{"title":"Excavator Hydraulic Pump Couplings","description":"\u003cp\u003eThe pump coupling connects the engine flywheel to the hydraulic pump. It is a wear part: the rubber element perishes, or the spline strips. The classic symptom is a clunk when you shut the engine down, followed by weak or lost hydraulics.\u003c\/p\u003e\u003cp\u003eWe list couplings by size and by spline count, because the same machine can take more than one. If you are replacing a coupling, count the splines on the old part before you order; a 13-spline coupling will not fit an 11-spline shaft.\u003c\/p\u003e\n\u003c!--sf-links--\u003e\n\u003cp\u003e\u003cstrong\u003eShop by machine:\u003c\/strong\u003e \u003ca href=\"\/collections\/sh60-parts\"\u003eKobelco SH60 Parts\u003c\/a\u003e\u003c\/p\u003e","products":[{"product_id":"coupling-4a","title":"Coupling 4A","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 4A. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 4A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409781157971,"sku":"4A","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image1.jpeg?v=1775450344"},{"product_id":"coupling-4as","title":"Coupling 4AS","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 4AS. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 4AS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409781485651,"sku":"4AS","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image2_2fce75b2-921a-4a22-a566-d960a715c3e5.jpeg?v=1775450371"},{"product_id":"coupling-8a","title":"Coupling 8A","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 8A. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 8A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409783877715,"sku":"8A","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image3_f2497557-deba-4651-8f56-923da92d1332.jpeg?v=1775450378"},{"product_id":"coupling-8as","title":"Coupling 8AS","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 8AS. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 8AS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409784205395,"sku":"8AS","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image4_dac4beec-fba1-45b9-a9ed-52b162dc6c04.jpeg?v=1775450392"},{"product_id":"coupling-10a","title":"Coupling 10A","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 10A. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 10A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409784926291,"sku":"10A","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image5.jpeg?v=1775450407"},{"product_id":"coupling-10as","title":"Coupling 10AS","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 10AS. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 10AS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409785548883,"sku":"10AS","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image6_41e109fb-b3fa-44c8-b924-de9a5b54cd7b.jpeg?v=1775450414"},{"product_id":"coupling-16a","title":"Coupling 16A","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 16A. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 16A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409785909331,"sku":"16A","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image7.jpeg?v=1775450423"},{"product_id":"coupling-16as","title":"Coupling 16AS","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 16AS. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 16AS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409786302547,"sku":"16AS","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image8_2951c81c-b1dc-444a-963c-a46daaf227c4.jpeg?v=1775450431"},{"product_id":"coupling-22a","title":"Coupling 22A","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 22A. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 22A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409786761299,"sku":"22A","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image9.jpeg?v=1775450439"},{"product_id":"coupling-22as","title":"Coupling 22AS","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 22AS. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 22AS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409787088979,"sku":"22AS","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image10_8cf62396-35e0-4460-a115-8aa860b9bcc7.jpeg?v=1775450446"},{"product_id":"coupling-25a","title":"Coupling 25A","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 25A. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 25A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409788203091,"sku":"25A","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image11.jpeg?v=1775450470"},{"product_id":"coupling-25as","title":"Coupling 25AS","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 25AS. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 25AS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409788432467,"sku":"25AS","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image12_ad30e486-b6fe-4bc9-bf92-933896afc426.jpeg?v=1775450485"},{"product_id":"coupling-28a","title":"Coupling 28A","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 28A. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 28A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409789055059,"sku":"28A","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image13.jpeg?v=1775450494"},{"product_id":"coupling-28as","title":"Coupling 28AS","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 28AS. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 28AS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409789382739,"sku":"28AS","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image14_7baf8adb-5b4d-4bbb-87b3-5cf2774bc63a.jpeg?v=1775450502"},{"product_id":"coupling-4a-1","title":"Coupling 4A","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 4A. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 4A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409789513811,"sku":"4A","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image1_377350c7-e0ce-4282-aac1-4767d0785105.jpeg?v=1775450504"},{"product_id":"coupling-30a","title":"Coupling 30A","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 30A. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 30A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409789677651,"sku":"30A","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image15.jpeg?v=1775450510"},{"product_id":"coupling-4as-1","title":"Coupling 4AS","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 4AS. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 4AS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409789907027,"sku":"4AS","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image2_bed9868d-c28a-4079-8a0e-ffd4b8a3e05a.jpeg?v=1775450514"},{"product_id":"coupling-30as","title":"Coupling 30AS","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 30AS. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 30AS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409790103635,"sku":"30AS","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image16_0683fac6-cadd-46e9-b211-58f1f6e2f4ad.jpeg?v=1775450518"},{"product_id":"coupling-8a-1","title":"Coupling 8A","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 8A. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 8A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409790333011,"sku":"8A","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image3_6cfbadb4-6275-449a-9e50-203831893ee8.jpeg?v=1775450521"},{"product_id":"coupling-50a","title":"Coupling 50A","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 50A. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 50A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409790464083,"sku":"50A","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image17.jpeg?v=1775450526"},{"product_id":"coupling-8as-1","title":"Coupling 8AS","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 8AS. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 8AS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409790595155,"sku":"8AS","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image4_db2bbffc-988f-4fff-be4d-3607fba745cd.jpeg?v=1775450529"},{"product_id":"coupling-50as","title":"Coupling 50AS","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 50AS. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 50AS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409790857299,"sku":"50AS","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image18_dc5e9491-dd56-4d78-80e8-ce73a5fdcfe4.jpeg?v=1775450535"},{"product_id":"coupling-10a-1","title":"Coupling 10A","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 10A. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 10A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409790988371,"sku":"10A","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image5_7cacc6fc-ae5a-4f22-9ffe-2df9669361cc.jpeg?v=1775450537"},{"product_id":"coupling-80a","title":"Coupling 80A","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 80A. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 80A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409791250515,"sku":"80A","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image19.jpeg?v=1775450539"},{"product_id":"coupling-10as-1","title":"Coupling 10AS","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 10AS. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 10AS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409791348819,"sku":"10AS","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image6_93a87f61-d53a-4c87-9d88-890680dff11c.jpeg?v=1775450552"},{"product_id":"coupling-80as","title":"Coupling 80AS","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 80AS. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 80AS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409791742035,"sku":"80AS","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image20_545cc221-d18d-4210-a6d3-8ec260566249.jpeg?v=1775450551"},{"product_id":"coupling-16a-1","title":"Coupling 16A","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 16A. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 16A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409792036947,"sku":"16A","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image7_7e9cf742-0c32-4a01-a542-e084283c2e9d.jpeg?v=1775450561"},{"product_id":"coupling-16as-1","title":"Coupling 16AS","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 16AS. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 16AS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409792561235,"sku":"16AS","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image8_ed7f4ed9-f997-42d7-885d-d52e832ee6b2.jpeg?v=1775450575"},{"product_id":"coupling-90a","title":"Coupling 90A","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 90A. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 90A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409793052755,"sku":"90A","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image21.png?v=1775450579"},{"product_id":"coupling-22a-1","title":"Coupling 22A","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 22A. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 22A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409793183827,"sku":"22A","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image9_fe36c039-6ba7-44f9-921f-3415754544c1.jpeg?v=1775450595"},{"product_id":"coupling-90as","title":"Coupling 90AS","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 90AS. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 90AS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409793445971,"sku":"90AS","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image22.png?v=1775450586"},{"product_id":"coupling-140a","title":"Coupling 140A","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 140A. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 140A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409793773651,"sku":"140A","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image23.png?v=1775450592"},{"product_id":"coupling-4a-2","title":"Coupling 4A","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 4A. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 4A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409793806419,"sku":"4A","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image1_f45ab931-f481-4cf1-9eed-97e0ccd666f6.jpeg?v=1775450594"},{"product_id":"coupling-140as","title":"Coupling 140AS","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 140AS. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 140AS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409794166867,"sku":"140AS","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image24.png?v=1775450598"},{"product_id":"coupling-22as-1","title":"Coupling 22AS","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 22AS. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 22AS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409794363475,"sku":"22AS","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image10_105d5d94-b4d2-491f-908e-4df3762ca3b6.jpeg?v=1775450605"},{"product_id":"coupling-4as-2","title":"Coupling 4AS","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 4AS. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 4AS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409794592851,"sku":"4AS","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image2_b6c94a77-4148-4128-9372-0dff5e4019ef.jpeg?v=1775450604"},{"product_id":"coupling-200a","title":"Coupling 200A","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 200A. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 200A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409794691155,"sku":"200A","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image25.png?v=1775450603"},{"product_id":"coupling-200as","title":"Coupling 200AS","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 200AS. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 200AS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409794920531,"sku":"200AS","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image26.png?v=1775450608"},{"product_id":"coupling-8a-2","title":"Coupling 8A","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 8A. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 8A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409795117139,"sku":"8A","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image3_b5d8c28e-622d-44c6-a6a7-50a44054ea10.jpeg?v=1775450615"},{"product_id":"coupling-250a","title":"Coupling 250A","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 250A. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 250A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409795248211,"sku":"250A","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image27.png?v=1775450613"},{"product_id":"coupling-250as","title":"Coupling 250AS","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 250AS. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 250AS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409795510355,"sku":"250AS","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image28.png?v=1775450618"},{"product_id":"coupling-8as-2","title":"Coupling 8AS","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 8AS. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 8AS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409795838035,"sku":"8AS","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image4_fe04d52e-433d-4059-8028-0c86c86e50df.jpeg?v=1775450630"},{"product_id":"coupling-16h","title":"Coupling 16H","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 16H. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 16H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409795903571,"sku":"16H","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image29.jpeg?v=1775450625"},{"product_id":"coupling-25a-1","title":"Coupling 25A","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 25A. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 25A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409796165715,"sku":"25A","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image11_2ac098ce-26a4-4418-9258-6cda9f33d510.jpeg?v=1775450629"},{"product_id":"coupling-assy-16h","title":"Coupling Assy 16H","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 16H. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 16H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409796264019,"sku":"16H","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image30_86dc3953-ba66-4343-bc1b-b2d825762812.jpeg?v=1775450633"},{"product_id":"coupling-25as-1","title":"Coupling 25AS","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 25AS. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 25AS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409796395091,"sku":"25AS","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image12_45e47da9-d3f7-4b95-8ea0-bb56bbcc5691.jpeg?v=1775450637"},{"product_id":"coupling-10a-2","title":"Coupling 10A","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 10A. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 10A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409796460627,"sku":"10A","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image5_2b071320-c749-49a5-8c58-318f9fad61a1.jpeg?v=1775450639"},{"product_id":"coupling-28a-1","title":"Coupling 28A","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 28A. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 28A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409796821075,"sku":"28A","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image13_625022ef-36c8-4406-a88e-05c4fb611191.jpeg?v=1775450645"},{"product_id":"coupling-10as-2","title":"Coupling 10AS","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 10AS. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 10AS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409797017683,"sku":"10AS","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image6_d9c16802-935a-4d8f-9bbb-f903b37723f8.jpeg?v=1775450651"},{"product_id":"coupling-28as-1","title":"Coupling 28AS","description":"\u003cp\u003eHydraulic pump coupling element for excavators, size 28AS. The rubber element connects the engine flywheel to the hydraulic pump and takes up the misalignment between them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 28AS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e aftermarket replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe symptom you probably have\u003c\/h3\u003e\u003cp\u003eA clunk when you shut the engine down is the classic sign that the coupling element has gone. After that you lose hydraulic power, or the pump stops driving altogether. Worn couplings also show up as vibration through the machine before they fail completely.\u003c\/p\u003e\n\u003ch3\u003eCheck the spline count\u003c\/h3\u003e\u003cp\u003eTwo couplings that look the same from the outside can take a different spline count, and one will not fit the other's shaft. Count the teeth on the old coupling, or send us a photo, and we will match it. Coupling sizes are not interchangeable between machine classes.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/excavator-pump-couplings\"\u003eExcavator Hydraulic Pump Couplings\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAftermarket replacement part.\u003c\/small\u003e\u003c\/p\u003e","brand":"Auto Parts","offers":[{"title":"Default Title","offer_id":44409797214291,"sku":"28AS","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/0815\/3939\/files\/image14_4c02bd12-6dd0-4c39-84f9-ed4ea5cf6dee.jpeg?v=1775450652"}],"url":"https:\/\/sfma.cn\/collections\/excavator-pump-couplings.oembed","provider":"ShengFeng","version":"1.0","type":"link"}