{"product_id":"water-pump-impeller-repair-kit-fits-yamaha-40-60-hp-replaces-63d-w0078-00-00-63d-w0078-01-00","title":"Water Pump Impeller Repair Kit – Fits Yamaha 40-60 HP (Replaces 63D-W0078-00-00, 63D-W0078-01-00)","description":"\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n  table.ss-table th {\n    white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc;\n  }\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\u003csection\u003e\n  \u003ch2\u003eProduct Details\u003c\/h2\u003e\n  \u003cp\u003eThis \u003cstrong\u003eWater Pump Impeller Repair Kit – Fits Yamaha 40-60 HP (Replaces 63D-W0078-00-00, 63D-W0078-01-00)\u003c\/strong\u003e is designed for Yamaha 40 HP to 60 HP outboard motors (2-stroke and 4-stroke) manufactured from 1995 to the present. It contains all necessary components to restore your engine's cooling system to factory-fresh performance.\u003c\/p\u003e\n  \u003cp\u003eIt serves as a direct replacement for Yamaha OEM parts 63D-W0078-00-00 and 63D-W0078-01-00, as well as aftermarket references Sierra 18-3434, 18-3415, GHmarine 63DW0078, and GlückMarine 63DW0078.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eEngineered for direct-fit installation.\u003c\/li\u003e\n    \u003cli\u003eFeatures durable stainless steel housing components and a high-performance neoprene impeller.\u003c\/li\u003e\n    \u003cli\u003eIncludes a non-asbestos gasket for a reliable, long-lasting seal.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n  \u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket suppliers.\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n    \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eBrand\u003c\/th\u003e\n          \u003cth\u003ePart Number\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003e63D-W0078-00-00\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003e63D-W0078-01-00\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eSierra\u003c\/td\u003e\n          \u003ctd\u003e18-3434\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eSierra\u003c\/td\u003e\n          \u003ctd\u003e18-3415\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eGHmarine\u003c\/td\u003e\n          \u003ctd\u003e63DW0078\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eGlückMarine\u003c\/td\u003e\n          \u003ctd\u003e63DW0078\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n  \u003cp\u003eConfirm your engine model and year in the table below.\u003c\/p\u003e\n  \u003cp\u003eFitment for Yamaha outboards includes C-40, CV-40, F-50, F-60, P-40, P-50, T-50, and standard 40, 50, and 60 HP models.\u003c\/p\u003e\n  \u003cdiv class=\"ss-table-wrap\"\u003e\n    \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eBrand\u003c\/th\u003e\n          \u003cth\u003eModel\u003c\/th\u003e\n          \u003cth\u003eRated HP\u003c\/th\u003e\n          \u003cth\u003eStroke\u003c\/th\u003e\n          \u003cth\u003eYears\u003c\/th\u003e\n          \u003cth\u003eOEM Part No.\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003eC-40\u003c\/td\u003e\n          \u003ctd\u003e40\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1998 \u0026amp; Up\u003c\/td\u003e\n          \u003ctd\u003e63D-W0078-00-00\/63D-W0078-01-00\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003eCV-40\u003c\/td\u003e\n          \u003ctd\u003e40\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1998 \u0026amp; Up\u003c\/td\u003e\n          \u003ctd\u003e63D-W0078-00-00\/63D-W0078-01-00\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003e40\u003c\/td\u003e\n          \u003ctd\u003e40\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1995–2005\u003c\/td\u003e\n          \u003ctd\u003e63D-W0078-00-00\/63D-W0078-01-00\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003eP-40\u003c\/td\u003e\n          \u003ctd\u003e40\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1995–2005\u003c\/td\u003e\n          \u003ctd\u003e63D-W0078-00-00\/63D-W0078-01-00\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003eF-50\u003c\/td\u003e\n          \u003ctd\u003e50\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1995 \u0026amp; Up\u003c\/td\u003e\n          \u003ctd\u003e63D-W0078-00-00\/63D-W0078-01-00\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003e50\u003c\/td\u003e\n          \u003ctd\u003e50\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1995 \u0026amp; Up\u003c\/td\u003e\n          \u003ctd\u003e63D-W0078-00-00\/63D-W0078-01-00\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003eT-50\u003c\/td\u003e\n          \u003ctd\u003e50\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1996–1997\u003c\/td\u003e\n          \u003ctd\u003e63D-W0078-00-00\/63D-W0078-01-00\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003eP-50\u003c\/td\u003e\n          \u003ctd\u003e50\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1995–1996\u003c\/td\u003e\n          \u003ctd\u003e63D-W0078-00-00\/63D-W0078-01-00\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003eF-60\u003c\/td\u003e\n          \u003ctd\u003e60\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e2002 \u0026amp; Up\u003c\/td\u003e\n          \u003ctd\u003e63D-W0078-00-00\/63D-W0078-01-00\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n  \u003cdl\u003e\n    \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eWater Pump Impeller Repair Kit\u003c\/dd\u003e\n    \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement\u003c\/dd\u003e\n    \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eStainless steel components with neoprene impeller\u003c\/dd\u003e\n    \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eSilver\/black\u003c\/dd\u003e\n    \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e227g (8 oz)\u003c\/dd\u003e\n    \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eNon-asbestos gasket\u003c\/dd\u003e\n  \u003c\/dl\u003e\n\n  \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e1 x Neoprene Impeller (6H3-44352-00)\u003c\/li\u003e\n    \u003cli\u003e1 x Wear Plate (63D-44323-00)\u003c\/li\u003e\n    \u003cli\u003e1 x Insert Cup (63D-44322-00)\u003c\/li\u003e\n    \u003cli\u003e1 x Gasket (63D-44316-00)\u003c\/li\u003e\n    \u003cli\u003e1 x O-Ring (93210-59MG7)\u003c\/li\u003e\n    \u003cli\u003e1 x Woodruff Key (90280-03024)\u003c\/li\u003e\n    \u003cli\u003e1 x Cover, Water Pump Housing (63D-44312-00)\u003c\/li\u003e\n    \u003cli\u003e1 x Grommet (663-44366-00)\u003c\/li\u003e\n    \u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e4 x Installation bolt and washer (90119-08M15)\u003c\/span\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n  \u003col\u003e\n    \u003cli\u003eDisconnect the battery and shift the outboard into neutral.\u003c\/li\u003e\n    \u003cli\u003eRemove the lower unit (gearcase) by unbolting it from the engine's midsection. You may need to disconnect the speedometer tube and shift linkage.\u003c\/li\u003e\n    \u003cli\u003ePlace the lower unit on a workbench and remove the bolts securing the water pump housing cover.\u003c\/li\u003e\n    \u003cli\u003eSlide the housing up and off the driveshaft, exposing the impeller.\u003c\/li\u003e\n    \u003cli\u003eRemove the old impeller, Woodruff key, wear plate, insert cup, and gaskets. Clean all mating surfaces thoroughly.\u003c\/li\u003e\n    \u003cli\u003eInstall the new components from the kit in reverse order. Lightly grease the new impeller and insert cup interior.\u003c\/li\u003e\n    \u003cli\u003eEnsure the impeller blades are oriented correctly (in the direction of driveshaft rotation).\u003c\/li\u003e\n    \u003cli\u003eTorque the housing bolts to the manufacturer's specification.\u003c\/li\u003e\n    \u003cli\u003eReinstall the lower unit, ensuring all linkages are connected correctly.\u003c\/li\u003e\n    \u003cli\u003eStart the engine in a water-filled test tank or with a water flusher attached and confirm a steady stream of water from the tell-tale port.\u003c\/li\u003e\n  \u003c\/ol\u003e\n  \n  \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should I replace my water pump impeller?\u003c\/summary\u003e\n    \u003cp\u003eFor optimal reliability, we recommend replacing the impeller and gaskets every 100-200 operating hours or annually, whichever comes first. This interval can be shorter in saltwater or high-sediment environments.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat are the signs of a failing water pump?\u003c\/summary\u003e\n    \u003cp\u003eCommon symptoms include a weak or non-existent water stream from the \"tell-tale\" port, engine overheating alarms, and reduced engine performance. Visible damage to the old impeller, like cracked or missing blades, confirms failure.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eThe compatibility chart says \"1995 \u0026amp; Up.\" How do I confirm it fits my specific model year?\u003c\/summary\u003e\n    \u003cp\u003eThe \"and Up\" designation means this part fits all models produced from that year forward within that series. This kit is designed for the specified Yamaha 40-60 HP range from 1995 to the latest models, as the OEM part number has not changed for this assembly.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat is the difference between this full kit and just replacing the impeller?\u003c\/summary\u003e\n    \u003cp\u003eThis is a complete repair kit. Over time, the wear plate, insert cup, and housing can become scored or warped from heat and debris, reducing pumping efficiency even with a new impeller. Replacing all components at once ensures a proper seal and restores the pump to its original performance and longevity.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I reuse my old water pump housing or bolts?\u003c\/summary\u003e\n    \u003cp\u003eWhile you can sometimes reuse the main housing cover if it is not corroded or warped, this kit includes essential wear items like the insert cup and wear plate. We strongly recommend using the new bolts and washers supplied, as old bolts can stretch or corrode, leading to improper torque and potential leaks.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n    \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n    \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n    \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eVerify images and specifications against your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n    \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n    \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723972645179,"sku":"XR-63DW0078","price":21.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/XR-63DW0078.png?v=1763038869","url":"https:\/\/seasierra.com\/products\/water-pump-impeller-repair-kit-fits-yamaha-40-60-hp-replaces-63d-w0078-00-00-63d-w0078-01-00","provider":"SeaSierra","version":"1.0","type":"link"}