{"product_id":"water-pump-impeller-kit-fits-yamaha-40-50-60hp-2-stroke-4-stroke-replaces-63d-w0078-01-00","title":"Water Pump Impeller Kit – Fits Yamaha 40\/50\/60HP 2-Stroke \u0026 4-Stroke (Replaces 63D-W0078-01-00)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\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\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\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\n  \u003ch2\u003eProduct Details\u003c\/h2\u003e\n  \u003cp\u003eThis \u003cstrong\u003eWater Pump Impeller Kit – Fits Yamaha 40\/50\/60HP 2-Stroke \u0026amp; 4-Stroke (Replaces 63D-W0078-01-00)\u003c\/strong\u003e includes all necessary components to restore your engine’s cooling system. It is designed for Yamaha outboard engines, fitting both 2-stroke models (40HP, 50HP from 1994–2005) and 4-stroke models (F40, F50, F60 from 1996 and newer).\u003c\/p\u003e\n  \u003cp\u003eThis kit serves as a direct cross-reference for Yamaha part numbers 63D-W0078-01-00, 63D-W0078-03-00, 63D-W0078-02-00, and 63D-W0078-00-00, along with Sierra equivalents 18-3415 and 18-3434.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eDesigned for direct-fit installation with no modifications needed.\u003c\/li\u003e\n    \u003cli\u003eIncludes housing, impeller, gaskets, and hardware for a complete overhaul.\u003c\/li\u003e\n    \u003cli\u003eEngineered for reliable performance in demanding marine conditions.\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.\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-W0078-01-00\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003e63D-W0078-03-00\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003e63D-W0078-02-00\u003c\/td\u003e\n        \u003c\/tr\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\u003eSierra\u003c\/td\u003e\n          \u003ctd\u003e18-3415\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      \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\/year in the table below.\u003c\/p\u003e\n  \u003cp\u003eFor Yamaha owners, please verify your specific model code (e.g., F50TLR) and manufacturing year against the compatible models listed.\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          \u003cth\u003eNotes\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\u003e40\/50\u003c\/td\u003e\n          \u003ctd\u003e40-50\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1994–2005\u003c\/td\u003e\n          \u003ctd\u003e63D-W0078-01-00\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003eF40A, AE, AEL, AMH\u003c\/td\u003e\n          \u003ctd\u003e40\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1999–2002\u003c\/td\u003e\n          \u003ctd\u003e63D-W0078-01-00\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003eF40B\u003c\/td\u003e\n          \u003ctd\u003e40\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e2006–2015\u003c\/td\u003e\n          \u003ctd\u003e63D-W0078-01-00\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003eF40CET\u003c\/td\u003e\n          \u003ctd\u003e40\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e2002\u003c\/td\u003e\n          \u003ctd\u003e63D-W0078-01-00\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003eF40D, DE, HE\u003c\/td\u003e\n          \u003ctd\u003e40\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e2006–2015\u003c\/td\u003e\n          \u003ctd\u003e63D-W0078-01-00\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003eF50A, AE, TJR\u003c\/td\u003e\n          \u003ctd\u003e50\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1997–2007\u003c\/td\u003e\n          \u003ctd\u003e63D-W0078-01-00\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003eF50DETL\u003c\/td\u003e\n          \u003ctd\u003e50\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e1995–2010\u003c\/td\u003e\n          \u003ctd\u003e63D-W0078-01-00\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003eF50F, FE, TR, TL\u003c\/td\u003e\n          \u003ctd\u003e50\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e2005–2012\u003c\/td\u003e\n          \u003ctd\u003e63D-W0078-01-00\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003eF50HED\u003c\/td\u003e\n          \u003ctd\u003e50\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e2013–2015\u003c\/td\u003e\n          \u003ctd\u003e63D-W0078-01-00\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003eF60A, AE, TL, TJR\u003c\/td\u003e\n          \u003ctd\u003e60\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e2002–2012\u003c\/td\u003e\n          \u003ctd\u003e63D-W0078-01-00\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eYamaha\u003c\/td\u003e\n          \u003ctd\u003eF60B, FET\u003c\/td\u003e\n          \u003ctd\u003e60\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e2013–2015\u003c\/td\u003e\n          \u003ctd\u003e63D-W0078-01-00\u003c\/td\u003e\n          \u003ctd\u003e\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\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eIncludes housing and all necessary components for complete water pump rebuild\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 Cartridge Insert (63D-44322-00-00)\u003c\/li\u003e\n    \u003cli\u003e1 x Impeller (6H3-44352-00-00)\u003c\/li\u003e\n    \u003cli\u003e1 x Water Pump Housing Cover (63D-44312-00-00)\u003c\/li\u003e\n    \u003cli\u003e1 x Cartridge Outer Plate (63D-44323-00-00)\u003c\/li\u003e\n    \u003cli\u003e1 x O-Ring (93210-59MG7-00)\u003c\/li\u003e\n    \u003cli\u003e1 x Water Pump Gasket (63D-44316-00-00)\u003c\/li\u003e\n    \u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e4 x Bolts With Washers (90119-08M15-00)\u003c\/span\u003e\u003c\/li\u003e\n    \u003cli\u003e1 x Water Seal Damper 2 (663-44366-00-00)\u003c\/li\u003e\n    \u003cli\u003e1 x Woodruff Key (90280-03024-00)\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n  \u003col\u003e\n    \u003cli\u003eDisconnect the battery and remove the engine cover.\u003c\/li\u003e\n    \u003cli\u003eDrain the gearcase oil from the lower unit.\u003c\/li\u003e\n    \u003cli\u003eRemove the bolts securing the lower unit and detach it from the engine.\u003c\/li\u003e\n    \u003cli\u003eUnbolt and remove the old water pump housing assembly.\u003c\/li\u003e\n    \u003cli\u003eCarefully note the orientation of all old parts before removal.\u003c\/li\u003e\n    \u003cli\u003eClean the mounting surfaces, ensuring they are free of old gasket material and corrosion.\u003c\/li\u003e\n    \u003cli\u003eInstall the new impeller, key, gaskets, and plates as provided in the kit. Lubricate the new impeller lightly.\u003c\/li\u003e\n    \u003cli\u003eAssemble and install the new water pump housing, ensuring all bolts are torqued to manufacturer specifications.\u003c\/li\u003e\n    \u003cli\u003eReinstall the lower unit, refill the gearcase oil, and reconnect the battery.\u003c\/li\u003e\n    \u003cli\u003eStart the engine and verify water is exiting the tell-tale port, confirming correct pump operation.\u003c\/li\u003e\n  \u003c\/ol\u003e\n\n  \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n  \u003cdetails\u003e\u003csummary\u003eHow do I know if my water pump impeller is failing?\u003c\/summary\u003e\u003cp\u003eCommon signs include a weak or non-existent water stream from the tell-tale (peephole), engine overheating alarms, or a noticeable decrease in engine performance. A visual inspection of the impeller may reveal cracked, brittle, or missing vanes.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eHow often should the water pump kit be replaced?\u003c\/summary\u003e\u003cp\u003eFor preventative maintenance, it is recommended to inspect the impeller annually and replace the entire water pump kit every 2-3 years or every 200-300 hours of use, whichever comes first. This interval may be shorter in saltwater or high-sediment environments.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eWill this fit my specific Yamaha F50TLR model from 2006?\u003c\/summary\u003e\u003cp\u003eYes, based on the compatibility chart, the F50TL model is covered from 2005 to 2012. You can confirm by matching your engine's OEM part number requirement to 63D-W0078-01-00.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eWhat is the purpose of the Woodruff key?\u003c\/summary\u003e\u003cp\u003eThe Woodruff key is a small, semi-circular piece of metal that locks the impeller to the driveshaft, ensuring they rotate together. It is critical for the pump to function; do not reuse the old key.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eIs this an OEM Yamaha part?\u003c\/summary\u003e\u003cp\u003eThis listing is for a high-quality aftermarket replacement, not an original equipment manufacturer (OEM) part. It is built to meet or exceed OEM-level specifications using comparable materials and manufactured in an ISO 9002 certified facility with rigorous batch inspections.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eWhat are your shipping speeds and costs?\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly, with typical transit times of 5–15 days for most regions. Standard shipping is free. If available for your location, expedited shipping options and costs will be presented at checkout.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\u003cp\u003eThis product is covered by a 1-year warranty against manufacturing defects under normal use conditions. If you encounter an issue, please contact our support team with your order details. Returns are accepted within our standard window for items that are unused and in their original condition. See our policy page or reach out for instructions.\u003c\/p\u003e\u003c\/details\u003e\n\n  \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eVerify images\/specifications vs 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":50723974185275,"sku":"17KY011","price":27.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/17KY0111_6c1a8f88-f792-44e1-9e06-93c9d33949c1.jpg?v=1763038947","url":"https:\/\/seasierra.com\/products\/water-pump-impeller-kit-fits-yamaha-40-50-60hp-2-stroke-4-stroke-replaces-63d-w0078-01-00","provider":"SeaSierra","version":"1.0","type":"link"}