{"product_id":"water-pump-repair-kit-fits-yamaha-25-30-hp-outboard-motors-replaces-61n-w0078-11-00-61n-w0078-14-00","title":"Water Pump Repair Kit – Fits Yamaha 25–30 HP Outboard Motors (Replaces 61N-W0078-11-00, 61N-W0078-14-00)","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 Repair Kit – Fits Yamaha 25–30 HP Outboard Motors\u003c\/strong\u003e contains the necessary components to service and restore your engine's cooling system. It is designed for Yamaha 2-Stroke 30 HP (1993–1997) and 4-Stroke 25 HP (1998–2018) outboard motors. Please note, this kit is not compatible with Yamaha F25C models.\u003c\/p\u003e\n\u003cp\u003eThis kit serves as a direct replacement for Yamaha OEM parts 61N-W0078-10-00, 61N-W0078-11-00, and 61N-W0078-14-00, as well as aftermarket references Sierra 18-3432 and YAMABOYA 61N-W0078-11.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstalls in the lower unit of the outboard motor.\u003c\/li\u003e\n\u003cli\u003eFeatures a durable Stainless Steel 316 housing cup and wear plate for corrosion resistance.\u003c\/li\u003e\n\u003cli\u003eProvides a complete solution for the replacement and repair of the outboard water pump assembly.\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        \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\u003e61N-W0078-10-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e61N-W0078-11-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e61N-W0078-14-00\u003c\/td\u003e\n        \u003ctd\u003eSupersedes 61N-W0078-11-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-3432\u003c\/td\u003e\n        \u003ctd\u003eAftermarket Interchange\u003c\/td\u003e\n      \u003c\/tr\u003e\n       \u003ctr\u003e\n        \u003ctd\u003eYAMABOYA\u003c\/td\u003e\n        \u003ctd\u003e61N-W0078-11\u003c\/td\u003e\n        \u003ctd\u003eAftermarket Interchange\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\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\u003eF25\u003c\/td\u003e\n        \u003ctd\u003e25\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1998–2005\u003c\/td\u003e\n        \u003ctd\u003e61N-W0078-11-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF25A\u003c\/td\u003e\n        \u003ctd\u003e25\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2009–2019\u003c\/td\u003e\n        \u003ctd\u003e61N-W0078-14-00\u003c\/td\u003e\n        \u003ctd\u003eSupersedes 61N-W0078-11-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF25B\u003c\/td\u003e\n        \u003ctd\u003e25\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2012–2018\u003c\/td\u003e\n        \u003ctd\u003e61N-W0078-14-00\u003c\/td\u003e\n        \u003ctd\u003eSupersedes 61N-W0078-11-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eC30\u003c\/td\u003e\n        \u003ctd\u003e30\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1993–1997\u003c\/td\u003e\n        \u003ctd\u003e61N-W0078-11-00\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\u003eLower Unit\u003c\/dd\u003e\n  \u003cdt\u003eFuel Type\u003c\/dt\u003e\n\u003cdd\u003eGasoline\u003c\/dd\u003e\n  \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eStainless Steel 316 (Cup and Wear Plate)\u003c\/dd\u003e\n  \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e0.24 kg (0.53 lb)\u003c\/dd\u003e\n  \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003e1 Year (Aftermarket)\u003c\/dd\u003e\n  \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eFor replacement\/repair of outboard water pump assembly\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 Insert, Cartridge (63V-44322-00-00)\u003c\/li\u003e\n  \u003cli\u003e1 x Impeller (63V-44352-01-00\/6H4-44352-00-00)\u003c\/li\u003e\n  \u003cli\u003e1 x Key, Woodruff (664-44338-00-00)\u003c\/li\u003e\n  \u003cli\u003e1 x O-Ring (93210-49046-00)\u003c\/li\u003e\n  \u003cli\u003e1 x Outer Plate, Cartridge (68T-44323-00-00)\u003c\/li\u003e\n  \u003cli\u003e2 x Pin, Dowel (93604-10M03-00)\u003c\/li\u003e\n  \u003cli\u003e4 x Bolt (97095-08045-00)\u003c\/li\u003e\n  \u003cli\u003e2 x Plate (63V-44328-01-00)\u003c\/li\u003e\n  \u003cli\u003e1 x Water Pump Cup\u003c\/li\u003e\n  \u003cli\u003e1 x Wear Plate\u003c\/li\u003e\n  \u003cli\u003e1 x Water Seal (6L2-44367-01-00)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the battery and shift the outboard into neutral.\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 to the upper casing and carefully lower it.\u003c\/li\u003e\n  \u003cli\u003eUnbolt and remove the existing water pump housing. Note the orientation of the old parts.\u003c\/li\u003e\n  \u003cli\u003eClean the mounting surfaces and remove any old gasket material.\u003c\/li\u003e\n  \u003cli\u003eInstall the new components from the kit, ensuring the impeller vanes are oriented correctly (typically clockwise).\u003c\/li\u003e\n  \u003cli\u003eLubricate the new impeller and internal housing with marine grease.\u003c\/li\u003e\n  \u003cli\u003eReassemble the water pump housing, ensuring all seals and gaskets are correctly seated. Torque bolts to manufacturer specifications.\u003c\/li\u003e\n  \u003cli\u003eReinstall the lower unit, reconnecting the shift shaft and drive shaft.\u003c\/li\u003e\n  \u003cli\u003eRefill the gearcase with fresh oil. Reconnect the battery and test the engine using a water supply (flushing muffs), confirming a strong water stream from the tell-tale.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes this kit fit all Yamaha F25 models?\u003c\/summary\u003e\u003cp\u003eThis kit fits most Yamaha F25 4-stroke models manufactured between 1998 and 2018 (F25, F25A, F25B). However, it is specifically **not compatible** with Yamaha F25C models. Always verify your full engine model and year before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs of a failing water pump?\u003c\/summary\u003e\u003cp\u003eCommon indicators of a failing water pump include a weak or absent water stream from the engine's tell-tale outlet, engine overheating alarms, or a noticeable drop in cooling performance. Upon inspection, a worn impeller may have cracked, brittle, or melted vanes.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should the water pump be serviced?\u003c\/summary\u003e\u003cp\u003eAs a crucial part of preventative maintenance, we recommend inspecting the impeller annually and replacing the entire water pump kit every 1-2 years or 100-200 hours of use. Service intervals should be shorter in saltwater or silty\/sandy water conditions.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat makes this kit different from the OEM version?\u003c\/summary\u003e\u003cp\u003eThis is a high-quality aftermarket kit built to meet or exceed OEM specifications. It provides a cost-effective solution using comparable materials, including a robust 316 stainless steel cup and wear plate, ensuring reliable performance and corrosion resistance.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\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\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eShipping speed \u0026amp; cost?\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWarranty \u0026amp; returns?\u003c\/summary\u003e\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\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":50723800351035,"sku":"8W-YRK4-48CT","price":24.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/8W-YRK4-48CT.png?v=1763032142","url":"https:\/\/seasierra.com\/products\/water-pump-repair-kit-fits-yamaha-25-30-hp-outboard-motors-replaces-61n-w0078-11-00-61n-w0078-14-00","provider":"SeaSierra","version":"1.0","type":"link"}