{"product_id":"water-pump-impeller-kit-fits-yamaha-f75-f100-replaces-61a-w0078-a3-00-61a-w0078-a2-00-61a-w0078-a4-00","title":"Water Pump Impeller Kit – Fits Yamaha F75-F100 (Replaces 61A-W0078-A3-00, 61A-W0078-A2-00, 61A-W0078-A4-00)","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 aftermarket \u003cstrong\u003eWater Pump Impeller Kit\u003c\/strong\u003e is engineered for Yamaha F75, F80, F90, and F100 4-stroke outboard engines manufactured between 1999 and 2013. It provides a reliable, direct-fit solution for maintaining your engine's cooling system and preventing overheating.\u003c\/p\u003e\n\u003cp\u003eThis kit serves as a direct cross-reference for Yamaha part numbers 61A-W0078-A3-00, 61A-W0078-A2-00, and 61A-W0078-A4-00, as well as aftermarket equivalents like Sierra 18-3396-1 and Mallory 9-48618.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDirect OEM-style bolt-on assembly for straightforward installation.\u003c\/li\u003e\n\u003cli\u003eIncludes a tough neoprene marine rubber impeller for durability and performance.\u003c\/li\u003e\n\u003cli\u003eComes as a complete rebuild kit including the housing, gaskets, and hardware.\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\u003e61A-W0078-A3-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e61A-W0078-A2-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e61A-W0078-A4-00\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3396-1\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMallory\u003c\/td\u003e\n\u003ctd\u003e9-48618\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\u003eThis kit is designed for the following Yamaha 4-stroke outboard 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        \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\u003eF75\u003c\/td\u003e\n        \u003ctd\u003e75\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1999–2003\u003c\/td\u003e\n        \u003ctd\u003e61A-W0078-A3-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF80A, F80AET, F80TLR, F80TJR\u003c\/td\u003e\n        \u003ctd\u003e80\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1999–2003\u003c\/td\u003e\n        \u003ctd\u003e61A-W0078-A3-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF80B, F80BET\u003c\/td\u003e\n        \u003ctd\u003e80\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2005–2015\u003c\/td\u003e\n        \u003ctd\u003e61A-W0078-A3-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF90\u003c\/td\u003e\n        \u003ctd\u003e90\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2003–2011\u003c\/td\u003e\n        \u003ctd\u003e61A-W0078-A3-00\u003c\/td\u003e\n        \u003ctd\u003e68V, 68V0, 68W0 series\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF100A, F100AET, F100TLR, F100TRZ\u003c\/td\u003e\n        \u003ctd\u003e100\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1999–2006\u003c\/td\u003e\n        \u003ctd\u003e61A-W0078-A3-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF100DET\u003c\/td\u003e\n        \u003ctd\u003e100\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2005–2015\u003c\/td\u003e\n        \u003ctd\u003e61A-W0078-A3-00\u003c\/td\u003e\n        \u003ctd\u003e68V, 68V0, 68W0 series\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 Kit\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect OEM replacement\u003c\/dd\u003e\n  \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eBolt-on assembly\u003c\/dd\u003e\n  \u003cdt\u003eKit Contents\u003c\/dt\u003e\n\u003cdd\u003eComplete rebuild kit with housing\u003c\/dd\u003e\n  \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003ePlastic\/Nylon PA66\u003c\/dd\u003e\n  \u003cdt\u003eImpeller Material\u003c\/dt\u003e\n\u003cdd\u003eNeoprene Marine Rubber\u003c\/dd\u003e\n  \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e454g (16 oz)\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 (61A-44322-02-00)\u003c\/li\u003e\n  \u003cli\u003e1 x O-Ring (93210-86M38-00)\u003c\/li\u003e\n  \u003cli\u003e1 x O-Ring (93210-37M67-00)\u003c\/li\u003e\n  \u003cli\u003e1 x Impeller (6E5-44352-01-00)\u003c\/li\u003e\n  \u003cli\u003e1 x Cartridge Outer Plate (6G5-44323-01-00)\u003c\/li\u003e\n  \u003cli\u003e1 x Water Pump Gasket (6E5-44315-A0-00)\u003c\/li\u003e\n  \u003cli\u003e2 x Dowel Pins (93606-12019-00)\u003c\/li\u003e\n  \u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e4 x Bolts, With Washer (90119-08M14-00)\u003c\/span\u003e\u003c\/li\u003e\n  \u003cli\u003e1 x Woodruff Key (90280-04M05-00)\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 for safety.\u003c\/li\u003e\n  \u003cli\u003ePlace the outboard in neutral and remove the lower unit (gearcase) from the midsection.\u003c\/li\u003e\n  \u003cli\u003eUnbolt and carefully detach the old water pump housing assembly from the driveshaft.\u003c\/li\u003e\n  \u003cli\u003eThoroughly clean all mating surfaces, ensuring no old gasket material or debris remains.\u003c\/li\u003e\n  \u003cli\u003eAssemble the new components from the kit. Lightly lubricate the impeller and inside of the housing with marine grease before inserting the impeller, turning the driveshaft in the direction of engine rotation.\u003c\/li\u003e\n  \u003cli\u003eInstall the new water pump assembly, ensuring the Woodruff key is properly seated. Tighten the bolts to the manufacturer's recommended torque specifications in a crisscross pattern.\u003c\/li\u003e\n  \u003cli\u003eReinstall the lower unit, reconnect all linkages, and secure it. Reconnect the battery and test engine operation with a proper water supply, confirming a strong tell-tale stream.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I know if this kit fits my specific Yamaha engine?\u003c\/summary\u003e\n  \u003cp\u003eThe surest way is to check your engine's model and year against our compatibility table. Pay close attention to any model series notes (e.g., 68V, 68W0). When in doubt, compare the part numbers stamped on your old components with those listed in our Part Number Matrix.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are the signs of a failing water pump impeller?\u003c\/summary\u003e\n  \u003cp\u003eCommon symptoms include a weak or non-existent water stream from the \"tell-tale\" outlet, engine overheating alarms, steam from the exhaust, or a noticeable drop in engine performance as the ECU reduces power to prevent damage.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow often should a water pump impeller be replaced?\u003c\/summary\u003e\n  \u003cp\u003eAs a preventative maintenance item, we recommend replacement every 1 to 2 years or every 100-200 hours of operation. Service intervals should be shorter if you frequently operate in sandy, silty, or saltwater conditions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs this kit difficult to install myself?\u003c\/summary\u003e\n  \u003cp\u003eInstallation is manageable for those with mechanical experience and the right tools. However, it involves removing the lower unit, which can be heavy and requires careful re-alignment. If you are not comfortable with this process, professional installation is recommended.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs grease required for installation?\u003c\/summary\u003e\n  \u003cp\u003eYes. A light coat of marine-grade grease or a soap-and-water solution on the impeller and inside the pump housing will ease installation and prevent damage to the impeller during the first dry start.\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\/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":50723982541115,"sku":"23KY721","price":95.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Water_Pump_Impeller_Kit_for_Yamaha_F75_to_F100_61A-W0078-A3_-_JLM_MARINE-8289402.jpg?v=1763039319","url":"https:\/\/seasierra.com\/products\/water-pump-impeller-kit-fits-yamaha-f75-f100-replaces-61a-w0078-a3-00-61a-w0078-a2-00-61a-w0078-a4-00","provider":"SeaSierra","version":"1.0","type":"link"}