{"product_id":"water-pump-repair-kit-fits-yamaha-f40-f70-4-stroke-outboards-replaces-6cj-w0078-00-00-6cj-w0078-01-00","title":"Water Pump Repair Kit – Fits Yamaha F40\/F70 4-Stroke Outboards (Replaces 6CJ-W0078-00-00, 6CJ-W0078-01-00)","description":"\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\u003csection\u003e\n  \u003ch2\u003eProduct Details\u003c\/h2\u003e\n  \u003cp\u003eThis is a complete \u003cstrong\u003eWater Pump Repair Kit – Fits Yamaha F40\/F70 4-Stroke Outboards (Replaces 6CJ-W0078-00-00, 6CJ-W0078-01-00)\u003c\/strong\u003e. It is designed for Yamaha 4-Stroke models from 40 to 70 HP (2011–2016), including F40GET and F70A\/AET series outboards, providing all necessary components for a full service.\u003c\/p\u003e\n  \u003cp\u003eThis kit serves as a direct replacement for Yamaha 6CJ-W0078-00-00 and 6CJ-W0078-01-00, Sierra 18-3494, and Quicksilver 8M6012800 (F70 application only).\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInstallation Location:\u003c\/strong\u003e Mounts in the lower unit gearcase.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eService Scope:\u003c\/strong\u003e Includes all essential gaskets, seals, and the impeller for a complete water pump rebuild.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eQuality:\u003c\/strong\u003e Built with OEM-quality materials for reliable performance.\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\u003e6CJ-W0078-00-00\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e6CJ-W0078-01-00\u003c\/td\u003e\n        \u003ctd\u003eSupersedes 6CJ-W0078-00-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-3494\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eQuicksilver\u003c\/td\u003e\n        \u003ctd\u003e8M6012800\u003c\/td\u003e\n        \u003ctd\u003eF70 Application\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, verify your model code (e.g., 62Y, 6D7) and production year range match the compatibility data 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\u003eF40GET\u003c\/td\u003e\n        \u003ctd\u003e40\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2011–2015\u003c\/td\u003e\n        \u003ctd\u003e6CJ-W0078-00-00\u003c\/td\u003e\n        \u003ctd\u003eModel code 62Y\u0026gt;62Y6\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF70A, AET\u003c\/td\u003e\n        \u003ctd\u003e70\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2011–2015\u003c\/td\u003e\n        \u003ctd\u003e6CJ-W0078-00-00\u003c\/td\u003e\n        \u003ctd\u003eModel code 6D71\u0026gt;6D79, 6D7A\u0026gt;6D7C\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF70LA\u003c\/td\u003e\n        \u003ctd\u003e70\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2011–2016\u003c\/td\u003e\n        \u003ctd\u003e6CJ-W0078-00-00\u003c\/td\u003e\n        \u003ctd\u003eAll F70LA variants (0112-0116, 0310, 0410, 0411)\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 Repair Kit\u003c\/dd\u003e\n    \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eLower Unit\u003c\/dd\u003e\n    \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eOEM quality replacement parts for complete water pump service\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 (63D-44322-00-00)\u003c\/li\u003e\n    \u003cli\u003e1 x Gasket, Water Pump (6CJ-44315-00-00)\u003c\/li\u003e\n    \u003cli\u003e1 x Cover, Pump Housing (63D-44312-00-00)\u003c\/li\u003e\n    \u003cli\u003e1 x Damper, Water Seal 2 (663-44366-00-00 \/ 663-44366-01-00)\u003c\/li\u003e\n    \u003cli\u003e1 x Impeller (6H3-44352-00-00 \/ 6H4-44352-02-00)\u003c\/li\u003e\n    \u003cli\u003e1 x Key, Woodruff (90280-03M03-00)\u003c\/li\u003e\n    \u003cli\u003e2 x Oil Seal (93101-23070-00)\u003c\/li\u003e\n    \u003cli\u003e1 x O-Ring (93210-46044-00 \/ 93210-59MG7-00)\u003c\/li\u003e\n    \u003cli\u003e1 x Gasket, Water Pump (6CJ-44316-00-00 \/ 63D-44316-00-00)\u003c\/li\u003e\n    \u003cli\u003e1 x Outer Plate, Cartridge (6CJ-44323-00-00 \/ 63D-44323-00-00)\u003c\/li\u003e\n    \u003cli\u003e1 x Gasket, Cartridge (6CJ-44324-00-00)\u003c\/li\u003e\n    \u003cli\u003e2 x Pin, Dowel (93604-10M03-00)\u003c\/li\u003e\n    \u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e2 x Bolt, With Washer (90119-08M33-00)\u003c\/span\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e2 x Bolt, With Washer (90119-08M14-00 \/ 90119-08M15-00)\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 engine into neutral.\u003c\/li\u003e\n    \u003cli\u003ePlace a drain pan under the lower unit and remove the gear lube drain screw to drain the oil.\u003c\/li\u003e\n    \u003cli\u003eRemove the bolts securing the lower unit to the midsection. Carefully separate the lower unit.\u003c\/li\u003e\n    \u003cli\u003eUnbolt and remove the old water pump housing assembly.\u003c\/li\u003e\n    \u003cli\u003eRemove the old impeller, key, gaskets, and seals, noting their orientation.\u003c\/li\u003e\n    \u003cli\u003eThoroughly clean the driveshaft and all mating surfaces of any old gasket material or corrosion.\u003c\/li\u003e\n    \u003cli\u003eInstall the new Woodruff key and slide the new impeller onto the driveshaft.\u003c\/li\u003e\n    \u003cli\u003eAssemble the new housing with the new gaskets, o-rings, and seals as provided in the kit.\u003c\/li\u003e\n    \u003cli\u003eCarefully guide the newly assembled water pump and lower unit back into place, ensuring the driveshaft and shift shaft align.\u003c\/li\u003e\n    \u003cli\u003eTighten all lower unit bolts to the manufacturer's specified torque.\u003c\/li\u003e\n    \u003cli\u003eRefill the lower unit with fresh gear lube until it emerges from the upper vent hole.\u003c\/li\u003e\n    \u003cli\u003eReconnect the battery, attach a water supply (\"muffs\"), and test run the engine to confirm proper water flow from the tell-tale outlet.\u003c\/li\u003e\n  \u003c\/ol\u003e\n\n  \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n  \u003cdetails\u003e\u003csummary\u003eDoes this kit fit my specific F70LA model?\u003c\/summary\u003e\u003cp\u003eThis kit is confirmed to fit all Yamaha F70LA variants manufactured between 2011 and 2016. To be certain, always cross-reference the OEM part number (6CJ-W0078-00-00) with your engine's service manual before ordering.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eMy old impeller is 6H3-44352-00-00. Will the 6H4-44352-02-00 in some kits work?\u003c\/summary\u003e\u003cp\u003eYes, both impeller part numbers are valid and interchangeable for this application. Manufacturers often supersede parts or have multiple valid numbers that can vary between production runs.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eWhat are the signs of a failing water pump?\u003c\/summary\u003e\u003cp\u003eCommon symptoms include a weak or intermittent water stream from the \"tell-tale\" cooling outlet, engine overheating alarms, or a noticeable drop in performance. A visual inspection that reveals a cracked, brittle, or deformed impeller also indicates an immediate need for replacement.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eHow often should I replace my water pump components?\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 200-300 hours of operation. Service intervals should be shorter for boats used frequently in saltwater or silty\/sandy conditions.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eIs this an OEM Yamaha part?\u003c\/summary\u003e\u003cp\u003eThis is an aftermarket replacement part, not an OEM component. It has been engineered to meet or exceed original equipment manufacturer (OEM) specifications using comparable materials. Our parts are made in an ISO 9002 certified facility and are batch-inspected to ensure quality and consistency.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eWhat are the shipping speed and cost?\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly, with typical transit times of 5–15 days for most regions. Standard shipping is free for all orders. Expedited shipping options and associated costs, where available, 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 marine use. Should an issue arise, 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 packaging. Refer to our full policy page or contact us 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 and specifications against your original part before installation. If anything appears different—even if your model is listed as compatible—do not install the part and contact us for confirmation.\u003c\/li\u003e\n    \u003cli\u003eThis is an aftermarket replacement component, not an Original Equipment Manufacturer (OEM) part.\u003c\/li\u003e\n    \u003cli\u003eProfessional installation is highly recommended to ensure safety, proper function, and optimal 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 rigorously tested for real-world reliability and longevity.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — We offer free standard delivery to most regions worldwide, with typical delivery in 5–15 days.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — By working directly with our manufacturing partners, we provide fair pricing without compromising on materials or quality control.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723975266619,"sku":"23KY085","price":21.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/23KY0851_6841e1fb-c0bd-4fec-a457-63db649c39d7.jpg?v=1763038997","url":"https:\/\/seasierra.com\/products\/water-pump-repair-kit-fits-yamaha-f40-f70-4-stroke-outboards-replaces-6cj-w0078-00-00-6cj-w0078-01-00","provider":"SeaSierra","version":"1.0","type":"link"}