{"product_id":"water-pump-repair-kit-fits-mercury-mariner-2-hp-replaces-46-6885m-46-80395m","title":"Water Pump Repair Kit – Fits Mercury\/Mariner 2 HP (Replaces 46-6885M, 46-80395M)","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 \u003cstrong\u003eWater Pump Repair Kit\u003c\/strong\u003e is designed for Mercury\/Mariner 2 HP 2-Stroke outboard engines manufactured between 1984 and 2002. It contains all the necessary seals, gaskets, and impeller components to restore your engine's cooling system for reliable performance.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct replacement for Mercury part numbers 46-6885M and 46-80395M, along with Sierra equivalents 18-3462 and 18-3463, and Yamaha 6A1-W0078-01-00.\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003eEngineered for a direct OEM-equivalent fit.\u003c\/li\u003e\n    \u003cli\u003eDesigned specifically for models with the small gear housing.\u003c\/li\u003e\n    \u003cli\u003eIncludes the essential impeller, wear plate, insert cup, and seals for a complete service.\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 Cross-Reference\"\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\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e46-6885M\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e46-80395M\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e80395M\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMercury\u003c\/td\u003e\n\u003ctd\u003e6885M\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3462\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3463\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e6A1-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\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eFor Mercury\/Mariner owners, this kit fits 2 HP models designated 2A and 2B from 1984–2002.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine and 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\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003e2A, 2B\u003c\/td\u003e\n        \u003ctd\u003e2\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1984–2002\u003c\/td\u003e\n        \u003ctd\u003e46-6885M, 46-80395M\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\u003eOEM Direct Replacement\u003c\/dd\u003e\n  \u003cdt\u003eFitting Type\u003c\/dt\u003e\n\u003cdd\u003eDirect Fit\u003c\/dd\u003e\n  \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eFor small gear housing\/lower unit\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 Water Pump Impeller (80395M)\u003c\/li\u003e\n    \u003cli\u003e1 x Cup, Insert (80393M)\u003c\/li\u003e\n    \u003cli\u003e1 x Wear Plate (80394M)\u003c\/li\u003e\n    \u003cli\u003e1 x Protector, Oil Seal (92529M)\u003c\/li\u003e\n    \u003cli\u003e1 x O-Ring (82269M)\u003c\/li\u003e\n    \u003cli\u003e1 x Seal, Water (80398M)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e2 x\u003c\/span\u003e Seal, Oil (82251M)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e2 x\u003c\/span\u003e Pin, Dowel (82356M)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e2 x\u003c\/span\u003e Bolt and Washer (92521M)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n    \u003cli\u003eDisconnect the battery and engine kill switch for safety.\u003c\/li\u003e\n    \u003cli\u003ePlace the outboard in neutral and remove the lower unit (gearcase) bolts.\u003c\/li\u003e\n    \u003cli\u003eCarefully separate the lower unit from the upper housing, minding the driveshaft and shift linkage.\u003c\/li\u003e\n    \u003cli\u003eUnbolt and remove the old water pump housing. Note the orientation of the old components.\u003c\/li\u003e\n    \u003cli\u003eRemove the old impeller, plate, cup, and seals. Clean all mating surfaces thoroughly.\u003c\/li\u003e\n    \u003cli\u003eInstall the new components from the kit in the reverse order of removal. Lubricate the new impeller and insert cup with marine grease for easier installation.\u003c\/li\u003e\n    \u003cli\u003eRotate the driveshaft clockwise while sliding the new impeller down to seat the vanes correctly.\u003c\/li\u003e\n    \u003cli\u003eReinstall the water pump assembly, torquing bolts to manufacturer specifications.\u003c\/li\u003e\n    \u003cli\u003eReattach the lower unit, ensuring the driveshaft and water tube align correctly.\u003c\/li\u003e\n    \u003cli\u003eOnce assembled, reconnect the battery and test the engine in water, confirming 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\u003csummary\u003eHow can I confirm this kit fits my Mercury 2HP engine?\u003c\/summary\u003e\u003cp\u003eThis kit is specifically for Mercury\/Mariner 2 HP 2-Stroke outboards (models 2A, 2B) from 1984 to 2002 using a small gear housing. Please check your engine's model and year against the compatibility table and verify your existing part numbers match the ones listed in the Part Number Matrix.\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 non-existent water stream from the \"tell-tale\" outlet, engine overheating alarms, or a noticeable decrease in engine performance. Inspecting the impeller during routine maintenance is the best preventative measure.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should the water pump impeller be replaced?\u003c\/summary\u003e\u003cp\u003eAs a general rule, it's recommended to inspect the impeller annually and replace it every 1-2 years or every 100-200 hours of use, whichever comes first. Usage in saltwater or sandy\/murky water may require more frequent replacement.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes this kit include a new water pump housing?\u003c\/summary\u003e\u003cp\u003eNo, this is a repair kit that includes the internal wear items: impeller, wear plate, insert cup, and all necessary seals and gaskets. The outer housing is not included. You should reuse your existing housing if it is not cracked or excessively worn.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the difference between OEM and aftermarket parts?\u003c\/summary\u003e\u003cp\u003eThis listing is for an aftermarket replacement component, not an original equipment manufacturer (OEM) part. It has been engineered to meet or exceed OEM-level specifications using comparable materials. Our parts are manufactured 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 your shipping speeds and costs?\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly, with a typical transit time of 5–15 days for most regions. Standard shipping is free. Expedited shipping options, if available for your location, 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 operating conditions. If you encounter an issue, please contact our support team with your order details. Returns are accepted within our standard return window for unused items in their original condition. See our official policy page or reach out for detailed 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. 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":50723790291259,"sku":"XR20KY007","price":32.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/XR20KY007.png?v=1763031854","url":"https:\/\/seasierra.com\/products\/water-pump-repair-kit-fits-mercury-mariner-2-hp-replaces-46-6885m-46-80395m","provider":"SeaSierra","version":"1.0","type":"link"}