{"product_id":"water-pump-impeller-fits-yamaha-mercury-mariner-9-9-15-hp-replaces-682-44352-00-00-47-96619m","title":"Water Pump Impeller – Fits Yamaha, Mercury\/Mariner 9.9\/15 HP (Replaces 682-44352-00-00, 47-96619M)","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 with Key – Fits Yamaha 9.9\/15 HP 2\/4-Stroke Outboards (Replaces 682-44352-00-00)\u003c\/strong\u003e is designed for reliable performance in Yamaha 9.9\/15 HP 2-Stroke (1984–2008) and 9.9\/15 HP 4-Stroke (up to 2000) models. It also fits various Mercury and Mariner 9.9\/15 HP outboard motors as a direct replacement.\u003c\/p\u003e\n\u003cp\u003eThis part is a direct replacement for Yamaha 682-44352-00-00, 682-44352-01-00, and 682-44352-02-00; Sierra 18-3074; Mercury 47-96619M and 47-84027M; CEF 500320; and Mallory 9-45605.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEngineered for direct OEM replacement fit and function.\u003c\/li\u003e\n\u003cli\u003eConstructed from durable, high-performance neoprene for longevity.\u003c\/li\u003e\n\u003cli\u003eIncludes the drive key for a complete installation.\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 brands.\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\u003e682-44352-00-00\u003c\/td\u003e\n        \u003ctd\u003eSuperseded by 682-44352-01-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e682-44352-01-00\u003c\/td\u003e\n        \u003ctd\u003eSuperseded by 682-44352-02-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e682-44352-02-00\u003c\/td\u003e\n        \u003ctd\u003eCurrent OEM number\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-3074\u003c\/td\u003e\n        \u003ctd\u003eAftermarket cross-reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n        \u003ctd\u003e47-96619M\u003c\/td\u003e\n        \u003ctd\u003eOEM cross-reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury \/ Mariner\u003c\/td\u003e\n        \u003ctd\u003e47-84027M\u003c\/td\u003e\n        \u003ctd\u003eOEM cross-reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCEF Marine\u003c\/td\u003e\n        \u003ctd\u003e500320\u003c\/td\u003e\n        \u003ctd\u003eAftermarket cross-reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMallory\u003c\/td\u003e\n        \u003ctd\u003e9-45605\u003c\/td\u003e\n        \u003ctd\u003eAftermarket cross-reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n       \u003ctr\u003e\n        \u003ctd\u003eHeuroFosh\u003c\/td\u003e\n        \u003ctd\u003e18-3074\u003c\/td\u003e\n        \u003ctd\u003eAftermarket cross-reference\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 and year in the tables below for an accurate fit.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFor Yamaha outboards:\u003c\/b\u003e Fits 9.9D and 15D 2-Stroke models from 1984 to 2008, and F9.9\/F15 4-Stroke models up to the year 2000.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFor Mercury\/Mariner outboards:\u003c\/b\u003e Serves as a replacement for part numbers 47-96619M and 47-84027M on various 9.9 HP and 15 HP models. Due to wide variations, please verify compatibility with your specific model before ordering.\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\u003e9.9D\u003c\/td\u003e\n        \u003ctd\u003e9.9\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1984–2008\u003c\/td\u003e\n        \u003ctd\u003e682-44352-00-00\u003c\/td\u003e\n        \u003ctd\u003eLater superseded by 682-44352-01-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003e15D\u003c\/td\u003e\n        \u003ctd\u003e15\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1984–2008\u003c\/td\u003e\n        \u003ctd\u003e682-44352-00-00\u003c\/td\u003e\n        \u003ctd\u003eLater superseded by 682-44352-01-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF9.9\u003c\/td\u003e\n        \u003ctd\u003e9.9\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eUp to 2000\u003c\/td\u003e\n        \u003ctd\u003e682-44352-00-00\u003c\/td\u003e\n        \u003ctd\u003eOlder models only\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eYamaha\u003c\/td\u003e\n        \u003ctd\u003eF15\u003c\/td\u003e\n        \u003ctd\u003e15\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eUp to 2000\u003c\/td\u003e\n        \u003ctd\u003e682-44352-00-00\u003c\/td\u003e\n        \u003ctd\u003eOlder models only\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003e9.9\u003c\/td\u003e\n        \u003ctd\u003e9.9\u003c\/td\u003e\n        \u003ctd\u003e2 \u0026amp; 4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eVarious\u003c\/td\u003e\n        \u003ctd\u003e47-96619M\u003c\/td\u003e\n        \u003ctd\u003eAlso 47-84027M\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003e15\u003c\/td\u003e\n        \u003ctd\u003e15\u003c\/td\u003e\n        \u003ctd\u003e2 \u0026amp; 4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eVarious\u003c\/td\u003e\n        \u003ctd\u003e47-96619M\u003c\/td\u003e\n        \u003ctd\u003eAlso 47-84027M\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMariner\u003c\/td\u003e\n        \u003ctd\u003e9.9\u003c\/td\u003e\n        \u003ctd\u003e9.9\u003c\/td\u003e\n        \u003ctd\u003e2 \u0026amp; 4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eVarious\u003c\/td\u003e\n        \u003ctd\u003e47-96619M\u003c\/td\u003e\n        \u003ctd\u003eAlso 47-84027M\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMariner\u003c\/td\u003e\n        \u003ctd\u003e15\u003c\/td\u003e\n        \u003ctd\u003e15\u003c\/td\u003e\n        \u003ctd\u003e2 \u0026amp; 4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eVarious\u003c\/td\u003e\n        \u003ctd\u003e47-96619M\u003c\/td\u003e\n        \u003ctd\u003eAlso 47-84027M\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\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect OEM replacement\u003c\/dd\u003e\n  \u003cdt\u003eMaterial\u003c\/dt\u003e\n\u003cdd\u003eNeoprene\u003c\/dd\u003e\n  \u003cdt\u003eColor\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n  \u003cdt\u003eOverall Diameter\u003c\/dt\u003e\n\u003cdd\u003e40 mm (1.57 in)\u003c\/dd\u003e\n  \u003cdt\u003eHub Diameter\u003c\/dt\u003e\n\u003cdd\u003e11.9 mm (0.47 in)\u003c\/dd\u003e\n  \u003cdt\u003eHeight\u003c\/dt\u003e\n\u003cdd\u003e18 mm (0.71 in)\u003c\/dd\u003e\n  \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e14 g (0.5 oz)\u003c\/dd\u003e\n  \u003cdt\u003eInternal Shaft Diameter\u003c\/dt\u003e\n\u003cdd\u003e11.9 mm (0.47 in)\u003c\/dd\u003e\n  \u003cdt\u003eNumber of Blades\u003c\/dt\u003e\n\u003cdd\u003e6\u003c\/dd\u003e\n  \u003cdt\u003eKey Included\u003c\/dt\u003e\n\u003cdd\u003eYes\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 (replaces 682-44352-00-00)\u003c\/li\u003e\n  \u003cli\u003e1 x \u003cspan style=\"color:#d0021b;\"\u003eKey (replaces 90280-03024)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the battery and spark plug leads for safety.\u003c\/li\u003e\n  \u003cli\u003ePlace the outboard in neutral gear and remove the lower unit (gearcase) bolts.\u003c\/li\u003e\n  \u003cli\u003eCarefully lower the gearcase to access the water pump housing.\u003c\/li\u003e\n  \u003cli\u003eRemove the water pump housing bolts and lift the housing to expose the impeller.\u003c\/li\u003e\n  \u003cli\u003eNote the rotational direction of the old impeller vanes before removing it.\u003c\/li\u003e\n  \u003cli\u003eRemove the old impeller, key, and gaskets. Clean all mating surfaces thoroughly.\u003c\/li\u003e\n  \u003cli\u003eInstall the new key in the driveshaft keyway.\u003c\/li\u003e\n  \u003cli\u003eSlide the new impeller onto the driveshaft, rotating it in the direction of engine operation to bend the vanes correctly.\u003c\/li\u003e\n  \u003cli\u003eReinstall the water pump housing with new gaskets and tighten bolts to the manufacturer's specified torque.\u003c\/li\u003e\n  \u003cli\u003eReattach the lower unit to the outboard, ensuring the driveshaft and shift shaft align properly.\u003c\/li\u003e\n  \u003cli\u003eOnce assembled, test the engine using a water source (flushing muffs or in water) to confirm a strong, steady stream from the tell-tale outlet.\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 impeller will fit my engine?\u003c\/summary\u003e\n  \u003cp\u003eFirst, check the Engine \u0026amp; Model Compatibility table on this page. Second, cross-reference your existing part number with those in our Part Number Matrix. If you are still unsure, especially with Mercury\/Mariner models, we recommend visually comparing your old impeller with our product images and dimensions before purchasing.\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 intermittent water stream from the \"tell-tale\" outlet, the engine overheating alarm sounding, or visible steam from the exhaust. Brittle, cracked, or missing vanes on the old impeller are clear indicators it needs replacement.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow often should I replace my outboard's impeller?\u003c\/summary\u003e\n  \u003cp\u003eAs a preventative maintenance measure, it is recommended to replace the impeller every 1-2 years or every 100-200 hours of operation, whichever comes first. For engines used in saltwater or sandy\/silty conditions, annual replacement is strongly advised.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhy did my new impeller get damaged soon after installation?\u003c\/summary\u003e\n  \u003cp\u003ePremature failure is often caused by running the engine dry, even for a few seconds, which can burn the neoprene vanes. It can also result from debris in the cooling system or incorrect installation (e.g., vanes pointing the wrong direction).\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs this part identical to the original OEM version?\u003c\/summary\u003e\n  \u003cp\u003eThis is an aftermarket part designed to meet or exceed OEM specifications for fit, form, and function. It is made from high-quality neoprene, just like many original parts, to ensure reliable performance.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDoes this impeller fit newer Yamaha 4-Stroke models (post-2000)?\u003c\/summary\u003e\n  \u003cp\u003eNo, this specific impeller is only listed for Yamaha F9.9 and F15 4-stroke models manufactured up to the year 2000. Newer models may use a different part number.\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":50723777184059,"sku":"SL-R0EQ-6JTJ","price":12.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/SL-R0EQ-6JTJ.png?v=1763031556","url":"https:\/\/seasierra.com\/products\/water-pump-impeller-fits-yamaha-mercury-mariner-9-9-15-hp-replaces-682-44352-00-00-47-96619m","provider":"SeaSierra","version":"1.0","type":"link"}