{"product_id":"water-pump-impeller-kit-fits-mercury-mariner-outboard-30-70-hp-replaces-47-89983q1-47-89983t1-47-89983t2","title":"Water Pump Impeller Kit – Fits Mercury\/Mariner Outboard 30-70 HP (Replaces 47-89983Q1, 47-89983T1, 47-89983T2)","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 Kit\u003c\/strong\u003e provides a direct replacement solution for various Mercury and Mariner outboard engines, specifically 2-stroke models from 30 HP to 70 HP manufactured from the 1970s through the late 1990s. It is engineered to restore cooling system performance and prevent engine overheating.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct interchange for Mercury parts 47-89983Q1, 47-89983T1, and 47-89983T2, as well as aftermarket references like Sierra 18-3207.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned for a vehicle-specific fit to ensure proper installation.\u003c\/li\u003e\n  \u003cli\u003eIncludes essential gaskets and O-rings for a complete service.\u003c\/li\u003e\n  \u003cli\u003eFeatures a machined exterior finish for precise alignment and durability.\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 suppliers.\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\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003e47-89983Q1\u003c\/td\u003e\n        \u003ctd\u003eOriginal equipment reference.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003e47-89983T1\u003c\/td\u003e\n        \u003ctd\u003eSuperseded part number.\u003c\/td\u003e\n      \u003c\/tr\u003e\n       \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003e47-89983T2\u003c\/td\u003e\n        \u003ctd\u003eSuperseded part number.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-3207\u003c\/td\u003e\n        \u003ctd\u003eAftermarket cross-reference.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSLSRPMT\u003c\/td\u003e\n        \u003ctd\u003e47-89983Q1\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 serial number in the table below to ensure an exact match.\u003c\/p\u003e\n\u003cp\u003eThis kit is designed for a wide range of Mercury and Mariner 2-stroke outboards and jet drives. Checking your engine's serial number against the listed ranges is critical for verifying compatibility.\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\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003eOutboard\u003c\/td\u003e\n        \u003ctd\u003e30\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e47-89983Q1\/T1\/T2\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 0C159200 THRU 0G589999, 9570790 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003eOutboard\u003c\/td\u003e\n        \u003ctd\u003e35\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e47-89983Q1\/T1\/T2\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 6445653 THRU 0B110788, 9384476 \u0026amp; Up, 9466647 \u0026amp; Up, B110789 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003eOutboard\u003c\/td\u003e\n        \u003ctd\u003e40\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e47-89983Q1\/T1\/T2\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 0C159200 \u0026amp; Up, 5556230 \u0026amp; Up, 7144763 \u0026amp; Up, 8064750 \u0026amp; Up, 9251456 \u0026amp; Up, 9570790 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003eOutboard\u003c\/td\u003e\n        \u003ctd\u003e45\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e47-89983Q1\/T1\/T2\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 0A719281 \u0026amp; Up, 0B110789 \u0026amp; Up, 5531630 THRU 0B110788, 7143688 THRU 0A719280, 8063985 \u0026amp; Up, 9248006 THRU 9466691, 9466692 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003eOutboard\u003c\/td\u003e\n        \u003ctd\u003e50\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e47-89983Q1\/T1\/T2\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 0A721308 \u0026amp; Up, 0B122930 THRU 0D000749, 5531630 \u0026amp; Up, 6428681 THRU 0B122929, 7143688 \u0026amp; Up, 7208333 THRU 0A721307, 8063985 \u0026amp; Up, 9248006 \u0026amp; Up, 9385911 THRU 9469199, 9469200 THRU 9683054\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003eOutboard\u003c\/td\u003e\n        \u003ctd\u003e60\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e47-89983Q1\/T1\/T2\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 0A721308 \u0026amp; Up, 0B122930 THRU 0D000749, 6428681 THRU 0B122929, 7208333 THRU 0A721307 90-13288 - 3CYL, 9385911 THRU 9469199 90-13288 - 3CYL Gear Housing, 9469200 THRU 9683054 90-16404 - 3CYL Gear Housing\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003eOutboard\u003c\/td\u003e\n        \u003ctd\u003e70\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e47-89983Q1\/T1\/T2\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 5579017 THRU 6428680, 7145938 THRU 7208332, 8065065 \u0026amp; Up, 9255131 THRU 9385910 90-90647 - 700HP, 3CYL Gear Housing\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003eJet\u003c\/td\u003e\n        \u003ctd\u003e30\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1994–1997\u003c\/td\u003e\n        \u003ctd\u003e47-89983Q1\/T1\/T2\u003c\/td\u003e\n        \u003ctd\u003eSerial Range: 0C159200-0G58999\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\u003eVehicle Specific Fit\u003c\/dd\u003e\n  \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eVarious materials\u003c\/dd\u003e\n  \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e3.9 × 3.9 × 1.5 inches (99 × 99 × 38 mm)\u003c\/dd\u003e\n  \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e3.5 ounces (0.1 kg)\u003c\/dd\u003e\n  \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003e\u003ca href=\"https:\/\/www.amazon.com\/gp\/help\/customer\/display.html?nodeId=G6E3B2E8QPHQ88S6\" target=\"_blank\" rel=\"nofollow noopener noreferrer\"\u003eAmazon.com Voluntary 30-Day Return Guarantee\u003c\/a\u003e\u003c\/dd\u003e\n  \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eExterior: Machined\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 47-89983T1)\u003c\/li\u003e\n  \u003cli\u003e1 x Set of Gaskets and O-rings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eBefore starting, disconnect the battery and shift the outboard into the neutral position.\u003c\/li\u003e\n  \u003cli\u003eCarefully unbolt and remove the lower unit (gearcase) from the engine's midsection.\u003c\/li\u003e\n  \u003cli\u003eLocate the water pump assembly on top of the gearcase and remove the bolts securing its housing.\u003c\/li\u003e\n  \u003cli\u003eLift off the housing and remove the old impeller, taking note of the vane orientation. Thoroughly clean any debris from the housing interior and wear plate.\u003c\/li\u003e\n  \u003cli\u003eLightly lubricate the new impeller with marine grease and install it into the housing, turning the driveshaft clockwise to seat the vanes correctly.\u003c\/li\u003e\n  \u003cli\u003eInstall the new gaskets and O-rings provided in the kit.\u003c\/li\u003e\n  \u003cli\u003eRe-install the water pump housing and torque the bolts to the manufacturer's specification.\u003c\/li\u003e\n  \u003cli\u003eRe-attach the lower unit to the midsection and test the engine using a water supply (flushing muffs) to verify strong 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\n  \u003csummary\u003eHow do I confirm this kit fits my engine?\u003c\/summary\u003e\n  \u003cp\u003eThe most reliable method is to match your engine's serial number to the ranges listed in the Engine \u0026amp; Model Compatibility table. While this kit fits many 30-70 HP models, serial number breaks are critical for confirming the correct part.\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\u003eKey indicators include a weak or non-existent water stream from the engine's tell-tale port, frequent engine overheating alarms, and reduced engine performance. An impeller can become brittle, lose fins, or spin on its hub over time.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow often should I replace the impeller?\u003c\/summary\u003e\n  \u003cp\u003eFor preventative maintenance, we recommend inspecting and\/or replacing the water pump impeller every 100 operating hours or at least once a year, whichever comes first. This interval should be shorter if you primarily operate in sandy, silty, or saltwater environments.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat is the difference between the Q1, T1, and T2 part numbers?\u003c\/summary\u003e\n  \u003cp\u003eThese suffixes typically represent revisions or variations in kit components from the original manufacturer over time. Our aftermarket kit is designed as a consolidated replacement that interchanges with all listed versions (47-89983Q1, 47-89983T1, and 47-89983T2).\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). It is built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, it is batch-inspected for consistency and reliability.\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 is 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 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 part, not an OEM component. Brand names and part numbers are used for reference purposes only.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended for safety and performance. Improper installation can lead to engine damage.\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 conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions, typically arriving in 5–15 days.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — We offer fair pricing by eliminating middlemen, 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":50723964584251,"sku":"K7-USO1-F31D","price":44.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/K7-USO1-F31D.png?v=1763038550","url":"https:\/\/seasierra.com\/products\/water-pump-impeller-kit-fits-mercury-mariner-outboard-30-70-hp-replaces-47-89983q1-47-89983t1-47-89983t2","provider":"SeaSierra","version":"1.0","type":"link"}