{"product_id":"water-pump-impeller-kit-fits-mercury-mariner-3-9-9-8-hp-replaces-mercury-47-89980t1","title":"Water Pump Impeller Kit – Fits Mercury\/Mariner 3.9-9.8 HP (Replaces Mercury 47-89980T1)","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 – Fits Mercury\/Mariner 3.9-9.8 HP (Replaces 47-89980T1)\u003c\/strong\u003e is designed for Mercury and Mariner 2-stroke outboard engines from 3.9 HP to 9.8 HP, manufactured between 1979 and 1986. It is specifically for models requiring an impeller with a 0.438\" inner diameter.\u003c\/p\u003e\n\u003cp\u003eThis kit serves as a direct replacement for multiple OEM and aftermarket part numbers, including Mercury 47-89980T1, Sierra 18-3006, GLM 700-12271, SEI 96-260-03AK, and Mercury Quicksilver 47-89980Q1.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEngineered for direct replacement of the original impeller and related seals.\u003c\/li\u003e\n  \u003cli\u003eThe impeller is made from durable neoprene rubber for reliable performance.\u003c\/li\u003e\n  \u003cli\u003eIncludes essential components for a complete water pump 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 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\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003e47-89980T1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury Quicksilver\u003c\/td\u003e\n        \u003ctd\u003e47-89980Q1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra\u003c\/td\u003e\n        \u003ctd\u003e18-3006\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eGLM\u003c\/td\u003e\n        \u003ctd\u003e700-12271\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSEI\u003c\/td\u003e\n        \u003ctd\u003e96-260-03AK\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\/Force models, it is crucial to verify your engine's serial number against the ranges provided to ensure an exact match.\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\u003e9.8 HP (Model 110)\u003c\/td\u003e\n        \u003ctd\u003e9.8\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1979–1985\u003c\/td\u003e\n        \u003ctd\u003e47-89980T1\u003c\/td\u003e\n        \u003ctd\u003eMade in USA: Serial Range 5206550 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003e7.5 HP\u003c\/td\u003e\n        \u003ctd\u003e7.5\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1979–1986\u003c\/td\u003e\n        \u003ctd\u003e47-89980T1\u003c\/td\u003e\n        \u003ctd\u003eMade in USA: Serial Range 5206550 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003e4.5 HP (1-Cyl.)\u003c\/td\u003e\n        \u003ctd\u003e4.5\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1980–1985\u003c\/td\u003e\n        \u003ctd\u003e47-89980T1\u003c\/td\u003e\n        \u003ctd\u003eMade in USA: Serial Range 5595532 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003e4 HP (1-Cyl.)\u003c\/td\u003e\n        \u003ctd\u003e4\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1982–1986\u003c\/td\u003e\n        \u003ctd\u003e47-89980T1\u003c\/td\u003e\n        \u003ctd\u003eMade in USA: Serial Range 5595532-0A809600\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003e9.8 HP (Model 110)\u003c\/td\u003e\n        \u003ctd\u003e9.8\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1979–1985\u003c\/td\u003e\n        \u003ctd\u003e47-89980T1\u003c\/td\u003e\n        \u003ctd\u003eMade in AUS: Serial Range 8057545 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003e7.5 HP\u003c\/td\u003e\n        \u003ctd\u003e7.5\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1979–1986\u003c\/td\u003e\n        \u003ctd\u003e47-89980T1\u003c\/td\u003e\n        \u003ctd\u003eMade in AUS: Serial Range 8057545 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003e4.5 HP (1-Cyl.)\u003c\/td\u003e\n        \u003ctd\u003e4.5\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1980–1985\u003c\/td\u003e\n        \u003ctd\u003e47-89980T1\u003c\/td\u003e\n        \u003ctd\u003eMade in AUS: Serial Range 8068065 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003e4 HP (1-Cyl.)\u003c\/td\u003e\n        \u003ctd\u003e4\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1982–1986\u003c\/td\u003e\n        \u003ctd\u003e47-89980T1\u003c\/td\u003e\n        \u003ctd\u003eMade in AUS: Serial Range 8068065 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003e9.8 HP (Model 110)\u003c\/td\u003e\n        \u003ctd\u003e9.8\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1979–1985\u003c\/td\u003e\n        \u003ctd\u003e47-89980T1\u003c\/td\u003e\n        \u003ctd\u003eMade in BEL: Serial Range 9217756 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003e7.5 HP\u003c\/td\u003e\n        \u003ctd\u003e7.5\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1979–1986\u003c\/td\u003e\n        \u003ctd\u003e47-89980T1\u003c\/td\u003e\n        \u003ctd\u003eMade in BEL: Serial Range 9217756 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003e4.5 HP (1-Cyl.)\u003c\/td\u003e\n        \u003ctd\u003e4.5\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1980–1985\u003c\/td\u003e\n        \u003ctd\u003e47-89980T1\u003c\/td\u003e\n        \u003ctd\u003eMade in BEL: Serial Range 9258281 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003e4 HP (1-Cyl.)\u003c\/td\u003e\n        \u003ctd\u003e4\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1982–1986\u003c\/td\u003e\n        \u003ctd\u003e47-89980T1\u003c\/td\u003e\n        \u003ctd\u003eMade in BEL: Serial Range 9258281-9477829\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003e9.8 HP (Model 110)\u003c\/td\u003e\n        \u003ctd\u003e9.8\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1979–1985\u003c\/td\u003e\n        \u003ctd\u003e47-89980T1\u003c\/td\u003e\n        \u003ctd\u003eMade in CAN: Serial Range 7125388 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003e7.5 HP\u003c\/td\u003e\n        \u003ctd\u003e7.5\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1979–1986\u003c\/td\u003e\n        \u003ctd\u003e47-89980T1\u003c\/td\u003e\n        \u003ctd\u003eMade in CAN: Serial Range 7125388 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003e4.5 HP (1-Cyl.)\u003c\/td\u003e\n        \u003ctd\u003e4.5\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1980–1985\u003c\/td\u003e\n        \u003ctd\u003e47-89980T1\u003c\/td\u003e\n        \u003ctd\u003eMade in CAN: Serial Range 7147238 \u0026amp; Up\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n        \u003ctd\u003e4 HP (1-Cyl.)\u003c\/td\u003e\n        \u003ctd\u003e4\u003c\/td\u003e\n        \u003ctd\u003e2-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1982–1986\u003c\/td\u003e\n        \u003ctd\u003e47-89980T1\u003c\/td\u003e\n        \u003ctd\u003eMade in CAN: Serial Range 7143688 \u0026amp; Up\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 replacement\u003c\/dd\u003e\n  \u003cdt\u003eImpeller ID\u003c\/dt\u003e\n\u003cdd\u003e0.438\" (11.13 mm)\u003c\/dd\u003e\n  \u003cdt\u003eMaterial\u003c\/dt\u003e\n\u003cdd\u003eNeoprene rubber (impeller)\u003c\/dd\u003e\n  \u003cdt\u003eCompatibility\u003c\/dt\u003e\n\u003cdd\u003eMercury\/Mariner outboards with specified HP ranges\u003c\/dd\u003e\n  \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\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 Sleeve (700-12963)\u003c\/li\u003e\n  \u003cli\u003e1 x Impeller (700-89800)\u003c\/li\u003e\n  \u003cli\u003e1 x Wear Plate (700-12560)\u003c\/li\u003e\n  \u003cli\u003e1 x O-Ring (700-81230)\u003c\/li\u003e\n  \u003cli\u003e1 x O-Ring (700-81090)\u003c\/li\u003e\n  \u003cli\u003e1 x Seal (700-85651)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the engine's battery and shift the outboard into neutral.\u003c\/li\u003e\n  \u003cli\u003eRemove the lower unit (gearcase) by unbolting it from the engine leg.\u003c\/li\u003e\n  \u003cli\u003eUnscrew the bolts holding the water pump housing and lift it off the driveshaft.\u003c\/li\u003e\n  \u003cli\u003eTake note of the old components' orientation before removal. Remove the old impeller, wear plate, and seals.\u003c\/li\u003e\n  \u003cli\u003eThoroughly clean the inside of the housing and inspect it for cracks or warping.\u003c\/li\u003e\n  \u003cli\u003eInstall the new wear plate, gaskets, and O-rings as provided in the kit.\u003c\/li\u003e\n  \u003cli\u003eSlide the new impeller onto the driveshaft, turning the shaft clockwise to bed the vanes correctly.\u003c\/li\u003e\n  \u003cli\u003eApply a thin layer of marine grease to the inside of the housing and reinstall it. Secure the bolts to the manufacturer's torque specifications.\u003c\/li\u003e\n  \u003cli\u003eReattach the lower unit to the engine.\u003c\/li\u003e\n  \u003cli\u003eOnce fully assembled, start the engine in a water-filled test tank or with a hose attachment to confirm water is pumping correctly 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 impeller kit fits my specific engine?\u003c\/summary\u003e\n  \u003cp\u003eCheck your engine's model, horsepower (HP), and year against our compatibility chart. Most importantly, verify your engine's serial number falls within the specified ranges listed in the table, as this is the most accurate way to guarantee fitment. This kit is only compatible with models requiring a 0.438\" impeller ID.\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 the engine overheating at idle or low speeds, a weak or non-existent water stream from the \"tell-tale\" indicator outlet, and a dry, cracked, or brittle appearance of the impeller vanes upon inspection.\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\u003eFor preventative maintenance, it is recommended to inspect the impeller annually and replace it every 1-2 years or every 100-200 hours of operation. Replacement frequency should be increased if you frequently operate in saltwater, silty, or sandy conditions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs the pump housing included with this kit?\u003c\/summary\u003e\n  \u003cp\u003eNo, this is an impeller service kit. It includes the impeller, wear plate, sleeve, O-rings, and seals needed to rebuild your existing water pump housing. The housing itself is not included.\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\ndetails\u0026gt;\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\/details\u003e\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723964059963,"sku":"20KM005","price":35.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Water_Pump_Impeller_Kit_for_Mercury_39-98_HP_47-89980T1_-_JLM_MARINE-8289950.jpg?v=1763038531","url":"https:\/\/seasierra.com\/products\/water-pump-impeller-kit-fits-mercury-mariner-3-9-9-8-hp-replaces-mercury-47-89980t1","provider":"SeaSierra","version":"1.0","type":"link"}