{"product_id":"water-pump-impeller-repair-kit-fits-mercury-mariner-30-125-hp-replaces-46-8m0113799-46-43024a7","title":"Water Pump Impeller Repair Kit – Fits Mercury\/Mariner 30-125 HP (Replaces 46-8M0113799, 46-43024A7)","description":"\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\u003csection\u003e\n  \u003ch2\u003eProduct Details\u003c\/h2\u003e\n  \u003cp\u003eThis is a \u003cstrong\u003eWater Pump Impeller Repair Kit – Fits Mercury\/Mariner 30-125 HP\u003c\/strong\u003e, designed for a wide range of 2-stroke and 4-stroke outboard engines from the 1990s through the 2020s. The kit contains all necessary components to restore the engine's cooling system to optimal performance, preventing overheating and ensuring reliability.\u003c\/p\u003e\n  \u003cp\u003eIt serves as a direct interchange for Mercury part numbers 46-8M0113799 and the superseded 46-43024A7, as well as Sierra aftermarket part 18-3688.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eEngineered for direct replacement installation.\u003c\/li\u003e\n    \u003cli\u003eIncludes key 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          \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\u003e46-8M0113799\u003c\/td\u003e\n          \u003ctd\u003eCurrent OEM Part Number\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\u003c\/td\u003e\n          \u003ctd\u003e46-43024A7\u003c\/td\u003e\n          \u003ctd\u003eSuperseded by 46-8M0113799\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eSierra\u003c\/td\u003e\n          \u003ctd\u003e18-3688\u003c\/td\u003e\n          \u003ctd\u003eAftermarket Interchange\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 and Mariner outboard engines, check your serial number range where applicable to ensure correct fitment.\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\u003c\/td\u003e\n          \u003ctd\u003e3-Cylinder Bigfoot\u003c\/td\u003e\n          \u003ctd\u003e30\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003eUp to 1B226999\u003c\/td\u003e\n          \u003ctd\u003e46-8M0113799\u003c\/td\u003e\n          \u003ctd\u003eSuperseded 46-43024A7\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\u003c\/td\u003e\n          \u003ctd\u003e4-Cylinder\u003c\/td\u003e\n          \u003ctd\u003e40, 45, 50, 60\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003eVarious\u003c\/td\u003e\n          \u003ctd\u003e46-8M0113799\u003c\/td\u003e\n          \u003ctd\u003eSuperseded 46-43024A7\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\u003c\/td\u003e\n          \u003ctd\u003e3-Cylinder\u003c\/td\u003e\n          \u003ctd\u003e55, 60, 65\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke\u003c\/td\u003e\n          \u003ctd\u003e0G760300 \u0026amp; Up\u003c\/td\u003e\n          \u003ctd\u003e46-8M0113799\u003c\/td\u003e\n          \u003ctd\u003eSuperseded 46-43024A7\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\u003c\/td\u003e\n          \u003ctd\u003e3-Cylinder\u003c\/td\u003e\n          \u003ctd\u003e65 Jet\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke\u003c\/td\u003e\n          \u003ctd\u003e0G760300-1B000001 \u0026amp; Up\u003c\/td\u003e\n          \u003ctd\u003e46-8M0113799\u003c\/td\u003e\n          \u003ctd\u003eSuperseded 46-43024A7\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\u003c\/td\u003e\n          \u003ctd\u003e3-Cylinder\u003c\/td\u003e\n          \u003ctd\u003e75\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke\u003c\/td\u003e\n          \u003ctd\u003e0G760300 \u0026amp; Up\u003c\/td\u003e\n          \u003ctd\u003e46-8M0113799\u003c\/td\u003e\n          \u003ctd\u003eSuperseded 46-43024A7\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\u003c\/td\u003e\n          \u003ctd\u003e3-Cylinder (1.5L)\u003c\/td\u003e\n          \u003ctd\u003e75\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke (OptiMax)\u003c\/td\u003e\n          \u003ctd\u003e0T980000-2B112577\u003c\/td\u003e\n          \u003ctd\u003e46-8M0113799\u003c\/td\u003e\n          \u003ctd\u003eSuperseded 46-43024A7\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e75, 80, 90, 100, 115\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003eVarious\u003c\/td\u003e\n          \u003ctd\u003e46-8M0113799\u003c\/td\u003e\n          \u003ctd\u003eSuperseded 46-43024A7\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\u003c\/td\u003e\n          \u003ctd\u003e3-Cylinder\u003c\/td\u003e\n          \u003ctd\u003e90\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke\u003c\/td\u003e\n          \u003ctd\u003e0G760300 \u0026amp; Up\u003c\/td\u003e\n          \u003ctd\u003e46-8M0113799\u003c\/td\u003e\n          \u003ctd\u003eSuperseded 46-43024A7\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\u003c\/td\u003e\n          \u003ctd\u003e3-Cylinder (1.5L)\u003c\/td\u003e\n          \u003ctd\u003e90, 115, 125\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke (OptiMax)\u003c\/td\u003e\n          \u003ctd\u003eVarious\u003c\/td\u003e\n          \u003ctd\u003e46-8M0113799\u003c\/td\u003e\n          \u003ctd\u003eSuperseded 46-43024A7\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\u003c\/td\u003e\n          \u003ctd\u003e4-Cylinder\u003c\/td\u003e\n          \u003ctd\u003e100, 115, 125\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke\u003c\/td\u003e\n          \u003ctd\u003e0G760300–0T979999\u003c\/td\u003e\n          \u003ctd\u003e46-8M0113799\u003c\/td\u003e\n          \u003ctd\u003eSuperseded 46-43024A7\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 Repair Kit\u003c\/dd\u003e\n    \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement\u003c\/dd\u003e\n    \u003cdt\u003eQuality\u003c\/dt\u003e\n\u003cdd\u003eHigh-quality aftermarket component\u003c\/dd\u003e\n    \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003eVaries by manufacturer\u003c\/dd\u003e\n  \u003c\/dl\u003e\n\n  \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eImpeller (Replaces 47-43024T)\u003c\/li\u003e\n    \u003cli\u003eGaskets\u003c\/li\u003e\n    \u003cli\u003eO-Rings\u003c\/li\u003e\n    \u003cli\u003eMounting Hardware\u003c\/li\u003e\n    \u003cli\u003eKey\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 linkage before beginning work.\u003c\/li\u003e\n    \u003cli\u003eRemove the bolts securing the lower unit (gearcase) and carefully lower it from the midsection.\u003c\/li\u003e\n    \u003cli\u003eUnbolt and remove the old water pump housing, gaskets, and impeller. Note the orientation of the impeller vanes.\u003c\/li\u003e\n    \u003cli\u003eThoroughly clean the mating surfaces on the gearcase and driveshaft.\u003c\/li\u003e\n    \u003cli\u003eInstall the new key, gaskets, and impeller (with vanes oriented correctly) from the kit.\u003c\/li\u003e\n    \u003cli\u003eReassemble the housing and torque bolts to the manufacturer's specified value.\u003c\/li\u003e\n    \u003cli\u003eCarefully reinstall the lower unit, ensuring the driveshaft, shift shaft, and water tube align correctly.\u003c\/li\u003e\n    \u003cli\u003eReconnect the shift linkage and battery terminals.\u003c\/li\u003e\n    \u003cli\u003eBefore launching, test the engine using a flush attachment (\"muffs\") to verify water is pumping correctly.\u003c\/li\u003e\n  \u003c\/ol\u003e\n\n  \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n  \u003cdetails\u003e\u003csummary\u003eHow do I know if this kit fits my engine?\u003c\/summary\u003e\u003cp\u003eThis kit is designed for a broad range of Mercury\/Mariner 30-125 HP outboards. The most reliable method is to check your model, year, and serial number against the compatibility table. If your engine is listed, the kit is a confirmed fit.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eWhat are the signs of a failing water pump impeller?\u003c\/summary\u003e\u003cp\u003eCommon symptoms include a weak or non-existent \"telltale\" water stream, engine overheating alarms, and reduced engine performance. Visible signs on the old impeller include cracked, brittle, or missing vanes.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eHow often should the impeller be replaced?\u003c\/summary\u003e\u003cp\u003eAs a preventative maintenance item, most manufacturers recommend replacing the water pump impeller every 1-2 years or every 100-200 hours of use, whichever comes first. This interval can be shorter if you operate in saltwater or sandy\/silty conditions.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\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, batch-inspected for consistency.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\u003c\/details\u003e\n  \u003cdetails\u003e\u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\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\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\u003cb\u003ePro-Grade Standards\u003c\/b\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eFast Global Fulfillment\u003c\/b\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cb\u003eManufacturer-Direct Value\u003c\/b\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":50723965927739,"sku":"22KM027","price":133.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Water_Pump_Impeller_Kit_for_Mercury_40_to_250_HP_46-43024A7_46-8M0113799_-_JLM_MARINE-8290039.jpg?v=1763038613","url":"https:\/\/seasierra.com\/products\/water-pump-impeller-repair-kit-fits-mercury-mariner-30-125-hp-replaces-46-8m0113799-46-43024a7","provider":"SeaSierra","version":"1.0","type":"link"}