{"title":"Mercury 40-350HP 2-Stroke Outboard Parts","description":"\u003csection id=\"hero\" style=\"padding:16px; border:1px solid #e5e7eb; border-radius:8px;\"\u003e\n  \u003cp\u003eThis page focuses on Mercury 40–350HP 2‑Stroke outboard engines. It helps you quickly find compatible parts and service information, with maintenance tips, commonly replaced items, and troubleshooting guidance. You can also browse the main Mercury collection any time. Scroll to the bottom of this page to start browsing parts for this engine, and remember that on the collection page you can use the Filter \u0026amp; Sort controls to narrow results by horsepower, year range, and part category\/section.\u003c\/p\u003e\n  \u003cp\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-outboard-parts\" style=\"display:inline-block; padding:10px 14px; background:#0ea5e9; color:#fff; text-decoration:none; border-radius:6px;\"\u003eBrowse All Mercury Parts\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\"\u003e\n  \u003ch2\u003eHow to Identify Your 40–350HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eFind the identification plate on the swivel\/tilt bracket or clamp bracket. The primary number is the engine serial; many tags also show a four‑digit build year just beneath.\u003c\/li\u003e\n    \u003cli\u003eModel codes and suffixes often indicate shaft length (S, L, XL), control type (tiller vs. remote), and market\/version. Serial breaks determine the exact parts list used for your motor.\u003c\/li\u003e\n    \u003cli\u003ePlatform clues: 40–90 HP are typically inline 2‑ or 3‑cylinder 2‑strokes; 135 HP and up are usually V6 high‑output 2‑strokes (including EFI\/DFI variants). Oil‑injected models will have an onboard oil tank and lines to the engine.\u003c\/li\u003e\n    \u003cli\u003eInduction\/labeling: Carbureted units may be labeled \"Classic\/Carb\"; DFI models are commonly badged \"OptiMax.\" When in doubt, confirm by serial number.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\"\u003e\n  \u003ch2\u003ePlatform Overview\u003c\/h2\u003e\n  \u003ch3\u003e40–90 HP Inline Platforms (2‑Stroke)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInline 2‑ or 3‑cylinder, carbureted 2‑stroke; many units use oil injection rather than pre‑mix.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e40\/50\/60\/75\/90 HP 2‑Stroke variants, including utility\/SeaPro and certain Jet models.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eLightweight, simple service, good mid‑range torque for small boats and work skiffs.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eKeep carbs synced and clean, service the water pump regularly, verify correct prop pitch. Many parts interchange within serial ranges—always check the serial tag.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003e135–350 HP V‑Configuration Platforms (2‑Stroke)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse; margin-top:12px;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eHigh‑output V6\/V8 2‑stroke families in carb, EFI, and DFI (OptiMax) forms, widely used for offshore, bass, and performance applications.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e135\/150\/175\/200\/225\/250\/300+ HP 2‑Stroke models and select high‑performance variants.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eStrong hole‑shot and top‑end power; broad propeller selection; robust gearcases for heavy loads and higher speeds.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eMaintain oil injection components, filters, and thermostats\/poppet valves. DFI systems are sensitive to fuel quality—keep filters fresh and water separated. Confirm parts by serial range.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"service-kits\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are general guidelines for 2‑stroke outboards; always follow the official Mercury service manual for your exact serial range and usage.\u003c\/p\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eParts Link\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eGear oil (lower unit)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eEvery 100 hrs or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCheck for water intrusion (milky oil). Replace seals if contamination is found.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-outboard-parts\"\u003eMercury Outboard Parts\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eEvery 100 hrs or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect color and gap; replace sooner if fouling or misfire occurs.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/spark-plug\"\u003eSpark Plugs\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eFuel filter \/ water separator\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eEvery 100 hrs or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCritical on EFI\/DFI models; drain\/replace more often in high‑moisture environments.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eWater pump impeller\/kit\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eEvery 2–3 seasons (or 200–300 hrs)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eService more frequently in sandy\/silty water or when overheat alarms occur.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-water-pump-repair-kits\"\u003eMercury Water Pump Repair Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eAnodes (corrosion protection)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect each service; replace when 50% consumed\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eUse alloy appropriate for your water (aluminum, zinc, or magnesium).\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\"\u003eAnodes\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eOil injection system check\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eEvery 100 hrs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect tank screen, lines, and pump operation. If pre‑mix, confirm ratio per manual (often 50:1).\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/hoses\"\u003eHoses\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003ePropeller \u0026amp; hub inspection\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eSeasonally\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eRemove line, check for dings, and verify correct pitch for load\/RPM.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/propellers\"\u003ePropellers\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eLower unit seal kit (as needed)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eWhen leaks or milky oil present\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eReplace seals before gear damage occurs; pressure\/vacuum test recommended.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-lower-unit-seal-kits\"\u003eMercury Lower Unit Seal Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"common-parts\"\u003e\n  \u003ch2\u003eFrequently Used Parts Categories\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eRoutine Service: \u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\"\u003eService \u0026amp; Maintenance Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCooling System: \u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-water-pump-repair-kits\"\u003eMercury Water Pump Repair Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eGearcase \u0026amp; Sealing: \u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-lower-unit-seal-kits\"\u003eMercury Lower Unit Seal Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eFuel System: \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eIgnition \/ Electrical: \u003ca href=\"https:\/\/seasierra.com\/collections\/electrical-items\"\u003eElectrical Items\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCorrosion Protection: \u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\"\u003eAnodes\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePerformance \u0026amp; Protection: \u003ca href=\"https:\/\/seasierra.com\/collections\/propeller-guards\"\u003ePropeller Guards\u003c\/a\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\"\u003e\n  \u003ch2\u003eCommon Symptoms \u0026amp; Quick Checks\u003c\/h2\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eRelated Parts\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eWeak tell‑tale stream or overheat alarm\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect intake screens for blockage; verify impeller condition; test thermostat opening.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eWater pump kit, thermostat, intake screen, poppet valve\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003ePoor acceleration or power loss\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCheck prop damage\/slip; replace fuel filter; verify carb sync\/cleanliness or DFI air\/fuel pressures.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003ePropeller, fuel filter, spark plugs, reed valves\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eHard starting or rough idle\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eConfirm fresh fuel and proper prime; inspect enrichener\/choke function; check for air leaks in lines.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eFuel pump, hoses, spark plugs, carb kits\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eExcessive smoke (2‑Stroke)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eVerify oil ratio or injection setting; check for stuck thermostat causing cold running; ensure correct plugs\/heat range.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eOil injection hoses, spark plugs, thermostat\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eGearcase noise or metal in gear oil\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCheck oil level\/condition; pressure\/vacuum test for seal leaks; inspect prop hub for spin.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eLower unit seal kit, gear lube, prop hub kit\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"faq\"\u003e\n  \u003ch2\u003eFAQs\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre parts interchangeable between different years or platforms?\u003c\/summary\u003e\n    \u003cp\u003eSometimes. Many Mercury 2‑stroke families share components within a serial range, but changes across years and platforms (inline vs. V6, carb vs. EFI\/DFI) are common. Verify by serial number to ensure proper fit.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should I replace the water pump impeller?\u003c\/summary\u003e\n    \u003cp\u003eAs a general rule, every 2–3 seasons (or 200–300 hours), and sooner if you operate in sandy\/silty water or notice weak tell‑tale flow or rising temperatures. Full pump kits are recommended when wear is present.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should I change lower unit gear oil?\u003c\/summary\u003e\n    \u003cp\u003eAt least annually or every 100 hours. Inspect for metal and milky color (water contamination). If water is present, repair seals and re‑test before continued operation.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat information do you need to confirm part compatibility?\u003c\/summary\u003e\n    \u003cp\u003eThe engine serial number, horsepower, approximate year, shaft length (S\/L\/XL), and whether the engine is carbureted, EFI, or DFI (OptiMax). Photos of the nameplate and the part area also help.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"padding:16px; border:1px solid #e5e7eb; border-radius:8px;\"\u003e\n  \u003cp\u003eReady to shop? Browse the main Mercury collection and use Filter \u0026amp; Sort to narrow by horsepower, year range, and model.\u003c\/p\u003e\n  \u003cp\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/mercury-outboard-parts\" style=\"display:inline-block; padding:10px 14px; background:#0ea5e9; color:#fff; text-decoration:none; border-radius:6px;\"\u003eShop Mercury Outboard Parts\u003c\/a\u003e\u003c\/p\u003e\n  \u003cp style=\"color:#475569;\"\u003eIf you’re unsure about your model, send us a clear photo of the nameplate and the part you need—we’ll help verify compatibility.\u003c\/p\u003e\n\u003c\/section\u003e","products":[{"product_id":"water-pump-impeller-kit-fits-mercury-mercruiser-40-350-hp-replaces-47-43026q06","title":"Water Pump Impeller Kit – Fits Mercury\/Mercruiser 40-350 HP (Replaces 47-43026Q06)","description":"\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\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  table.ss-table th {\n    white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc;\n  }\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 complete \u003cstrong\u003eWater Pump Impeller Kit – Fits Mercury\/Mercruiser 40-300 HP\u003c\/strong\u003e provides all the necessary components to service or rebuild the sea water pump on a wide range of Mercury\/Mariner outboards (40-350 HP, 1990s–present) and Mercruiser Alpha One Gen II sterndrives (S\/N 0D469859+). Regular impeller replacement is critical for preventing engine overheat damage.\u003c\/p\u003e\n  \u003cp\u003eThis assembly is a direct replacement for Mercury\/Mercruiser part number 47-43026Q06 (superseded by 8M0100526) and interchanges with Sierra 18-3214, GLM 12042, and Mallory 9-48313.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eEngineered as a direct-fit replacement for the complete OEM water pump assembly.\u003c\/li\u003e\n    \u003cli\u003eRestores cooling system performance to prevent overheating.\u003c\/li\u003e\n    \u003cli\u003eIncludes impeller, housing, gaskets, seals, and plates for a comprehensive service.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\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\u003eSuperseded By\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\/Mercruiser\u003c\/td\u003e\n          \u003ctd\u003e47-43026Q06\u003c\/td\u003e\n          \u003ctd\u003e8M0100526\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eSierra\u003c\/td\u003e\n          \u003ctd\u003e18-3214\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eGLM\u003c\/td\u003e\n          \u003ctd\u003e12042\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMallory\u003c\/td\u003e\n          \u003ctd\u003e9-48313\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\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\u003eFits a variety of 2-stroke and 4-stroke Mercury\/Mariner outboards from 40 to 350 HP.\u003c\/p\u003e\n  \u003cp\u003eAlso compatible with Mercruiser Alpha One Generation II sterndrive units with serial numbers 0D469859 and above.\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\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\u003e40\/45\/50\/60 HP\u003c\/td\u003e\n          \u003ctd\u003e40-60\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e47-43026Q06\u003c\/td\u003e\n          \u003ctd\u003eEFI Bigfoot\/Command Thrust models\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n          \u003ctd\u003e60 HP\u003c\/td\u003e\n          \u003ctd\u003e60\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke\u003c\/td\u003e\n          \u003ctd\u003e47-43026Q06\u003c\/td\u003e\n          \u003ctd\u003eBigfoot (S\/N 0D000750 \u0026amp; above)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n          \u003ctd\u003e70\/75\/80\/90 HP\u003c\/td\u003e\n          \u003ctd\u003e70-90\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke\u003c\/td\u003e\n          \u003ctd\u003e47-43026Q06\u003c\/td\u003e\n          \u003ctd\u003eS\/N 0A996142 \u0026amp; above\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n          \u003ctd\u003e75\/90\/115 HP\u003c\/td\u003e\n          \u003ctd\u003e75-115\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e47-43026Q06\u003c\/td\u003e\n          \u003ctd\u003eAll models\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n          \u003ctd\u003e100\/115\/125 HP\u003c\/td\u003e\n          \u003ctd\u003e100-125\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke\u003c\/td\u003e\n          \u003ctd\u003e47-43026Q06\u003c\/td\u003e\n          \u003ctd\u003e4-cylinder models with pump cover screws without insulators\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n          \u003ctd\u003e135\/150\/175 HP\u003c\/td\u003e\n          \u003ctd\u003e135-175\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e47-43026Q06\u003c\/td\u003e\n          \u003ctd\u003eVerado models\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n          \u003ctd\u003e200\/225\/250 HP\u003c\/td\u003e\n          \u003ctd\u003e200-250\u003c\/td\u003e\n          \u003ctd\u003e2-Stroke\u003c\/td\u003e\n          \u003ctd\u003e47-43026Q06\u003c\/td\u003e\n          \u003ctd\u003e3.0L models\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercury\/Mariner\u003c\/td\u003e\n          \u003ctd\u003e200\/225\/250\/350 HP\u003c\/td\u003e\n          \u003ctd\u003e200-350\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e47-43026Q06\u003c\/td\u003e\n          \u003ctd\u003eVerado models\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eMercruiser\u003c\/td\u003e\n          \u003ctd\u003eAlpha One Gen II\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n          \u003ctd\u003e47-43026Q06\u003c\/td\u003e\n          \u003ctd\u003eS\/N 0D469859 \u0026amp; above\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n  \u003cdl\u003e\n    \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eWater Pump Impeller Kit with Housing\u003c\/dd\u003e\n    \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement for OEM assembly\u003c\/dd\u003e\n    \u003cdt\u003eConnection\u003c\/dt\u003e\n\u003cdd\u003eDirect mount to water pump assembly\u003c\/dd\u003e\n    \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eIncludes complete water pump service components\u003c\/dd\u003e\n  \u003c\/dl\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003e1 x Impeller (47-43026T2)\u003c\/li\u003e\n    \u003cli\u003e1 x Face Seal (26-816575A2)\u003c\/li\u003e\n    \u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e2 x O-Ring (25-21836)\u003c\/span\u003e\u003c\/li\u003e\n    \u003cli\u003e1 x Seal Ring Gasket (26-45577)\u003c\/li\u003e\n    \u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e2 x Impeller Gasket (27-817277)\u003c\/span\u003e\u003c\/li\u003e\n    \u003cli\u003e1 x Impeller Gasket (27-430331)\u003c\/li\u003e\n    \u003cli\u003eAdditional gaskets, plates, and hardware as shown in images\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n  \u003col\u003e\n    \u003cli\u003eDisconnect the battery and ensure the engine is off and cool.\u003c\/li\u003e\n    \u003cli\u003eLower the sterndrive unit to the full down position.\u003c\/li\u003e\n    \u003cli\u003eRemove the propeller and drain the gearcase oil.\u003c\/li\u003e\n    \u003cli\u003eUnbolt and carefully separate the lower unit from the upper housing.\u003c\/li\u003e\n    \u003cli\u003eLocate and unbolt the water pump housing on top of the lower unit.\u003c\/li\u003e\n    \u003cli\u003eRemove the old housing, impeller, gaskets, and wear plates. Clean all mating surfaces thoroughly.\u003c\/li\u003e\n    \u003cli\u003eInstall the new gaskets, wear plate, and impeller key.\u003c\/li\u003e\n    \u003cli\u003eInstall the new impeller, making sure to orient the vanes correctly (typically clockwise).\u003c\/li\u003e\n    \u003cli\u003eAssemble the new housing with its seals and gaskets. Torque bolts to manufacturer specifications.\u003c\/li\u003e\n    \u003cli\u003eRe-install the lower unit, refill with gear oil, and re-install the propeller.\u003c\/li\u003e\n    \u003cli\u003eReconnect the battery and test the engine with a water supply, ensuring a strong stream from the tell-tale.\u003c\/li\u003e\n  \u003c\/ol\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n  \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow can I tell if my old impeller has failed?\u003c\/summary\u003e\n    \u003cp\u003eCommon signs of a bad impeller include a weak or non-existent water stream from the \"tell-tale\" outlet, engine overheating alarms, and visible cracks, tears, or missing vanes on the impeller itself upon inspection.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should I replace my water pump impeller?\u003c\/summary\u003e\n    \u003cp\u003eFor preventative maintenance, it is recommended to replace the impeller every 1-2 seasons or every 100-200 hours of operation, whichever comes first. Usage in saltwater or sandy\/silty conditions may require more frequent changes.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWill this kit fit an Alpha One Gen I sterndrive?\u003c\/summary\u003e\n    \u003cp\u003eNo, this kit is specifically for Alpha One Gen II sterndrives with serial numbers 0D469859 and above. Gen I drives use a different water pump kit. Always verify your drive model and serial number before ordering.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDo I need special tools for installation?\u003c\/summary\u003e\n    \u003cp\u003eStandard mechanical tools (socket set, wrenches, screwdriver) are required. A torque wrench is highly recommended to ensure bolts are tightened to the correct specification. A gear lube pump will be needed to refill the lower unit oil.\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\u003c\/section\u003e\n\u003csection\u003e\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\u003c\/section\u003e\n\u003csection\u003e\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":50723973759291,"sku":"20KM003","price":49.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Water_Pump_Impeller_Kit_for_Mercury_40-300_HP_47-43026Q06_-_JLM_MARINE-8289922.jpg?v=1763038917"}],"url":"https:\/\/seasierra.com\/collections\/mercury-40-350hp-2-stroke-outboard-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}