{"product_id":"water-pump-impeller-fits-honda-marine-4hp-10hp-outboards-replaces-honda-19210-881-003-19210-881-a01-19210-881-a02","title":"Water Pump Impeller – Fits Honda Marine 4HP–10HP Outboards (Replaces Honda 19210-881-003, 19210-881-A01, 19210-881-A02)","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;\n    word-break:normal;\n    letter-spacing:normal;\n    font-weight:600;\n    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 high-quality aftermarket \u003cstrong\u003eWater Pump Impeller – Fits Honda Marine 4HP–10HP Outboards (Replaces 19210-881-003)\u003c\/strong\u003e is designed for reliable performance in Honda Marine 4-stroke outboard engines, including 4HP, 5HP, 5.5HP, 7.5HP, 8HP, and 10HP models.\u003c\/p\u003e\n  \u003cp\u003eIt serves as a direct replacement for several OEM and aftermarket part numbers, including Honda 19210-881-003, 19210-881-A01, 19210-881-A02, Sierra 18-3245, and more.\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003eEngineered for direct OEM replacement fit and function.\u003c\/li\u003e\n    \u003cli\u003eManufactured from a durable rubber\/neoprene compound for longevity.\u003c\/li\u003e\n    \u003cli\u003eMeets or exceeds original equipment specifications for reliable cooling.\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        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eHonda\u003c\/td\u003e\n          \u003ctd\u003e19210-881-003\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eHonda\u003c\/td\u003e\n          \u003ctd\u003e19210-881-A01\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eHonda\u003c\/td\u003e\n          \u003ctd\u003e19210-881-A02\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eSierra\u003c\/td\u003e\n          \u003ctd\u003e18-3245\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eCEF\u003c\/td\u003e\n          \u003ctd\u003eCEF500327\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eGLM\u003c\/td\u003e\n          \u003ctd\u003eGLM91008\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eHJB\u003c\/td\u003e\n          \u003ctd\u003eHJB-H-14A01\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\u003eCompatibility for Honda outboards is based on the model and horsepower range. Verify that your specific model code matches the details below.\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\u003eHonda\u003c\/td\u003e\n          \u003ctd\u003eBF4.5B\u003c\/td\u003e\n          \u003ctd\u003e4.5HP\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n          \u003ctd\u003e19210-881-003\u003c\/td\u003e\n          \u003ctd\u003e-\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eHonda\u003c\/td\u003e\n          \u003ctd\u003eBF5, BF50F\u003c\/td\u003e\n          \u003ctd\u003e5HP\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n          \u003ctd\u003e19210-881-003\u003c\/td\u003e\n          \u003ctd\u003e-\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eHonda\u003c\/td\u003e\n          \u003ctd\u003eBF5.5\u003c\/td\u003e\n          \u003ctd\u003e5.5HP\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n          \u003ctd\u003e19210-881-003\u003c\/td\u003e\n          \u003ctd\u003e-\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eHonda\u003c\/td\u003e\n          \u003ctd\u003eBF6B-BX-D6\u003c\/td\u003e\n          \u003ctd\u003e6HP\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n          \u003ctd\u003e19210-881-003\u003c\/td\u003e\n          \u003ctd\u003e-\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eHonda\u003c\/td\u003e\n          \u003ctd\u003eBF75 (7.5HP models)\u003c\/td\u003e\n          \u003ctd\u003e7.5HP\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n          \u003ctd\u003e19210-881-003\u003c\/td\u003e\n          \u003ctd\u003eModels A-B-C-D-E-F\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eHonda\u003c\/td\u003e\n          \u003ctd\u003eBF8AH-AK-AM-AX-B-BX\u003c\/td\u003e\n          \u003ctd\u003e8HP\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n          \u003ctd\u003e19210-881-003\u003c\/td\u003e\n          \u003ctd\u003e-\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eHonda\u003c\/td\u003e\n          \u003ctd\u003eBF100 (10HP models)\u003c\/td\u003e\n          \u003ctd\u003e10HP\u003c\/td\u003e\n          \u003ctd\u003e4-Stroke\u003c\/td\u003e\n          \u003ctd\u003e\u003c\/td\u003e\n          \u003ctd\u003e19210-881-003\u003c\/td\u003e\n          \u003ctd\u003eModels A-B-C-D-E-F\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\u003c\/dd\u003e\n    \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect OEM replacement\u003c\/dd\u003e\n    \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eRubber\/Neoprene compound\u003c\/dd\u003e\n    \u003cdt\u003eHousing Color\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n    \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003eInner diameter (C): 14.20mm, Outer diameter (A): 41.00mm, Height (B): 23.00mm\u003c\/dd\u003e\n    \u003cdt\u003eOther Technical Attributes\u003c\/dt\u003e\n\u003cdd\u003eHigh quality aftermarket impeller manufactured to OEM specifications\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\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Water Pump Impeller (19210-881-003\/19210-881-A01\/19210-881-A02)\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 engine kill switch lanyard for safety.\u003c\/li\u003e\n    \u003cli\u003ePlace the engine in neutral and remove the lower unit (gearcase) by unbolting it from the engine leg.\u003c\/li\u003e\n    \u003cli\u003eLocate and remove the bolts securing the water pump housing cover.\u003c\/li\u003e\n    \u003cli\u003eTake note of the rotational direction of the old impeller's vanes before removing it.\u003c\/li\u003e\n    \u003cli\u003eSlide the old impeller off the driveshaft, removing the drive key as well.\u003c\/li\u003e\n    \u003cli\u003eClean any debris from the housing interior and inspect it for wear or damage.\u003c\/li\u003e\n    \u003cli\u003eLightly lubricate the new impeller and the inside of the housing with marine grease.\u003c\/li\u003e\n    \u003cli\u003eInstall the drive key, then slide the new impeller onto the shaft while turning it clockwise to bed the vanes correctly.\u003c\/li\u003e\n    \u003cli\u003eRe-install the water pump housing and torque its bolts to the manufacturer's specification.\u003c\/li\u003e\n    \u003cli\u003eRe-attach the lower unit to the engine, ensuring the driveshaft and water tube align correctly.\u003c\/li\u003e\n    \u003cli\u003eOnce assembled, start the engine in water and verify a steady stream from the cooling system's tell-tale outlet.\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 do I know if this impeller fits my Honda outboard?\u003c\/summary\u003e\n    \u003cp\u003eThis impeller is designed for specific Honda 4HP to 10HP 4-stroke models. Please review the 'Engine \u0026amp; Model Compatibility' table and cross-reference your engine's model code and the OEM part number (19210-881-003). Matching these details ensures correct fitment.\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 of a worn or damaged impeller include the engine overheating at idle or low speeds, a weak or intermittent water stream from the \"telltale\" pisser outlet, and, upon inspection, visible cracks, stiffness, or missing vanes on the impeller itself.\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 replace the water pump impeller every one to two years, or every 100-200 hours of operation. Frequent use in saltwater or sandy\/silty conditions may require more frequent changes.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this a difficult part to install?\u003c\/summary\u003e\n    \u003cp\u003eInstallation requires basic mechanical skills and tools to remove the lower unit. While it can be a DIY job for many boat owners, we recommend professional installation if you are not comfortable performing this type of service.\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":50723976184123,"sku":"17IH001","price":13.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/17IH0011_ac78f126-1ae9-4d1c-ae07-235e4134a06d.jpg?v=1763039015","url":"https:\/\/seasierra.com\/products\/water-pump-impeller-fits-honda-marine-4hp-10hp-outboards-replaces-honda-19210-881-003-19210-881-a01-19210-881-a02","provider":"SeaSierra","version":"1.0","type":"link"}