{"product_id":"water-pump-impeller-o-ring-fits-honda-8hp-9-9hp-10hp-4-stroke-replaces-91301-zg3-000","title":"Water Pump Impeller O-Ring – Fits Honda 8HP 9.9HP 10HP 4-Stroke (Replaces 91301-ZG3-000)","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\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eWater Pump Impeller O-Ring – Fits Honda 8HP 9.9HP 10HP 4-Stroke (Replaces 91301-ZG3-000)\u003c\/strong\u003e is an essential seal component for Honda 4-stroke outboard engines ranging from 8 to 10 horsepower. Designed to fit BF8D, BFP8D, BF9.9D, BFP9.9D, BF10D, BF10B, BFP10D, and BFP10B models spanning 2002–2006 and all years for 10HP variants, this o-ring ensures proper sealing within the water pump assembly to prevent leaks and maintain optimal cooling performance.\u003c\/p\u003e\n\n\u003cp\u003eThis aftermarket replacement directly supersedes Honda OEM part number 91301-ZG3-000.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eDirect fit for Honda 4-stroke outboards 8–10 HP\u003c\/li\u003e\n  \u003cli\u003eCritical seal for water pump impeller housing integrity\u003c\/li\u003e\n  \u003cli\u003eCompatible with BF and BFP series engines\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\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\u003eHonda\u003c\/td\u003e\n        \u003ctd\u003e91301-ZG3-000\u003c\/td\u003e\n        \u003ctd\u003eOEM 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\/year in the table below.\u003c\/p\u003e\n\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      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHonda\u003c\/td\u003e\n        \u003ctd\u003eBF8D\u003c\/td\u003e\n        \u003ctd\u003e8\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2002–2006, K0, K2, K3\u003c\/td\u003e\n        \u003ctd\u003e91301-ZG3-000\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHonda\u003c\/td\u003e\n        \u003ctd\u003eBFP8D\u003c\/td\u003e\n        \u003ctd\u003e8\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2002–2006, K0, K2, K3\u003c\/td\u003e\n        \u003ctd\u003e91301-ZG3-000\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHonda\u003c\/td\u003e\n        \u003ctd\u003eBF9.9D\u003c\/td\u003e\n        \u003ctd\u003e9.9\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2002–2006, K0, K2, K3\u003c\/td\u003e\n        \u003ctd\u003e91301-ZG3-000\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHonda\u003c\/td\u003e\n        \u003ctd\u003eBFP9.9D\u003c\/td\u003e\n        \u003ctd\u003e9.9\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e2002–2006, K0, K2, K3\u003c\/td\u003e\n        \u003ctd\u003e91301-ZG3-000\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHonda\u003c\/td\u003e\n        \u003ctd\u003eBF10D\u003c\/td\u003e\n        \u003ctd\u003e10\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eAll years\u003c\/td\u003e\n        \u003ctd\u003e91301-ZG3-000\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHonda\u003c\/td\u003e\n        \u003ctd\u003eBF10B\u003c\/td\u003e\n        \u003ctd\u003e10\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eAll years\u003c\/td\u003e\n        \u003ctd\u003e91301-ZG3-000\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHonda\u003c\/td\u003e\n        \u003ctd\u003eBFP10D\u003c\/td\u003e\n        \u003ctd\u003e10\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eAll years\u003c\/td\u003e\n        \u003ctd\u003e91301-ZG3-000\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eHonda\u003c\/td\u003e\n        \u003ctd\u003eBFP10B\u003c\/td\u003e\n        \u003ctd\u003e10\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003eAll years\u003c\/td\u003e\n        \u003ctd\u003e91301-ZG3-000\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\u003eOEM Reference\u003c\/dt\u003e\n  \u003cdd\u003e91301-ZG3-000\u003c\/dd\u003e\n  \u003cdt\u003ePart Type\u003c\/dt\u003e\n  \u003cdd\u003eWater Pump Impeller O-Ring\u003c\/dd\u003e\n  \u003cdt\u003eFitment\u003c\/dt\u003e\n  \u003cdd\u003eHonda 4-Stroke Outboards 8–10 HP\u003c\/dd\u003e\n  \u003cdt\u003eMaterial\u003c\/dt\u003e\n  \u003cdd\u003eMarine-grade elastomer\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1 × O-Ring\u003c\/strong\u003e (91301-ZG3-000)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect fuel line and remove engine cowling to access the lower unit.\u003c\/li\u003e\n  \u003cli\u003eDrain the lower unit gear oil completely and remove the lower unit from the midsection.\u003c\/li\u003e\n  \u003cli\u003eRemove the water pump housing by unfastening the retaining bolts.\u003c\/li\u003e\n  \u003cli\u003eCarefully remove the old impeller and associated o-rings from the housing.\u003c\/li\u003e\n  \u003cli\u003eInspect the housing and pump cavity for debris, scoring, or corrosion; clean thoroughly.\u003c\/li\u003e\n  \u003cli\u003eLubricate the new o-ring with marine grease to ease installation and ensure proper sealing.\u003c\/li\u003e\n  \u003cli\u003eInstall the new o-ring into the designated groove, ensuring it seats evenly without twisting.\u003c\/li\u003e\n  \u003cli\u003eReassemble the impeller, housing, and lower unit in reverse order, torquing fasteners to manufacturer specifications.\u003c\/li\u003e\n  \u003cli\u003eRefill the lower unit with the correct marine gear oil and test for leaks before returning the engine to service.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow do I know if my water pump o-ring needs replacement?\u003c\/summary\u003e\n  \u003cp\u003eSigns include visible coolant leaks around the water pump housing, overheating engine, weak telltale stream, or visible cracking and hardening of the existing o-ring during routine maintenance.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n  \u003csummary\u003eCan I reuse the old o-ring during impeller replacement?\u003c\/summary\u003e\n  \u003cp\u003eNo. O-rings are single-use seal components that compress and deform during installation. Reusing an old o-ring significantly increases the risk of coolant leaks and impeller failure.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n  \u003csummary\u003eWhat happens if the o-ring is installed dry?\u003c\/summary\u003e\n  \u003cp\u003eInstalling without lubrication can cause the o-ring to twist, pinch, or tear during reassembly, leading to immediate or premature seal failure and potential engine overheating.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n  \u003csummary\u003eIs this o-ring compatible with both BF and BFP Honda series?\u003c\/summary\u003e\n  \u003cp\u003eYes. This o-ring fits both standard BF and power-trim BFP models within the 8–10 HP 4-stroke range, as specified in the compatibility table above.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n  \u003csummary\u003eHow often should the water pump o-ring be replaced?\u003c\/summary\u003e\n  \u003cp\u003eReplace the o-ring every time you service the water pump impeller, typically every 2–3 years or 200–300 hours of operation, whichever comes first.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n  \u003csummary\u003eWhat is the difference between OEM and aftermarket o-rings?\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\n\u003cdetails\u003e\n  \u003csummary\u003eHow fast will my order ship, and what does it 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\n\u003cdetails\u003e\n  \u003csummary\u003eWhat warranty and return options are available?\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\u003cdetails\u003e\n  \u003csummary\u003eWill this o-ring work if my engine year is not listed?\u003c\/summary\u003e\n  \u003cp\u003eCross-check your engine's service manual or parts diagram with OEM part number 91301-ZG3-000. If your manual references this number, the o-ring will fit regardless of year.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify images\/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, 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","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":51025817665851,"sku":"2539","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/12_2eceb0d6-543a-4616-a71c-29761e73189a.jpg?v=1772959744","url":"https:\/\/seasierra.com\/products\/water-pump-impeller-o-ring-fits-honda-8hp-9-9hp-10hp-4-stroke-replaces-91301-zg3-000","provider":"SeaSierra","version":"1.0","type":"link"}