{"title":"Indmar 4-Stroke 300HP Marine Engine Parts","description":"\u003csection id=\"hero\" style=\"padding:16px 0;\"\u003e\n  \u003cp style=\"max-width:880px;\"\u003e\n    This page is tailored for Indmar 4‑Stroke 300HP marine engines. Use it to quickly find compatible parts and service information, including maintenance tips, commonly replaced components, and troubleshooting guidance. You can also browse our main Indmar-related service categories and general engine parts. Scroll to the bottom of this page to start browsing parts for this engine, and remember that on the collection pages you can use the Filter \u0026amp; Sort controls to narrow results by horsepower, year range, and part category.\n  \u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\" style=\"display:inline-block;padding:10px 16px;border:1px solid #1a73e8;border-radius:6px;text-decoration:none;color:#1a73e8;\"\u003eShop Service \u0026amp; Maintenance Kits\u003c\/a\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"padding:16px 0;\"\u003e\n  \u003ch2\u003eHow to Identify Your 300HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eLocate the engine identification tag or serial plate on the engine block (often near the bellhousing, intake manifold area, or timing cover). Photograph this plate for reference.\u003c\/li\u003e\n    \u003cli\u003eRecord the full model\/serial number and any ECM calibration labels; these help distinguish 6.0L GM‑based vs 6.2L Ford‑based Indmar variants and determine exact parts.\u003c\/li\u003e\n    \u003cli\u003eCheck emissions and catalyst labels on the exhaust components; engines with catalytic converters often use specific O2 sensors, manifolds, and gaskets.\u003c\/li\u003e\n    \u003cli\u003eNote cooling layout (raw‑water pump location, heat exchanger presence) and accessory drive (serpentine belt routing) to match pumps, belts, and brackets.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\" style=\"padding:16px 0;\"\u003e\n  \u003ch2\u003ePlatform Overview\u003c\/h2\u003e\n\n  \u003ch3\u003eGM Gen IV 6.0L\/LS‑based V8 (approx. 300 HP)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%;max-width:980px;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;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;border-bottom:1px solid #eee;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eV8 4‑stroke, EFI; raw‑water cooled or heat‑exchanger cooled depending on installation.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eIndmar 6.0L GM‑based V8 variants in tow\/wake boats; some with 160°F thermostat calibrations.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eBroad torque curve, strong mid‑range, widely supported service parts.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eThermostats, sensors, and exhaust components vary by emission setup; verify by serial\/ECM label.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eFord 6.2L V8 (approx. 300 HP)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%;max-width:980px;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;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;border-bottom:1px solid #eee;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eV8 4‑stroke, EFI; many applications feature catalytic exhaust and O2 sensors.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eIndmar 6.2L Ford‑based V8 variants in tow\/wake boats; components differ from GM‑based engines.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eStrong low‑end torque and refined drivability; modern emissions hardware on many units.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eOil cap specs, thermostat ratings, sensors, and manifolds are engine‑family specific—confirm before ordering.\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\" style=\"padding:16px 0;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp style=\"max-width:880px;\"\u003eIntervals below are general guidelines for 4‑stroke inboard marine engines. Always follow your official Indmar service manual and boat manufacturer recommendations.\u003c\/p\u003e\n  \u003ctable style=\"width:100%;max-width:980px;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;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;border-bottom:1px solid #eee;\"\u003eEngine oil + filter\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eUse marine‑rated oil meeting OEM spec; change at season start if storage was long.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/oil-filters\"\u003eOil Filters\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eRaw‑water pump impeller\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eInspect each season; replace 100 hours\/annual\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eReplace sooner if overheat alarms, weak tell‑tale, or damaged vanes are observed.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/water-pumps\"\u003eWater Pumps\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eFuel filter \/ water separator\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eReplace more frequently with ethanol fuel or if contamination is suspected.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\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;border-bottom:1px solid #eee;\"\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eInspect 100 hours; replace 100–200 hours\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eUse the heat range and gap specified for your exact engine family.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\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;border-bottom:1px solid #eee;\"\u003eAnodes (engine\/heat exchanger)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eInspect monthly; replace at ~50% loss\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eChoose zinc, aluminum, or magnesium based on water type (salt, brackish, fresh).\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\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;border-bottom:1px solid #eee;\"\u003eSerpentine\/drive belt\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eInspect each season; replace as needed\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eLook for glazing, cracks, or belt dust; verify tensioner operation.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/belt\"\u003eBelts\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eThermostat\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eInspect every 2 seasons; replace 2–3 years\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eCorrect temp rating is engine‑family specific; replace if overheating or slow warm‑up occurs.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/gaskets\"\u003eGaskets\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCharging system (alternator output)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCheck each season\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eVerify voltage at idle and cruise RPM; inspect wiring and connectors.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/alternators\"\u003eAlternators\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\" style=\"padding:16px 0;\"\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\/water-pumps\"\u003eWater Pumps\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\/spark-plug\"\u003eSpark Plugs\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCharging – \u003ca href=\"https:\/\/seasierra.com\/collections\/alternators\"\u003eAlternators\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eExhaust \/ Sealing – \u003ca href=\"https:\/\/seasierra.com\/collections\/manifolds\"\u003eManifolds\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/gaskets\"\u003eGaskets\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eEngine Management – \u003ca href=\"https:\/\/seasierra.com\/collections\/sensors\"\u003eSensors\u003c\/a\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\" style=\"padding:16px 0;\"\u003e\n  \u003ch2\u003eCommon Symptoms \u0026amp; Quick Checks\u003c\/h2\u003e\n  \u003ctable style=\"width:100%;max-width:980px;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;padding:8px;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #ddd;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;border-bottom:1px solid #eee;\"\u003eOverheat alarm or weak water stream\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eInspect intake strainer for debris, raw‑water pump impeller condition, hose kinks, and thermostat operation.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eWater pump impeller kit, hoses, thermostat, anodes.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eHard starting or rough idle\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eVerify battery voltage, fuel quality, and replace fuel filter\/water separator; check spark plugs and vacuum leaks.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eFuel filter, spark plugs, intake gaskets, sensors.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003ePoor acceleration or power loss\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eCheck for fouled prop\/drag, restricted fuel delivery, misfires, and exhaust restrictions; read fault codes if equipped.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #eee;\"\u003eFuel filter, injectors, spark plugs, exhaust manifolds, O2 sensors.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eLow voltage or charging warning\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect belt condition\/tension, alternator output, wiring, and grounds.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eSerpentine belt, alternator, connectors.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"faq\" style=\"padding:16px 0;\"\u003e\n  \u003ch2\u003eFAQs\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre parts interchangeable between 6.0L GM‑based and 6.2L Ford‑based Indmar engines?\u003c\/summary\u003e\n    \u003cp\u003eSome hardware overlaps, but many components differ (thermostats, sensors, manifolds, belts, and even oil caps). Always confirm by engine serial number and ECM\/emissions labels before ordering.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should the raw‑water impeller be replaced?\u003c\/summary\u003e\n    \u003cp\u003eAs a rule of thumb, replace it every 100 hours or annually—sooner if you see temperature spikes, weak water flow, or damaged vanes during inspection.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should I change engine oil and filter?\u003c\/summary\u003e\n    \u003cp\u003eTypically every 100 hours or once per season. If the boat sees short runs or extended storage, change at the start of the season regardless of hours.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat information helps confirm part compatibility?\u003c\/summary\u003e\n    \u003cp\u003eProvide engine serial\/model numbers, year, engine family (6.0L GM vs 6.2L Ford), any ECM\/emissions labels, and clear photos of the existing part and mounting location.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"padding:16px 0;\"\u003e\n  \u003cp style=\"max-width:880px;\"\u003eReady to find the right components? Browse our engine service categories and filter by what you need. Start with service kits, then drill into filters, plugs, pumps, and more.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\" style=\"display:inline-block;padding:10px 16px;border:1px solid #1a73e8;border-radius:6px;text-decoration:none;color:#1a73e8;\"\u003eBrowse Service \u0026amp; Maintenance Kits\u003c\/a\u003e\n  \u003cp style=\"margin-top:8px;color:#555;\"\u003eIf you’re unsure about your model, send us a photo of the engine nameplate and the part you need and we’ll help verify compatibility.\u003c\/p\u003e\n\u003c\/section\u003e","products":[{"product_id":"impeller-repair-kit-fits-volvo-penta-3-0-8-1l-gas-engines-replaces-21213664-3584350-3588914","title":"Aftermarket Impeller Repair Kit for Volvo Penta 3.0–8.1L Gas Engines — Replaces 21213664, 3584350 and 3588914","description":"\u003csection\u003e\n\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 { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n  table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n  @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eaftermarket impeller repair kit\u003c\/strong\u003e is intended for servicing the raw-water cooling pump on selected Volvo Penta V6 and V8 gasoline engines, including applications in the 3.0L, 4.3L, 5.0L, 5.7L and 8.1L displacement ranges. Replacing a worn or damaged impeller can help restore proper water circulation and cooling-system performance.\u003c\/p\u003e\n\u003cp\u003eThe impeller is listed as a replacement for Volvo Penta part numbers \u003cstrong\u003e21213664\u003c\/strong\u003e, \u003cstrong\u003e3584350\u003c\/strong\u003e and \u003cstrong\u003e3588914\u003c\/strong\u003e. Additional aftermarket and manufacturer references are provided below as cross-reference leads. Always compare the engine model, pump configuration, existing part number and impeller dimensions before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSpline-drive installation for compatible raw-water pump applications.\u003c\/li\u003e\n  \u003cli\u003eNeoprene rubber impeller with a brass hub.\u003c\/li\u003e\n  \u003cli\u003eService kit includes the impeller, O-ring and gasket.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse the following references to help identify a comparable replacement. A number match alone does not confirm fitment for every engine or pump configuration.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e21213664\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e3584350\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e3588914\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e3841696\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e3842786\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e21951354\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJohnson\u003c\/td\u003e\n\u003ctd\u003e09-812B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJohnson\u003c\/td\u003e\n\u003ctd\u003e09-812B-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJabsco\u003c\/td\u003e\n\u003ctd\u003e13554-0001\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYamaha\u003c\/td\u003e\n\u003ctd\u003e6TA-12457-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3306\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndmar\u003c\/td\u003e\n\u003ctd\u003eS685007\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYanmar\u003c\/td\u003e\n\u003ctd\u003e119773-42600\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\u003eThe applications below reflect the stated cross-reference range for compatible raw-water pump configurations. Model years, serial numbers, pump housings and shaft arrangements can vary, so confirm the complete application before installation.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Engine and Model Compatibility\"\u003e\n\u003cthead\u003e\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\u003eReference Part No.\u003c\/th\u003e\n\u003cth\u003eApplication Notes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e3.0GL, 3.0GS\u003c\/td\u003e\n\u003ctd\u003e130–140\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e21213664, 3584350\u003c\/td\u003e\n\u003ctd\u003eRaw-water pump applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e4.3GL, 4.3GS, 4.3GXi\u003c\/td\u003e\n\u003ctd\u003e180–225\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e21213664, 3588914\u003c\/td\u003e\n\u003ctd\u003eRaw-water pump applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e5.0GL, 5.0GXi\u003c\/td\u003e\n\u003ctd\u003e220–270\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e21213664, 3588914\u003c\/td\u003e\n\u003ctd\u003eRaw-water pump applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e5.7GL, 5.7GS, 5.7GXi\u003c\/td\u003e\n\u003ctd\u003e250–320\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e21213664, 3588914\u003c\/td\u003e\n\u003ctd\u003eRaw-water pump applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e8.1Gi, 8.1GXi\u003c\/td\u003e\n\u003ctd\u003e375–420\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e21213664, 3588914\u003c\/td\u003e\n\u003ctd\u003eRaw-water pump applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndmar\u003c\/td\u003e\n\u003ctd\u003eMonsoon\u003c\/td\u003e\n\u003ctd\u003e320–350\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003eS685007\u003c\/td\u003e\n\u003ctd\u003eListed for selected 320–350 HP configurations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eRaw-water pump impeller service kit\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eSpline drive\u003c\/dd\u003e\n  \u003cdt\u003eHub Material\u003c\/dt\u003e\n\u003cdd\u003eBrass\u003c\/dd\u003e\n  \u003cdt\u003eImpeller Material\u003c\/dt\u003e\n\u003cdd\u003eNeoprene rubber\u003c\/dd\u003e\n  \u003cdt\u003eOutside Diameter\u003c\/dt\u003e\n\u003cdd\u003e57 mm (2-1\/4 in)\u003c\/dd\u003e\n  \u003cdt\u003eWidth\u003c\/dt\u003e\n\u003cdd\u003e48.3 mm (1-15\/16 in)\u003c\/dd\u003e\n  \u003cdt\u003eNumber of Blades\u003c\/dt\u003e\n\u003cdd\u003e12\u003c\/dd\u003e\n  \u003cdt\u003eCenter Bore\u003c\/dt\u003e\n\u003cdd\u003e14.5 mm\u003c\/dd\u003e\n  \u003cdt\u003eColor\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n  \u003cdt\u003ePackage Contents\u003c\/dt\u003e\n\u003cdd\u003e1 impeller, 1 O-ring and 1 gasket\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 × Impeller\u003c\/strong\u003e — neoprene rubber with brass hub; listed as a replacement for Volvo Penta 21213664\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003e1 × O-ring\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003e1 × Gasket\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eClose the seacock or water-intake valve and allow the engine to cool before servicing.\u003c\/li\u003e\n  \u003cli\u003eAccess the raw-water pump and remove the cover-plate screws.\u003c\/li\u003e\n  \u003cli\u003eRemove the old impeller with suitable pliers or an impeller puller, taking note of the vane direction.\u003c\/li\u003e\n  \u003cli\u003eClean debris from the pump housing and inspect the housing, cover plate and key or drive interface for wear or damage.\u003c\/li\u003e\n  \u003cli\u003eLightly lubricate the replacement impeller and the inside of the pump housing with a suitable water-based marine lubricant.\u003c\/li\u003e\n  \u003cli\u003eInstall the impeller with the vanes oriented in the same direction as the original, unless the pump manufacturer specifies otherwise.\u003c\/li\u003e\n  \u003cli\u003eFit the new gasket and O-ring in their correct locations.\u003c\/li\u003e\n  \u003cli\u003eReinstall the cover plate and tighten the screws evenly in a crisscross pattern.\u003c\/li\u003e\n  \u003cli\u003eOpen the seacock, start the engine and check immediately for leaks, overheating and proper water discharge.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I confirm that this impeller fits my engine?\u003c\/summary\u003e\u003cp\u003eCompare your engine brand, model, horsepower, stroke, pump configuration and existing part number with the information on this page. Also compare the impeller dimensions and drive interface with the removed part. If the model year or serial-number range is not shown, consult the engine or pump manufacturer before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are common signs of a failing impeller?\u003c\/summary\u003e\u003cp\u003eSymptoms can include engine overheating at idle or low speed, reduced water discharge, damaged or missing vanes, cracking, hardening or visible wear. Inspect the pump and replace the impeller if it has run dry or shows damage.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should an impeller be inspected or replaced?\u003c\/summary\u003e\u003cp\u003eInspect the impeller at least annually and replace it according to the engine or pump manufacturer’s maintenance schedule. Frequent operation in sandy, silty or debris-laden water may require more frequent service.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat lubricant should be used during installation?\u003c\/summary\u003e\u003cp\u003eUse a water-based marine lubricant or a small amount of dish soap to help the impeller enter the housing. Avoid petroleum-based grease unless it is specifically approved for neoprene impellers.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eAre there exceptions to the listed fitment?\u003c\/summary\u003e\u003cp\u003eYes. Similar engine models may use different pump housings, drive arrangements or impeller dimensions. The listed references and dimensions should be treated as application-identification information, not as a substitute for checking the complete engine and pump configuration.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\u003cp\u003eNo. This is an aftermarket replacement service kit. The manufacturer names and part numbers shown on this page are used only to identify intended applications and cross-reference references.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the shipping and return terms?\u003c\/summary\u003e\u003cp\u003eShipping availability, delivery time, warranty coverage and returns are determined by the applicable store policies shown at checkout. Contact customer support before installation if the supplied parts do not match the ordered application.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the engine model, model year or serial range where applicable, pump configuration, dimensions and reference number before purchase.\u003c\/li\u003e\n  \u003cli\u003eClose the water intake and allow the engine to cool before beginning service.\u003c\/li\u003e\n  \u003cli\u003eDo not operate the engine without an adequate water supply; a dry-running impeller can be damaged quickly.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended when the pump, cooling system or engine configuration is uncertain.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMarine Replacement Parts\u003c\/strong\u003e — Service components for selected recreational and marine engine applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Listings\u003c\/strong\u003e — Reference numbers, dimensions and installation information are provided to support part identification.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCustomer Support\u003c\/strong\u003e — Contact support with your engine and pump details if you need help confirming an application before installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718268227899,"sku":"XR17FI015","price":25.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/XR17FI015.png?v=1762958623"},{"product_id":"sherwood-major-repair-kit-with-10615-impeller-fits-sherwood-p102-p105-p109-p110-pumps-replaces-sherwood-19354-19354-shw-23977","title":"Sherwood Major Repair Kit with 10615 Impeller – Fits Sherwood P102, P105 and P109 Pumps (Replaces Sherwood 19354)","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 { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n  table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n  @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eSherwood Major Repair Kit with 10615 Impeller\u003c\/strong\u003e provides the wear components needed to rebuild selected Sherwood crank-driven raw-water pumps. It is designed for Sherwood pump models \u003cstrong\u003eP102, P105 and P109\u003c\/strong\u003e, which are used in a range of inboard marine applications.\u003c\/p\u003e\n\u003cp\u003eThe kit is a replacement for the Sherwood \u003cstrong\u003e19354\u003c\/strong\u003e major repair kit reference. Confirm the pump model, cover style and component arrangement before ordering, especially when servicing an older pump or a pump that has previously been rebuilt.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Mechanical raw-water pump rebuild.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImpeller:\u003c\/strong\u003e Includes a 12-blade 10615 impeller.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Sherwood P102, P105 and P109 pump models.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGasket note:\u003c\/strong\u003e The supplied end-cover gasket is intended for the applicable later-style pump configuration; compare it with the gasket or O-ring removed from your pump.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePart Number Reference\u003c\/h2\u003e\n\u003cp\u003eUse the following reference to compare the kit with the applicable Sherwood pump-repair listing. Part-number references do not replace verification of the pump model and cover configuration.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Reference\"\u003e\n    \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eReference\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSherwood\u003c\/td\u003e\n\u003ctd\u003e19354\u003c\/td\u003e\n\u003ctd\u003eMajor repair kit reference\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSherwood\u003c\/td\u003e\n\u003ctd\u003e10615\u003c\/td\u003e\n\u003ctd\u003eImpeller reference included with this kit\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eMarine raw-water pump major repair kit\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eMechanical\u003c\/dd\u003e\n  \u003cdt\u003eImpeller\u003c\/dt\u003e\n\u003cdd\u003e10615, 12-blade marine impeller\u003c\/dd\u003e\n  \u003cdt\u003eImpeller Material\u003c\/dt\u003e\n\u003cdd\u003eNeoprene\u003c\/dd\u003e\n  \u003cdt\u003eShaft Connection\u003c\/dt\u003e\n\u003cdd\u003e5\/8 in (16 mm)\u003c\/dd\u003e\n  \u003cdt\u003eDrive Type\u003c\/dt\u003e\n\u003cdd\u003e3\/16 in key drive\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Cam\u003c\/li\u003e\n\u003cli\u003e1 x Cam screw\u003c\/li\u003e\n\u003cli\u003e1 x Cam screw washer\u003c\/li\u003e\n\u003cli\u003e2 x Bearings\u003c\/li\u003e\n\u003cli\u003e1 x Small external retaining ring\u003c\/li\u003e\n\u003cli\u003e1 x Large internal retaining ring\u003c\/li\u003e\n\u003cli\u003e1 x Key\u003c\/li\u003e\n\u003cli\u003e1 x Lip seal\u003c\/li\u003e\n\u003cli\u003e1 x 10615 impeller\u003c\/li\u003e\n\u003cli\u003e1 x O-ring\u003c\/li\u003e\n\u003cli\u003e1 x End-cover gasket for the applicable later-style pump configuration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect the vessel battery and close the raw-water intake seacock.\u003c\/li\u003e\n\u003cli\u003ePlace a catch pan under the pump and drain remaining water by loosening the hoses as needed.\u003c\/li\u003e\n\u003cli\u003eRemove the pump end-cover screws, cover and old gasket or O-ring.\u003c\/li\u003e\n\u003cli\u003eCarefully remove the old impeller. Use an impeller puller if necessary and avoid damaging the pump housing.\u003c\/li\u003e\n\u003cli\u003eInspect the housing, shaft and cover for scoring, corrosion or other damage. Clean all mating surfaces thoroughly.\u003c\/li\u003e\n\u003cli\u003eReplace the lip seal, bearings and retaining rings with the supplied components.\u003c\/li\u003e\n\u003cli\u003eApply a small amount of non-petroleum-based lubricant, such as silicone lubricant or soapy water, to the impeller and housing.\u003c\/li\u003e\n\u003cli\u003eInstall the impeller with a twisting motion in the direction of shaft rotation. Do not force it onto the shaft; it must move freely for the pump to prime correctly.\u003c\/li\u003e\n\u003cli\u003eInstall the key, cam and cam-screw components.\u003c\/li\u003e\n\u003cli\u003eFit the correct new gasket or O-ring and securely fasten the end cover.\u003c\/li\u003e\n\u003cli\u003eReconnect the hoses, open the seacock fully and reconnect the battery.\u003c\/li\u003e\n\u003cli\u003eAfter starting the engine, immediately check the pump and hose connections for leaks and confirm normal raw-water flow.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat Sherwood pump models does this kit fit?\u003c\/summary\u003e\u003cp\u003eThis major repair kit is listed for Sherwood raw-water pump models P102, P105 and P109. Verify the pump identification and cover configuration before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes this kit fit every P102, P105 or P109 pump?\u003c\/summary\u003e\u003cp\u003eNot necessarily. Pump revisions may use different covers, gaskets or internal arrangements. Compare the supplied gasket or O-ring, key, cam and other components with your existing pump before installation.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat impeller is included?\u003c\/summary\u003e\u003cp\u003eThe kit includes a 10615 12-blade impeller. The impeller reference should not be confused with a complete major repair kit.\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 higher-than-normal engine temperature, reduced water flow from the exhaust, damaged or missing impeller blades, and water leakage from the pump housing or seal area.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow should the new impeller be lubricated?\u003c\/summary\u003e\u003cp\u003eUse a non-petroleum-based lubricant, such as silicone lubricant or soapy water. Do not force the impeller onto the shaft, and do not use petroleum-based grease on the neoprene impeller.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhen should the impeller be replaced?\u003c\/summary\u003e\u003cp\u003eInspect the impeller during routine pump maintenance and replace it when blades show tearing, cracking, distortion or other damage. Replacement intervals depend on operating hours, water conditions and storage practices.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM Sherwood part?\u003c\/summary\u003e\u003cp\u003eThis listing is for an aftermarket replacement repair kit, not a genuine OEM Sherwood kit. Sherwood and the referenced part numbers are used only to identify the applicable pump and replacement references.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the shipping speed and cost?\u003c\/summary\u003e\u003cp\u003eTypical international transit is 5–15 days. Standard shipping is free to most regions; available expedited options and charges are shown at checkout.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\u003cp\u003eThis product is covered by a 1-year warranty against manufacturing defects under normal use. Returns are accepted within the standard return period for unused items in their original condition. Contact support for return instructions.\u003c\/p\u003e\u003c\/details\u003e\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eConfirm the pump model and compare the new components with the original parts before installation.\u003c\/li\u003e\n\u003cli\u003eClose the seacock and disconnect the battery before servicing the raw-water pump.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement kit, not a genuine OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended when pump, shaft or housing damage is present.\u003c\/li\u003e\n\u003c\/ul\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 replacement parts selected for dependable service in real-world conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Standard delivery is available to most regions, with shipping options shown at checkout.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing and practical replacement solutions for marine maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723798712635,"sku":"21FIK013-G","price":61.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/21FIK013-G.png?v=1763032080"}],"url":"https:\/\/seasierra.com\/collections\/indmar-4-stroke-300hp-marine-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}