{"title":"Volvo Penta 325HP 4-Stroke Marine Engine Parts","description":"\u003csection id=\"hero\" style=\"padding:16px; border:1px solid #e5e7eb; border-radius:8px;\"\u003e\n  \u003cp\u003eThis page is tailored for Volvo Penta 4-Stroke 325HP marine engines and helps you find compatible parts and service information. Below you’ll find maintenance tips, common replacement parts, and troubleshooting guidance. You can also browse the main Volvo Penta collection for a wider selection. 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.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-penta-parts\" style=\"display:inline-block; margin-top:8px; padding:10px 14px; background:#0a4; color:#fff; text-decoration:none; border-radius:6px;\"\u003eBrowse All Volvo Penta Parts\u003c\/a\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"padding:16px 0;\"\u003e\n  \u003ch2\u003eHow to Identify Your 325HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eLocate the identification plate: typically on the engine’s starboard side near the flame arrestor or rocker cover; the transom shield\/drive unit also has a product tag with its own serial.\u003c\/li\u003e\n    \u003cli\u003eRead the full model and serial: note the engine family (e.g., V8 series), fuel system (EFI), and any suffixes that indicate calibration, emissions, or revision.\u003c\/li\u003e\n    \u003cli\u003eRecord the sterndrive type: SX, DPS, or similar. Some parts (anodes, bellows, seals, gearcase items) depend on the drive model, not just engine horsepower.\u003c\/li\u003e\n    \u003cli\u003eConfirm key specs: shaft ratio and propeller type affect performance parts selection (propellers, anodes style) and should be verified before ordering.\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\u003eV8 EFI Gasoline Sterndrive (Approx. 5.7L)\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 #ddd; padding:6px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:6px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eV8 4-stroke gasoline, EFI\/TBI variants, raw- or closed-cooling depending on installation\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eV8 EFI families around 300–325 HP; exact calibration varies by year and emissions package\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eStrong mid-range torque, broad parts availability, straightforward maintenance\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:6px;\"\u003eCooling components and anodes may vary by sterndrive (SX vs. DPS). Match engine serial and drive model when selecting parts.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eV8 EFI Gasoline Sterndrive (Approx. 6.0–6.2L)\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 #ddd; padding:6px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:6px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eV8 4-stroke gasoline, multi-port EFI, electronic ignition, common outputs 300–350+ HP\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eLater V8 series around 320–350 HP; verify exact variant by serial and emissions label\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eImproved fuel efficiency and diagnostics, strong holeshot and cruise performance\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:6px;\"\u003eSensor sets and ECU calibrations differ by year. Match parts by engine serial and model family; propellers must match drive ratio and application.\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\u003eIntervals below are general guidelines for typical marine use. Always follow the official Volvo Penta service manual for your exact model, environment, and duty cycle.\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 #ddd; padding:6px;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:6px;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:6px;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:6px;\"\u003eParts Link\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eEngine oil + filter\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003e100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eUse marine-rated oil; change more often in severe service\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; 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:6px; border-bottom:1px solid #eee;\"\u003eGear oil (sterndrive)\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003e100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eInspect for water intrusion\/metal; replace seals if contamination is found\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-penta-parts\"\u003eVolvo Penta Parts\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003e300 hours or 3 years\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eGap and heat range per engine label\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; 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:6px; border-bottom:1px solid #eee;\"\u003eFuel filter \/ water separator\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003e100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eReplace sooner if fuel contamination or performance issues occur\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-penta-fuel-filters\"\u003eVolvo Penta Fuel Filters\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eRaw-water pump impeller \/ kit\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eEvery 2 years or 200 hours\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eInspect annually; replace immediately if overheated or cracked\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-penta-water-pump-repair-kits\"\u003eVolvo Penta Water Pump Repair Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eAnodes (zinc\/aluminum\/magnesium)\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eInspect every 3 months; replace at 50% depletion\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eChoose alloy for your water type (salt, brackish, fresh)\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-anodes\"\u003eVolvo Penta Anodes\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eSerpentine\/accessory belt\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eInspect each season; replace 2–3 years\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eReplace sooner if glazing, cracking, or squeal occurs\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; 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:6px;\"\u003eThermostat\u003c\/td\u003e\n        \u003ctd style=\"padding:6px;\"\u003eTest annually; replace 2–4 years\u003c\/td\u003e\n        \u003ctd style=\"padding:6px;\"\u003eStuck thermostats cause overheat or cold running\u003c\/td\u003e\n        \u003ctd style=\"padding:6px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-penta-parts\"\u003eVolvo Penta Parts\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\/volvo-penta-service-maintenance-kits\"\u003eVolvo Penta Service \u0026amp; Maintenance Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCooling System: \u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-penta-water-pumps\"\u003eVolvo Penta Water Pumps\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-penta-impellers\"\u003eVolvo Penta Impellers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eFuel System: \u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-penta-fuel-filters\"\u003eVolvo Penta Fuel Filters\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eIgnition \/ Electrical: \u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-penta-sensors\"\u003eVolvo Penta Sensors\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-penta-starters\"\u003eVolvo Penta Starters\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCorrosion Protection: \u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-anodes\"\u003eVolvo Penta Anodes\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePropulsion \/ Propellers: \u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-penta-propellers\"\u003eVolvo Penta Propellers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eGaskets \u0026amp; Seals: \u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-penta-gaskets\"\u003eVolvo Penta Gaskets\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%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:6px;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:6px;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:6px;\"\u003eRelated Parts\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eWeak water stream \/ overheat alarm\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eInspect seawater intake screen\/strainer, hoses, pump impeller, belt, thermostat\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eWater pump repair kit, impeller, thermostat, belts, anodes\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003ePoor acceleration \/ power loss\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eCheck prop condition\/pitch, fuel quality and filters, spark plugs, intake restrictions\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003ePropeller, fuel filter, spark plugs, sensors\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eHard starting \/ rough idle\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eVerify battery health, starter operation, fuel pressure, vacuum leaks, IAC\/MAP\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eStarters, fuel filters, sensors\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px;\"\u003eGearcase noise \/ metal in gear oil\u003c\/td\u003e\n        \u003ctd style=\"padding:6px;\"\u003eCheck gear oil level\/condition, prop shaft for fishing line, seals, gimbal bearing\u003c\/td\u003e\n        \u003ctd style=\"padding:6px;\"\u003eLower unit seal kit, propeller, bearings\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 different years or platforms?\u003c\/summary\u003e\n    \u003cp\u003eSome items carry over, but many vary by engine family, calibration, and sterndrive type. Always match by engine serial and drive model to ensure proper fit.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should the raw-water pump impeller be replaced?\u003c\/summary\u003e\n    \u003cp\u003eInspect annually and replace every 2 years or 200 hours, sooner after any overheat or if blades show set, cracks, or missing material.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should sterndrive gear oil be changed?\u003c\/summary\u003e\n    \u003cp\u003eTypically every 100 hours or once per season. Change immediately if you find water contamination or metallic debris.\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\u003eProvide the engine model and serial, sterndrive model\/serial (SX\/DPS), year range if known, and the specific component you’re replacing.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"padding:16px; border-top:1px solid #e5e7eb;\"\u003e\n  \u003cp\u003eReady to find parts by horsepower, year, and model? Browse our main Volvo Penta collection to filter and sort for what you need.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/volvo-penta-parts\" style=\"display:inline-block; margin-top:8px; padding:10px 14px; background:#0a4; color:#fff; text-decoration:none; border-radius:6px;\"\u003eShop Volvo Penta Parts\u003c\/a\u003e\n  \u003cp style=\"margin-top:8px; color:#555;\"\u003eIf you’re unsure about your model, send us a photo of the 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":"sea-water-pump-impeller-kit-fits-volvo-penta-3-0-8-1l-v6-v8-gas-engines-replaces-21213664-21700445","title":"Sea Water Pump Impeller for Volvo Penta Gas GM Engines 2005 and Newer – Replaces 21213664","description":"\u003c!-- Table Styles --\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:560px; }\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\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003esea water pump impeller\u003c\/strong\u003e is an aftermarket replacement for selected Volvo Penta gas engines using the impeller specified for OEM part number \u003cstrong\u003e21213664\u003c\/strong\u003e. It is identified in marine parts catalogs as a 12-fin neoprene impeller for gas GM engines from 2005 and newer.\u003c\/p\u003e\n\u003cp\u003eThis listing is for the \u003cstrong\u003eimpeller only\u003c\/strong\u003e. It is not a complete sea water pump assembly or an impeller service kit, so gaskets, O-rings, keys, plugs, grease, and other installation hardware are not included unless specifically stated below.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e12-fin neoprene impeller for marine cooling-water pump service.\u003c\/li\u003e\n\u003cli\u003eDesigned as a replacement for Volvo Penta OEM part number 21213664.\u003c\/li\u003e\n\u003cli\u003eSuitable for the listed Volvo Penta gas engine applications when the original impeller matches the referenced part number.\u003c\/li\u003e\n\u003cli\u003eInspect the pump cover, housing, shaft, seal, and related hardware before installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\u003cp\u003eUse the following references to compare your original impeller. Part-number matching is recommended before ordering.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Part Number Cross-Reference\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand or Source\u003c\/th\u003e\n\u003cth\u003eReference\u003c\/th\u003e\n\u003cth\u003eRelationship\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\u003ctd\u003eOEM reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-30778\u003c\/td\u003e\n\u003ctd\u003eAftermarket replacement reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRECMar\u003c\/td\u003e\n\u003ctd\u003eREC21213664\u003c\/td\u003e\n\u003ctd\u003eAftermarket replacement reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine Compatibility\u003c\/h2\u003e\n\u003cp\u003eCatalog references associate this impeller with selected Volvo Penta gas engines manufactured from 2005 onward. The application list below is provided as a model-family guide; confirm the OEM impeller number and pump configuration on your engine before purchase.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n\u003ctable class=\"ss-table\" aria-label=\"Compatible Engine Models\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eListed model applications\u003c\/th\u003e\n\u003cth\u003eEngine type\u003c\/th\u003e\n\u003cth\u003eYear condition\u003c\/th\u003e\n\u003cth\u003eReference\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\u003eAQ60F, AQ90, AQ95, AQ95A, AQ100, AQ110, AQ120; AQ130A\/B\/C\/D; AQ140A; AQ145A\/B; AQ151A\/B\/C; AQ165A; AQ170A\/B\/C; AQ171A\/C; AQ200B\/C; AQ225B\/C; AQ255A; BB100; BB115A\/B\/C; BB140A; BB145A; BB165A; BB170A\/B\/C; MB18\/F; MB20A\/B\/C\u003c\/td\u003e\n\u003ctd\u003eGasoline\u003c\/td\u003e\n\u003ctd\u003eVaries by model; listed catalog applications include 2005 and newer gas GM engines\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\u003e3.0GLP-J; 4.3GL-J\/JF, 4.3GXi-B\/BF\/C\/CF\/D\/DF\/E\/EF\/J\/JF, 4.3OSi-B\/BF\/C\/CF\/D\/DF\/E\/EF; 5.0GXi-J\/JF; 5.7Gi-300-J\/JF; 5.7GXi-J\/JF; 8.1Gi-J\/JF; 8.1GXi-J\/JF\u003c\/td\u003e\n\u003ctd\u003eGasoline\u003c\/td\u003e\n\u003ctd\u003e2005 and newer gas GM engine applications as cataloged\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\u003e3.0GL\/GS; 4.3GL\/GS\/GLM; 5.0FL\/Fi; 5.7GL\/Gi\/GIP; 5.8FL\/Fi\/FSi; 7.4GL; 8.2GLP; AQ200B\/C; AQ225B\/C; AQ255A\u003c\/td\u003e\n\u003ctd\u003eGasoline\u003c\/td\u003e\n\u003ctd\u003eApplication depends on the exact pump and engine configuration\u003c\/td\u003e\n\u003ctd\u003eVerify before ordering\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Model names alone do not confirm fitment. Match the original impeller's OEM number, dimensions, fin count, hub, and pump configuration before installation.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdl\u003e\n\u003cdt\u003eProduct type\u003c\/dt\u003e\n\u003cdd\u003eSea water pump impeller\u003c\/dd\u003e\n\u003cdt\u003eReplacement type\u003c\/dt\u003e\n\u003cdd\u003eAftermarket direct replacement for the referenced application\u003c\/dd\u003e\n\u003cdt\u003eMaterial\u003c\/dt\u003e\n\u003cdd\u003eNeoprene\u003c\/dd\u003e\n\u003cdt\u003eFin count\u003c\/dt\u003e\n\u003cdd\u003e12 fins\u003c\/dd\u003e\n\u003cdt\u003eOEM reference\u003c\/dt\u003e\n\u003cdd\u003eVolvo Penta 21213664\u003c\/dd\u003e\n\u003cdt\u003eAftermarket references\u003c\/dt\u003e\n\u003cdd\u003eSierra 18-30778; RECMar REC21213664\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Sea water pump impeller\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eGaskets, O-rings, keys, plugs, lubricant, and installation tools are not included with this impeller-only listing.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eStop the engine, allow it to cool, and close the cooling-water seacock before servicing the pump.\u003c\/li\u003e\n\u003cli\u003eRemove the pump cover and retain the screws and any reusable hardware.\u003c\/li\u003e\n\u003cli\u003eNote the direction of the existing impeller fins before removal.\u003c\/li\u003e\n\u003cli\u003eRemove the old impeller with suitable pliers or an impeller puller, taking care not to damage the housing or shaft.\u003c\/li\u003e\n\u003cli\u003eClean debris and old gasket material from the pump housing and cover.\u003c\/li\u003e\n\u003cli\u003eInspect the pump housing, cover plate, shaft, seal, key, gasket, and O-ring. Replace damaged or worn parts as required; these components are not included with this listing.\u003c\/li\u003e\n\u003cli\u003eLubricate the new impeller with clean cooling-system water or a lubricant approved for impeller installation. Do not run the pump dry.\u003c\/li\u003e\n\u003cli\u003eInstall the impeller with the fins oriented as required by the pump design, then refit the cover with a suitable new gasket or O-ring if required.\u003c\/li\u003e\n\u003cli\u003eOpen the seacock, start the engine, and check immediately for leaks and proper cooling-water flow.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I confirm that this impeller fits my engine?\u003c\/summary\u003e\n\u003cp\u003eCompare your original impeller and pump application with OEM reference 21213664. Confirm the engine model, pump configuration, fin count, hub, and dimensions before ordering. The compatibility table is a guide and does not replace part-number verification.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this a complete impeller kit?\u003c\/summary\u003e\n\u003cp\u003eNo. This product is one replacement impeller only. Gaskets, O-rings, keys, plugs, and other service parts are not included.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat are common signs of impeller wear?\u003c\/summary\u003e\n\u003cp\u003eCommon signs include higher-than-normal engine temperature, reduced cooling-water discharge, damaged or missing fins, cracking, hardening, or deformation of the old impeller.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow often should a water-pump impeller be inspected?\u003c\/summary\u003e\n\u003cp\u003eInspect the impeller according to the engine manufacturer's maintenance schedule and whenever cooling performance changes. Replacement intervals depend on operating hours, storage conditions, water quality, and whether the pump has been operated dry.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat can cause premature impeller failure?\u003c\/summary\u003e\n\u003cp\u003eCommon causes include dry running, abrasive debris, extended storage, chemical or oil contamination, overheating, a damaged pump housing, or a worn shaft and seal.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I install this impeller myself?\u003c\/summary\u003e\n\u003cp\u003eImpeller replacement is a common maintenance procedure, but the work should be performed only by someone familiar with marine cooling systems. Follow the engine and pump manufacturer's service instructions and use appropriate safety precautions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\n\u003cp\u003eNo. This is an aftermarket replacement impeller referenced to Volvo Penta OEM part number 21213664.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eClose the cooling-water seacock and disable the engine before servicing the pump.\u003c\/li\u003e\n\u003cli\u003eNever operate the pump dry, even briefly.\u003c\/li\u003e\n\u003cli\u003eVerify the original part number and pump configuration before purchase.\u003c\/li\u003e\n\u003cli\u003eReplace damaged gaskets, O-rings, keys, covers, housings, or seals as necessary; they are not included with this impeller.\u003c\/li\u003e\n\u003cli\u003eIf fitment or installation is uncertain, consult the engine manufacturer’s service information or a qualified marine technician.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAfter Installation\u003c\/h2\u003e\n\u003cp\u003eRun the engine with the seacock open and inspect the pump area for leaks. Confirm normal engine temperature and steady cooling-water discharge. Stop the engine immediately if cooling flow is abnormal or the pump leaks.\u003c\/p\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723808346427,"sku":"21213664QM","price":28.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/21213664QM_549cdb1e-aa9b-497c-9b01-ba8960f13baa.png?v=1763038488"},{"product_id":"water-pump-impeller-kit-fits-indmar-320hp-350hp-volvo-penta-yanmar-replaces-09-812b-1-s685007","title":"Water Pump Impeller for Johnson F6B-9 Series Pumps – Replaces 09-812B-1, 102480501","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\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 {\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\u003c\/strong\u003e is a replacement impeller for Johnson F6B-9 series raw-water pumps. It is intended to help maintain the water flow required for marine engine cooling systems when the original impeller is worn, cracked, brittle, or damaged.\u003c\/p\u003e\n\u003cp\u003eUse the reference numbers below, together with your pump model and the dimensions of your existing part, to confirm compatibility before ordering. This listing is for a single replacement impeller; seals, gaskets, and other pump components are not included unless specifically stated.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplacement impeller for Johnson F6B-9 series pumps.\u003c\/li\u003e\n  \u003cli\u003eNeoprene rubber construction with a brass insert.\u003c\/li\u003e\n  \u003cli\u003eDesigned for service replacement of a worn marine raw-water-pump impeller.\u003c\/li\u003e\n  \u003cli\u003eVerify the pump model, drive style, dimensions, and reference number before installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eThe following numbers are reference identifiers associated with this impeller. Part-number references do not replace verification of the pump model, dimensions, and drive 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\n      \u003ctr\u003e\n        \u003cth\u003eBrand or Reference\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\u003eJohnson\u003c\/td\u003e\n        \u003ctd\u003e09-812B-1\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\u003eReference\u003c\/td\u003e\n        \u003ctd\u003e102480501\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Pump Compatibility\u003c\/h2\u003e\n\u003cp\u003eCompatibility is determined by the water pump and impeller specifications rather than by engine brand or horsepower alone. This impeller is identified for use with Johnson F6B-9 series pumps. Confirm the pump model and existing impeller before purchase.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine and Pump Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003ePump Brand\u003c\/th\u003e\n        \u003cth\u003ePump Series\u003c\/th\u003e\n        \u003cth\u003eReference Number\u003c\/th\u003e\n        \u003cth\u003eFitment Requirement\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eJohnson\u003c\/td\u003e\n        \u003ctd\u003eF6B-9 series\u003c\/td\u003e\n        \u003ctd\u003e09-812B-1\u003c\/td\u003e\n        \u003ctd\u003eConfirm pump model, impeller dimensions, and drive configuration.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n  \u003cdd\u003eWater pump impeller\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eJohnson F6B-9 series raw-water pumps\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n  \u003cdd\u003eReplacement installation\u003c\/dd\u003e\n  \u003cdt\u003eImpeller Material\u003c\/dt\u003e\n  \u003cdd\u003eNeoprene rubber with brass insert\u003c\/dd\u003e\n  \u003cdt\u003eImpeller Design\u003c\/dt\u003e\n  \u003cdd\u003e12 blades with spline drive\u003c\/dd\u003e\n  \u003cdt\u003eImpeller Dimensions\u003c\/dt\u003e\n  \u003cdd\u003e2-1\/4\" outside diameter × 1-15\/16\" width (57.15 mm × 49.21 mm)\u003c\/dd\u003e\n  \u003cdt\u003eShaft Type\u003c\/dt\u003e\n  \u003cdd\u003e5\/8\" spline-drive brass insert\u003c\/dd\u003e\n  \u003cdt\u003eCompatible Pump Reference\u003c\/dt\u003e\n  \u003cdd\u003eJohnson F6B-9 series\u003c\/dd\u003e\n  \u003cdt\u003eSeals and Gaskets\u003c\/dt\u003e\n  \u003cdd\u003eNot included\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\u003cspan style=\"color:#d0021b;\"\u003e1 x\u003c\/span\u003e Water pump impeller\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e The package does not include an O-ring, gasket, cover plate, pump housing, or installation tool.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eClose the engine's raw-water intake valve or seacock.\u003c\/li\u003e\n  \u003cli\u003eLocate the raw-water pump and remove the screws securing the end cover plate.\u003c\/li\u003e\n  \u003cli\u003eCarefully remove the cover plate and note the direction in which the old impeller blades are bent.\u003c\/li\u003e\n  \u003cli\u003eRemove the old impeller using an impeller puller or suitable pliers. Avoid gouging the pump housing.\u003c\/li\u003e\n  \u003cli\u003eClean debris and old gasket material from the pump housing and cover plate, and inspect the housing and cover for scoring or damage.\u003c\/li\u003e\n  \u003cli\u003eInstall a suitable new pump seal or gasket if the existing seal is worn or damaged. A replacement seal is not included with this impeller.\u003c\/li\u003e\n  \u003cli\u003eLubricate the inside of the pump housing and the new impeller with a water-based lubricant or dish soap. Do not use petroleum-based grease on the neoprene impeller.\u003c\/li\u003e\n  \u003cli\u003eInsert the new impeller while turning the engine crankshaft in its normal direction of rotation so the blades are oriented correctly.\u003c\/li\u003e\n  \u003cli\u003eReinstall the cover plate and tighten its screws evenly.\u003c\/li\u003e\n  \u003cli\u003eOpen the seacock, start the engine, and immediately check water flow and the pump area for leaks.\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 this impeller will fit my pump?\u003c\/summary\u003e\n  \u003cp\u003eCheck that your pump is a Johnson F6B-9 series pump and compare the reference number, drive style, blade count, outside diameter, width, and insert configuration with your existing impeller. If any of these details differ, confirm fitment with the pump manufacturer or service manual before ordering.\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\u003eCommon signs include higher-than-normal engine temperature, reduced water flow from the exhaust outlet, visible cracks or missing blades, and a stiff or brittle impeller. Pieces from a failed impeller should be removed from the cooling system and the cause of the failure investigated.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eHow often should a marine impeller be replaced?\u003c\/summary\u003e\n  \u003cp\u003eReplacement intervals depend on the engine manufacturer's service schedule, operating hours, storage conditions, and water quality. Inspect the impeller regularly and replace it when it shows wear, cracking, deformation, or loss of flexibility.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs a special tool required for installation?\u003c\/summary\u003e\n  \u003cp\u003eAn impeller puller is recommended because it can make removal easier and reduce the risk of damaging the pump housing. Carefully used pliers may work where permitted by the service procedure.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDoes this product include an O-ring or gasket?\u003c\/summary\u003e\n  \u003cp\u003eNo. This listing contains one replacement impeller only. Inspect the pump cover seal and install a suitable new O-ring or gasket separately when required.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs this an OEM part?\u003c\/summary\u003e\n  \u003cp\u003eThis is an aftermarket replacement impeller. The listed manufacturer reference numbers are provided for identification and fitment comparison; verify the pump specifications before installation.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eShipping speed and cost\u003c\/summary\u003e\n  \u003cp\u003eAvailable shipping methods, delivery estimates, and shipping charges are shown at checkout and may vary by destination.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWarranty and returns\u003c\/summary\u003e\n  \u003cp\u003eWarranty coverage and return eligibility are governed by the applicable store policy. Contact support with your order details before returning a product.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the pump model, reference number, dimensions, and drive configuration against your original part before purchase.\u003c\/li\u003e\n  \u003cli\u003eClose the seacock before servicing the pump and reopen it before operating the engine.\u003c\/li\u003e\n  \u003cli\u003eNever operate the engine without confirming adequate cooling-water flow.\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 housing, cover, or cooling system is damaged.\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 replacement parts selected for practical service use and demanding operating conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGlobal Fulfillment\u003c\/strong\u003e — Available shipping options and delivery estimates are presented at checkout.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing with attention to product consistency and quality control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723966812475,"sku":"1211wp1013","price":25.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/1211wp1013.png?v=1763038648"}],"url":"https:\/\/seasierra.com\/collections\/volvo-penta-325hp-4-stroke-marine-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}