{"title":"Indmar 400HP 4-Stroke Marine Engine Parts","description":"\u003csection id=\"hero\" style=\"padding:16px;border:1px solid #e5e7eb;border-radius:8px;max-width:1000px;margin:0 auto 20px;\"\u003e\n  \u003cp\u003eThis page focuses on Indmar 4‑Stroke 400HP inboard marine engines. It helps you identify compatible parts and find key service information, including maintenance tips, common replacement items, and troubleshooting guidance. You can also browse our main engine parts collections for Indmar‑compatible categories. Scroll to the bottom of this page to start browsing parts. On the collection pages, use the “Filter \u0026amp; Sort” controls to narrow results by horsepower, year range, and part category.\u003c\/p\u003e\n  \u003cp\u003e\n    \u003ca href=\"https:\/\/seasierra.com\/collections\/popular\" style=\"display:inline-block;padding:10px 16px;background:#0f766e;color:#fff;text-decoration:none;border-radius:6px;\"\u003eBrowse Parts Collections\u003c\/a\u003e\n  \u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"max-width:1000px;margin:0 auto 24px;\"\u003e\n  \u003ch2\u003eHow to Identify Your 400HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eLocate the engine serial\/nameplate: commonly on the starboard side of the block near the bellhousing, or on an Indmar tag near the intake\/ECM. Record the full serial and model name.\u003c\/li\u003e\n    \u003cli\u003eRead the model designation and suffixes: they may indicate platform (GM‑based 6.0L vs Ford‑based 6.2L “Raptor”), emissions equipment (catalyst\/ETXCAT), and control calibration.\u003c\/li\u003e\n    \u003cli\u003eDistinguish platforms: GM‑based 6.0L engines typically use cast aluminum manifolds and a conventional accessory layout; Ford‑based Raptor 400 6.2L often has distinct valve covers, belt routing, and “Raptor” labeling.\u003c\/li\u003e\n    \u003cli\u003eConfirm drive details: note transmission\/V‑drive model and cooler type; these affect service parts like fluids, coolers, and mounts.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\" style=\"max-width:1000px;margin:0 auto 24px;\"\u003e\n  \u003ch2\u003ePlatform Overview\u003c\/h2\u003e\n\n  \u003ch3\u003eGM 6.0L V8 (Approx. 400 HP)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;padding:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;padding:8px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eV8 EFI 4‑Stroke, raw‑water or heat‑exchanger cooled, electronic ignition\/ECM.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eIndmar 6.0L GM‑based 400 HP variants (L96\/LY6 family); often seen in mid‑2010s inboards.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eProven small‑block architecture, strong mid‑range torque, widely available 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;\"\u003eSome versions use catalytic (ETXCAT) exhaust manifolds. Verify fuel pump style, plug wire routing, and thermostat housing when selecting parts.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eFord 6.2L V8 “Raptor 400”\u003c\/h3\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;padding:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;padding:8px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eV8 EFI 4‑Stroke (Ford‑based 6.2L), electronic throttle, serpentine belt drive, catalyst exhaust on many models.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eIndmar Raptor 400 installations in V‑drive towboats (mid‑2010s and newer).\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eExcellent low‑end pull for watersports, robust cooling components, modern emissions hardware.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eBelts, sensors, and exhaust components differ from GM‑based 6.0L. Match parts using engine serial and platform (Raptor vs GM 6.0L).\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=\"max-width:1000px;margin:0 auto 24px;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are general guidelines for modern 4‑stroke inboard V8s. Always follow your official Indmar service manual for model‑specific procedures and intervals.\u003c\/p\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;padding:8px;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;padding:8px;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;padding:8px;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;padding:8px;\"\u003eParts Link\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eEngine oil \u0026amp; filter\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003e50 hrs (initial), then every 100 hrs or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eUse marine‑rated oil meeting the engine spec; change more often in severe duty.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\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 #f1f5f9;\"\u003eTransmission\/V‑drive fluid\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003e100–200 hrs or annually (per drive model)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eVerify fluid type for your gearbox\/V‑drive and change the cooler O‑rings if required.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\"\u003eService \u0026amp; Maintenance Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003e200–300 hrs, or if misfire\/starting issues occur\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eCheck gap and plug type based on platform (GM 6.0L vs Raptor 6.2L).\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\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 #f1f5f9;\"\u003eFuel filter \/ water separator\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003e100 hrs or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eReplace more often with ethanol or if stored long periods.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\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 #f1f5f9;\"\u003eRaw‑water pump impeller\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eAnnually or every 100 hrs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eReplace sooner if sand\/silt use, overheating, or weak flow is observed.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/impellers\"\u003eImpellers\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eSea strainer service\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eCheck every outing; clean as needed\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eInspect bowl O‑ring and hoses for leaks or cracks.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/hoses\"\u003eHoses\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eAnodes (zinc\/aluminum\/magnesium)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eInspect monthly; replace when 50% consumed\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eChoose alloy for your water type (salt\/brackish\/fresh).\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\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;\"\u003eSerpentine\/accessory belt\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect every 50–100 hrs; replace at first sign of cracking\/glazing\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eRaptor and GM 6.0L use different belt lengths\/routing—match to platform.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/belt\"\u003eBelt\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=\"max-width:1000px;margin:0 auto 24px;\"\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\u003eOil \u0026amp; Filtration: \u003ca href=\"https:\/\/seasierra.com\/collections\/oil-filters\"\u003eOil Filters\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 and \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-pumps\"\u003eFuel Pumps\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCooling System: \u003ca href=\"https:\/\/seasierra.com\/collections\/water-pumps\"\u003eWater pumps\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/impellers\"\u003eImpellers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eIgnition \/ Electrical: \u003ca href=\"https:\/\/seasierra.com\/collections\/sensors\"\u003eSensors\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/starters\"\u003eStarters\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eExhaust Components: \u003ca href=\"https:\/\/seasierra.com\/collections\/manifolds\"\u003eManifolds\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/elbows\"\u003eElbows\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eHoses \u0026amp; Connections: \u003ca href=\"https:\/\/seasierra.com\/collections\/hoses\"\u003eHoses\u003c\/a\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\" style=\"max-width:1000px;margin:0 auto 24px;\"\u003e\n  \u003ch2\u003eCommon Symptoms \u0026amp; Quick Checks\u003c\/h2\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;padding:8px;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;padding:8px;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left;border-bottom:1px solid #e5e7eb;padding:8px;\"\u003eRelated Parts\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eOverheating or weak water flow\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eInspect sea strainer for debris, raw‑water pump impeller for wear, intake screen, and thermostat operation; verify hoses and clamps.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eWater pump impeller kit, hoses\/clamps, thermostat, intake screen\/strainer parts\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003ePoor acceleration \/ power loss\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eCheck fuel quality, replace fuel filter, verify spark plugs and plug wires, and scan for ECM fault codes (MAP\/O2, etc.).\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eFuel filter, fuel pump, spark plugs\/wires, sensors (MAP, O2)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eHard starting \/ rough idle\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eVerify battery and cable condition, inspect IAC\/throttle body cleanliness, and confirm no vacuum leaks; replace aged plugs.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;border-bottom:1px solid #f1f5f9;\"\u003eStarter, sensors (IAC\/TPS), spark plugs, fuel filter\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eMIL or beeper alarm (check engine)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eRetrieve ECM codes; common items include O2 sensor performance, coolant\/temp sensor, knock sensor, or catalyst efficiency (ETXCAT models).\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eSensors (O2, temp, knock), wiring\/connectors, manifolds\/catalyst hardware\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=\"max-width:1000px;margin:0 auto 24px;\"\u003e\n  \u003ch2\u003eFAQs\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre parts interchangeable between GM 6.0L and Raptor 6.2L platforms?\u003c\/summary\u003e\n    \u003cp\u003eSome service items (filters, anodes, hoses) may be similar, but many components—belts, sensors, ignition, exhaust, and cooling hardware—are platform‑specific. Always match by engine serial, model name, and platform.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should I replace the raw‑water impeller?\u003c\/summary\u003e\n    \u003cp\u003eAs a rule of thumb, replace annually or every 100 hours. In sandy\/silty water or if the engine overheated or sat dry for storage, replace sooner.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should transmission\/V‑drive fluid be changed?\u003c\/summary\u003e\n    \u003cp\u003eMost inboard drives call for 100–200 hours or annual changes, but fluid type and interval vary by gearbox\/V‑drive model. Refer to your drive’s manual.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat information helps confirm part compatibility?\u003c\/summary\u003e\n    \u003cp\u003eProvide the engine serial number, model name (e.g., “Raptor 400” or “6.0L 400 HP”), approximate year, transmission\/V‑drive model, and photos of the nameplate and the part you’re replacing.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"padding:16px;border:1px solid #e5e7eb;border-radius:8px;max-width:1000px;margin:0 auto;\"\u003e\n  \u003cp\u003eReady to find parts? Browse our main engine parts collections and refine by category to match your Indmar 400HP setup.\u003c\/p\u003e\n  \u003cp\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\" style=\"display:inline-block;padding:10px 16px;background:#0f766e;color:#fff;text-decoration:none;border-radius:6px;\"\u003eBrowse Parts Collections\u003c\/a\u003e\u003c\/p\u003e\n  \u003cp style=\"color:#475569;\"\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":"Impeller Repair Kit – Fits Volvo Penta 3.0-8.1L Gas Engines (Replaces 21213664, 3584350, 3588914)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\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\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\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\u003eImpeller Repair Kit – Fits Volvo Penta 3.0-8.1L Gas Engines\u003c\/strong\u003e is designed for maintaining the sea water pump on a wide range of Volvo Penta V6 and V8 stern drive and inboard gas engines, including 3.0L, 4.3L, 5.0L, 5.7L, and 8.1L models. It ensures your engine’s cooling system operates efficiently by replacing a worn or damaged impeller.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct replacement for Volvo Penta (21213664, 3584350, 3588914), Johnson (09-812B), Jabsco (13554-0001), and others, providing a reliable interchange for multiple OEM and aftermarket part numbers.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstalls via a simple spline drive mechanism.\u003c\/li\u003e\n\u003cli\u003eConstructed with a durable neoprene rubber impeller and a brass hub for corrosion resistance.\u003c\/li\u003e\n\u003cli\u003eIncludes essential impeller, O-ring, and gasket for a complete service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\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\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eThis kit is verified for Volvo Penta raw water pumps used on the specified gas engine models.\u003c\/p\u003e\n\u003cp\u003eIt also fits select Indmar Monsoon engines as indicated.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eOEM Part No.\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\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\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\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\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\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\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\u003eFits 320HP, 325HP, 330HP, 335HP, 340HP \u0026amp; 350HP models\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\u003eSea Water Pump Impeller Kit\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eSpline Drive\u003c\/dd\u003e\n  \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eBrass Hub\u003c\/dd\u003e\n  \u003cdt\u003eImpeller Material\u003c\/dt\u003e\n\u003cdd\u003eNeoprene Rubber\u003c\/dd\u003e\n  \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e57mm OD × 48.3mm Width (2-1\/4\" × 1-15\/16\")\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\u003e14.5mm\u003c\/dd\u003e\n  \u003cdt\u003ePackage Contents\u003c\/dt\u003e\n\u003cdd\u003eImpeller, O-Ring, Gasket\u003c\/dd\u003e\n  \u003cdt\u003eColor\u003c\/dt\u003e\n\u003cdd\u003eBlack\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 Impeller\u003c\/span\u003e (Neoprene + Brass Hub) (Replaces 21213664)\u003c\/li\u003e\n  \u003cli\u003e1 x O-Ring\u003c\/li\u003e\n  \u003cli\u003e1 x Gasket\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eClose the seacock\/water intake valve before starting.\u003c\/li\u003e\n  \u003cli\u003eAccess the sea water pump and remove the cover plate screws.\u003c\/li\u003e\n  \u003cli\u003eUse pliers or an impeller puller to remove the old impeller. Note the direction of the vanes.\u003c\/li\u003e\n  \u003cli\u003eClean any debris from the pump housing and inspect for scoring or damage.\u003c\/li\u003e\n  \u003cli\u003eLightly lubricate the new impeller and the inside of the pump housing with a suitable marine lubricant.\u003c\/li\u003e\n  \u003cli\u003eInsert the new impeller, bending the vanes in the same direction as the original.\u003c\/li\u003e\n  \u003cli\u003eInstall the new gasket and\/or O-ring on the cover plate.\u003c\/li\u003e\n  \u003cli\u003eRe-secure the cover plate, tightening screws in a star pattern.\u003c\/li\u003e\n  \u003cli\u003eOpen the seacock, start the engine, and immediately check for leaks and proper water flow.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I know if this impeller fits my specific engine?\u003c\/summary\u003e\u003cp\u003eFirst, check the Engine Compatibility table on this page. Second, cross-reference your existing part number with our Part Number Matrix. If your engine model and part number match, it is a confirmed fit. Always visually compare our product photos with your old part before ordering.\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 signs include engine overheating at idle or low speeds, a reduced stream of water from the exhaust, or visible cracks and missing blades on the impeller itself during inspection. A dry, cracked, or stiff impeller should be replaced immediately.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should I replace my engine's impeller?\u003c\/summary\u003e\u003cp\u003eAs a general rule, impellers should be inspected annually and replaced every one to two years, or every 200-300 hours of operation, whichever comes first. Usage in sandy or silty water may require more frequent changes.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat kind of lubricant should I use for installation?\u003c\/summary\u003e\u003cp\u003eUse a water-based marine lubricant or a small amount of dish soap. Do not use petroleum-based grease, as it can cause the neoprene rubber to degrade over time.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eThe fitment list is broad. Are there any known exceptions?\u003c\/summary\u003e\u003cp\u003eWhile this kit is designed to fit all listed models, manufacturing variations in older engines can occasionally cause issues. Some user feedback indicates that minor fitment adjustments are rarely needed. We recommend carefully checking the dimensions (57mm OD x 48.3mm Width) against your original impeller if you have any doubts.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhy choose an aftermarket part over OEM?\u003c\/summary\u003e\u003cp\u003eThis listing is an aftermarket replacement part, not OEM. It is built to meet or exceed OEM-level specifications with comparable materials and performance. Our parts are manufactured in an ISO 9002 certified facility and are batch-inspected to ensure quality and consistency, offering a great value without compromising on reliability.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the shipping speed and cost?\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly, with a typical transit time of 5–15 days for most regions. Standard shipping is free. Expedited shipping options, where available, will be presented 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 marine use. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard window for items that are unused and in their original condition. See our official policy page or reach out for instructions.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":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":"impeller-repair-kit-fits-johnson-jabsco-indmar-yanmar-replaces-09-812b-1-17935-0001-p","title":"Impeller Repair Kit – Fits Johnson, Jabsco, Indmar, Yanmar (Replaces 09-812B-1, 17935-0001-P)","description":"\u003csection\u003e\n\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\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\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\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 aftermarket \u003cstrong\u003eImpeller Repair Kit – Fits Johnson, Jabsco, Indmar, Yanmar (Replaces 09-812B-1, 17935-0001-P)\u003c\/strong\u003e is designed for a range of V8 marine engines. It is commonly used in Johnson F6B-9 series pumps and Indmar Monsoon, Hammerhead, and Raptor models (320–400HP) found in Supra, Moomba, Mastercraft, and Tige boats from approximately 1986 to the present.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct replacement for multiple OEM and aftermarket part numbers, including Johnson 09-812B-1, Jabsco 17935-0001-P, Sierra 18-3306, Indmar S685007, and Yanmar 119773-42600.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEngineered for direct-fit installation in raw sea water pumps.\u003c\/li\u003e\n\u003cli\u003eConstructed from durable neoprene with a solid brass insert.\u003c\/li\u003e\n\u003cli\u003eKit includes essential gasket and O-ring for a complete service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eJohnson\u003c\/td\u003e\n\u003ctd\u003e09-812B-1 \/ 09-812B\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eJabsco\u003c\/td\u003e\n\u003ctd\u003e17935-0001-P\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 \/ 685007\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eYanmar\u003c\/td\u003e\n\u003ctd\u003e119773-42600 \/ 119773-42600-01\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003ePleasurecraft\u003c\/td\u003e\n\u003ctd\u003eRP061018\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMallory\u003c\/td\u003e\n\u003ctd\u003e9-45704\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    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eIndmar Engines:\u003c\/b\u003e Fits a wide range of Monsoon, Hammerhead, and Raptor models from 1986 to present, commonly found in Supra, Moomba, Mastercraft, and Tige boats.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eJohnson Pumps:\u003c\/b\u003e Compatible with F6B-9 series raw water pumps and specific derivative models.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eYears\u003c\/th\u003e\n        \u003cth\u003eOEM Part No.\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eIndmar\u003c\/td\u003e\n\u003ctd\u003eMonsoon\u003c\/td\u003e\n\u003ctd\u003e320\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–Present\u003c\/td\u003e\n\u003ctd\u003eS685007\/685007\u003c\/td\u003e\n\u003ctd\u003eFor raw sea water pumps\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eIndmar\u003c\/td\u003e\n\u003ctd\u003eMonsoon\u003c\/td\u003e\n\u003ctd\u003e325\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–Present\u003c\/td\u003e\n\u003ctd\u003eS685007\/685007\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eIndmar\u003c\/td\u003e\n\u003ctd\u003eMonsoon\u003c\/td\u003e\n\u003ctd\u003e330\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–Present\u003c\/td\u003e\n\u003ctd\u003eS685007\/685007\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eIndmar\u003c\/td\u003e\n\u003ctd\u003eMonsoon\u003c\/td\u003e\n\u003ctd\u003e335\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–Present\u003c\/td\u003e\n\u003ctd\u003eS685007\/685007\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eIndmar\u003c\/td\u003e\n\u003ctd\u003eMonsoon\u003c\/td\u003e\n\u003ctd\u003e340\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–Present\u003c\/td\u003e\n\u003ctd\u003eS685007\/685007\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eIndmar\u003c\/td\u003e\n\u003ctd\u003eMonsoon\u003c\/td\u003e\n\u003ctd\u003e350\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–Present\u003c\/td\u003e\n\u003ctd\u003eS685007\/685007\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eIndmar\u003c\/td\u003e\n\u003ctd\u003eHammerhead\u003c\/td\u003e\n\u003ctd\u003e365 (Callaway)\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–Present\u003c\/td\u003e\n\u003ctd\u003eS685007\/685007\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eIndmar\u003c\/td\u003e\n\u003ctd\u003eHammerhead\u003c\/td\u003e\n\u003ctd\u003e380\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–Present\u003c\/td\u003e\n\u003ctd\u003eS685007\/685007\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eIndmar\u003c\/td\u003e\n\u003ctd\u003eHammerhead\u003c\/td\u003e\n\u003ctd\u003e383\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–Present\u003c\/td\u003e\n\u003ctd\u003eS685007\/685007\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eIndmar\u003c\/td\u003e\n\u003ctd\u003eHammerhead\u003c\/td\u003e\n\u003ctd\u003e400\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–Present\u003c\/td\u003e\n\u003ctd\u003eS685007\/685007\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eIndmar\u003c\/td\u003e\n\u003ctd\u003eRaptor\u003c\/td\u003e\n\u003ctd\u003e400\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–Present\u003c\/td\u003e\n\u003ctd\u003eS685007\/685007\u003c\/td\u003e\n\u003ctd\u003eFord-based engine\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eIndmar\u003c\/td\u003e\n\u003ctd\u003eRaptor\u003c\/td\u003e\n\u003ctd\u003e450\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–Present\u003c\/td\u003e\n\u003ctd\u003eS685007\/685007\u003c\/td\u003e\n\u003ctd\u003eFord-based engine\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eIndmar\u003c\/td\u003e\n\u003ctd\u003eRaptor\u003c\/td\u003e\n\u003ctd\u003e575\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–Present\u003c\/td\u003e\n\u003ctd\u003eS685007\/685007\u003c\/td\u003e\n\u003ctd\u003eFord-based engine\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eIndmar\u003c\/td\u003e\n\u003ctd\u003eLCR (Carbureted)\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–Present\u003c\/td\u003e\n\u003ctd\u003eS685007\/685007\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eIndmar\u003c\/td\u003e\n\u003ctd\u003e8.1L\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–Present\u003c\/td\u003e\n\u003ctd\u003eS685007\/685007\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSupra\u003c\/td\u003e\n\u003ctd\u003eVarious w\/Indmar\u003c\/td\u003e\n\u003ctd\u003e320-400\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–Present\u003c\/td\u003e\n\u003ctd\u003eS685007\/685007\u003c\/td\u003e\n\u003ctd\u003eAll models with Indmar engines\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMoomba\u003c\/td\u003e\n\u003ctd\u003eVarious w\/Indmar\u003c\/td\u003e\n\u003ctd\u003e320-400\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–Present\u003c\/td\u003e\n\u003ctd\u003eS685007\/685007\u003c\/td\u003e\n\u003ctd\u003eAll models with Indmar engines\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMastercraft\u003c\/td\u003e\n\u003ctd\u003eVarious w\/Indmar\u003c\/td\u003e\n\u003ctd\u003e320-400\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–Present\u003c\/td\u003e\n\u003ctd\u003eS685007\/685007\u003c\/td\u003e\n\u003ctd\u003eAll models with Indmar engines\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eTige\u003c\/td\u003e\n\u003ctd\u003eVarious w\/Indmar\u003c\/td\u003e\n\u003ctd\u003e320-400\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–Present\u003c\/td\u003e\n\u003ctd\u003eS685007\/685007\u003c\/td\u003e\n\u003ctd\u003eAll models with Indmar engines\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eAxis\u003c\/td\u003e\n\u003ctd\u003eVarious w\/Challenger\u003c\/td\u003e\n\u003ctd\u003e5.7L\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e1986–Present\u003c\/td\u003e\n\u003ctd\u003eS685007\/685007\u003c\/td\u003e\n\u003ctd\u003eChallenger 5.7L engines\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMalibu\u003c\/td\u003e\n\u003ctd\u003eM-5, M-6\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003e4-Stroke\u003c\/td\u003e\n\u003ctd\u003e2019–2022\u003c\/td\u003e\n\u003ctd\u003eS685007\/685007\u003c\/td\u003e\n\u003ctd\u003eIf impeller housing has been converted to new design\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eJohnson\u003c\/td\u003e\n\u003ctd\u003eF6B-9\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1986–Present\u003c\/td\u003e\n\u003ctd\u003e09-812B-1\/09-812B\u003c\/td\u003e\n\u003ctd\u003eRaw water pump model\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eJohnson\u003c\/td\u003e\n\u003ctd\u003e10-24232-1\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1986–Present\u003c\/td\u003e\n\u003ctd\u003e09-812B-1\/09-812B\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eJohnson\u003c\/td\u003e\n\u003ctd\u003e10-24915-01\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003ctd\u003e1986–Present\u003c\/td\u003e\n\u003ctd\u003e09-812B-1\/09-812B\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eRaw Sea Water Pump Impeller Kit\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect replacement\u003c\/dd\u003e\n  \u003cdt\u003eMaterial\u003c\/dt\u003e\n\u003cdd\u003eNeoprene with Brass Insert\u003c\/dd\u003e\n  \u003cdt\u003eShaft Connection\u003c\/dt\u003e\n\u003cdd\u003e12-spline Drive, 5\/8\" (16mm) Shaft\u003c\/dd\u003e\n  \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003eDiameter: 2-1\/4\" (57.1mm), Width: 1-15\/16\" (49.2mm)\u003c\/dd\u003e\n  \u003cdt\u003eNumber of Blades\u003c\/dt\u003e\n\u003cdd\u003e12\u003c\/dd\u003e\n  \u003cdt\u003eColor\u003c\/dt\u003e\n\u003cdd\u003eBlack\u003c\/dd\u003e\n  \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003eVaries by manufacturer (typically 1 year)\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 Impeller (Neoprene + Brass)\u003c\/li\u003e\n  \u003cli\u003e1 x O-Ring\u003c\/li\u003e\n  \u003cli\u003e1 x Gasket\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the boat's battery to prevent accidental starts.\u003c\/li\u003e\n  \u003cli\u003eClose the raw water intake seacock.\u003c\/li\u003e\n  \u003cli\u003ePlace absorbent pads under the pump to catch any spilled coolant or water.\u003c\/li\u003e\n  \u003cli\u003eRemove the screws from the raw water pump cover plate.\u003c\/li\u003e\n  \u003cli\u003eCarefully pry off the cover. Note the orientation of the impeller blades.\u003c\/li\u003e\n  \u003cli\u003eRemove the old impeller using needle-nose pliers or impeller puller tools.\u003c\/li\u003e\n  \u003cli\u003eClean the inside of the pump housing, removing any old debris or impeller fragments.\u003c\/li\u003e\n  \u003cli\u003eLightly lubricate the new impeller and the inside of the housing with a marine-safe lubricant.\u003c\/li\u003e\n  \u003cli\u003eInstall the new impeller, bending the blades in the same direction as the old one.\u003c\/li\u003e\n  \u003cli\u003eInstall the new gasket or O-ring on the cover plate.\u003c\/li\u003e\n  \u003cli\u003eRe-secure the cover plate with the screws, tightening them in a star pattern.\u003c\/li\u003e\n  \u003cli\u003eOpen the seacock, reconnect the battery, and start the engine to check for leaks and proper water flow.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I confirm this impeller fits my specific engine?\u003c\/summary\u003e\u003cp\u003eThe best way to confirm fitment is to match your existing part number to one listed in our Part Number Matrix. Additionally, check your engine model and year against the compatibility table. If you are unsure, inspect your old impeller for dimensions (2-1\/4\" D x 1-15\/16\" W) and the 12-spline shaft design.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are common signs of a failing impeller?\u003c\/summary\u003e\u003cp\u003eSymptoms of a worn or damaged impeller include engine overheating at idle or low speeds, a reduced stream of water from the exhaust, and visible cracks or missing blades on the impeller itself upon inspection. It is a critical component for engine cooling.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should I replace my raw water pump impeller?\u003c\/summary\u003e\u003cp\u003eAs a general rule, impellers should be inspected annually and replaced every 1-2 years or every 100-200 operating hours, whichever comes first. Usage in saltwater or silty\/sandy conditions may require more frequent replacement.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eMy boat is overheating. Could this impeller fix it?\u003c\/summary\u003e\u003cp\u003eAn overheating engine is a classic sign of a failed raw water pump impeller. While other issues can cause overheating (like a clogged intake or thermostat failure), the impeller is a common failure point and a good place to start your diagnosis.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this kit difficult to install myself?\u003c\/summary\u003e\u003cp\u003eFor those with basic mechanical skills and tools, replacing an impeller is a straightforward maintenance task that typically takes under an hour. However, pump access can be tight on some boats. If you are not comfortable performing the work, we recommend professional installation.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723966845243,"sku":"OA-OV3D-KDGW","price":21.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/OA-OV3D-KDGW.png?v=1763038651"}],"url":"https:\/\/seasierra.com\/collections\/indmar-400hp-4-stroke-marine-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}