{"title":"Indmar 4-Stroke 383 HP Marine Engine Parts","description":"\u003csection id=\"hero\" style=\"padding:16px; border:1px solid #e5e5e5; border-radius:8px;\"\u003e\n  \u003cp\u003e\n    This page is for Indmar 4‑Stroke 383 HP marine engines. Use it to find compatible parts and practical service information. Below you’ll find maintenance tips, common replacement parts, and troubleshooting guidance. You can also browse the main Indmar parts collections to source routine service components. Scroll to the bottom of this page to start browsing parts for this engine, and remember that on any collection page you can use the Filter \u0026amp; Sort controls to narrow results by horsepower, year range, and part category\/section.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    \u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\" style=\"display:inline-block; padding:10px 14px; background:#0a6; color:#fff; text-decoration:none; border-radius:6px;\"\u003eBrowse All Indmar Parts\u003c\/a\u003e\n  \u003c\/p\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eHow to Identify Your 383 HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eNameplate\/serial plate: Typically found on or near the intake manifold, valve cover, or bellhousing. Record the full model and serial numbers.\u003c\/li\u003e\n    \u003cli\u003eModel code details: Suffixes may indicate cooling package (raw water vs. freshwater\/closed cooling), ignition\/ECM family, and belt drive style (V‑belt vs. serpentine).\u003c\/li\u003e\n    \u003cli\u003eIndmar 383 platforms: Commonly referred to as “383 Hammerhead.” Some builds are multi‑port EFI while older packages may be carbureted—verify before ordering fuel\/ignition parts.\u003c\/li\u003e\n    \u003cli\u003e4‑Stroke identifiers: Presence of an engine oil filter, crankcase oil fill on a valve cover, and PCV system confirm 4‑Stroke configuration.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eEngine Platform Overview\u003c\/h2\u003e\n  \u003ch3\u003eIndmar 383 Hammerhead (Small‑Block V8)\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:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003e4‑stroke V8, 383 cid (stroked small‑block), typically multi‑port EFI (some earlier packages carbureted); raw‑water or freshwater‑cooled variants.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eIndmar 383 “Hammerhead” packages used in premium towboats of the 2000s era; verify exact sub‑model by serial plate.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eStrong low‑end and mid‑range torque, familiar GM‑based service parts, wide aftermarket support, reliable cooling and ignition systems when maintained.\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 wear items (plugs, belts, sensors) are shared with GM small‑block marine applications; confirm belt type (serpentine vs. V‑belt) and cooling package before ordering.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"service-kits\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are general guidelines for Indmar 4‑stroke V8 packages. Always follow the service schedule and specifications in your official Indmar\/boat manufacturer manual.\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:8px;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eParts Link\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eEngine oil + filter\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003e50–100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eUse marine‑approved oil meeting viscosity for ambient temps; replace filter each oil change.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\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 #f0f0f0;\"\u003eFuel filter \/ water separator\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eEvery 100 hours or seasonally\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eReplace more often with E10 fuel or if contamination is suspected.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\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 #f0f0f0;\"\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003e100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eUse the specified heat range and gap; replace wires as needed.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\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 #f0f0f0;\"\u003eRaw‑water pump impeller\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003e100 hours or every 1–2 seasons\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eReplace sooner if stream is weak, temps creep up, or after any dry‑run incident.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\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 #f0f0f0;\"\u003eAnodes (zinc\/aluminum)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eInspect every 50 hours; replace when 50% depleted\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eMatch anode alloy to water type (salt\/brackish\/fresh).\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\"\u003eAnodes\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eSerpentine\/V‑belt\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eInspect each service; replace at first signs of cracking or glazing\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eVerify belt type by your build (serpentine vs. V‑belt).\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/belt\"\u003eBelts\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eCooling hoses \u0026amp; clamps\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eAnnually or as needed\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eReplace soft, swollen, or cracked hoses; tighten\/replace clamps.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\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;\"\u003eTransmission fluid (V‑drive\/direct‑drive)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCheck often; change annually or as specified\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eUse only the fluid type\/specification listed by your transmission manufacturer.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\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    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"common-parts\" style=\"margin-top: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\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\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\u003eIgnition \/ Electrical: \u003ca href=\"https:\/\/seasierra.com\/collections\/electrical-items\"\u003eElectrical Items\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/sensors\"\u003eSensors\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eIntake \u0026amp; Filtration: \u003ca href=\"https:\/\/seasierra.com\/collections\/air-filters\"\u003eAir Filters\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCorrosion Protection: \u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\"\u003eAnodes\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eGaskets \u0026amp; Sealing: \u003ca href=\"https:\/\/seasierra.com\/collections\/gaskets\"\u003eGaskets\u003c\/a\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\" style=\"margin-top: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 #ddd; padding:8px;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:8px;\"\u003eRelated Parts\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eWeak water stream \/ rising engine temperature\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eInspect intake screen\/strainer, raw‑water pump impeller, and thermostat; verify hose condition and clamps.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eWater pump, impeller kit, hoses, clamps\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003ePoor acceleration \/ power loss\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eCheck fuel quality, replace fuel filter, verify spark plugs and air filter; scan for sensor faults if EFI.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eFuel filter, injectors, spark plugs, air filter, sensors\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eHard starting \/ rough idle\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eConfirm battery voltage and connections, ignition switch operation, fuel pressure, and look for vacuum leaks.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f0f0f0;\"\u003eSpark plugs, sensors, fuel pump, injectors\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eBelt squeal \/ charging issues\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect belt condition\/tension, tensioner pulley alignment, and alternator pulley.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eBelt, tensioner pulley, electrical items\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=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eFAQs\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre parts interchangeable across different Indmar 383 years?\u003c\/summary\u003e\n    \u003cp\u003eMany wear items are shared across GM small‑block marine variants, but sensors, fuel system components, belt drives, and cooling hardware can differ by year and package. Always confirm by serial\/model and cooling\/drive configuration.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should I replace the raw‑water impeller?\u003c\/summary\u003e\n    \u003cp\u003eInspect each season and replace every 100 hours or 1–2 seasons, whichever comes first. Replace immediately after any dry‑run or if you notice heat creep or a weak stream at the exhaust.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should transmission fluid be changed?\u003c\/summary\u003e\n    \u003cp\u003eCheck level and condition frequently and change annually or per the transmission manufacturer’s interval. Use only the specified fluid type in your owner’s\/service manual.\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 serial\/model, boat year\/model, cooling package (raw vs. freshwater), belt type (serpentine or V‑belt), and clear 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=\"margin-top:24px; padding:16px; border:1px solid #e5e5e5; border-radius:8px;\"\u003e\n  \u003cp\u003eReady to service your Indmar 4‑Stroke 383 HP? Browse our main engine parts collections and filter by category to quickly locate compatible items for your year and package.\u003c\/p\u003e\n  \u003cp\u003e\n    \u003ca href=\"https:\/\/seasierra.com\/collections\/service-maintenance-kits\" style=\"display:inline-block; padding:10px 14px; background:#0a6; color:#fff; text-decoration:none; border-radius:6px;\"\u003eBrowse All Indmar Parts\u003c\/a\u003e\n  \u003c\/p\u003e\n  \u003cp style=\"font-size:0.95em; color:#444;\"\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-johnson-jabsco-indmar-yanmar-replaces-09-812b-1-17935-0001-p","title":"Impeller Repair Kit for Johnson Pump Applications – Replaces 09-812B-1","description":"\u003csection\u003e\n\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 aftermarket \u003cstrong\u003eimpeller repair kit\u003c\/strong\u003e is intended for selected raw-water pump applications using the Johnson Pump reference \u003cstrong\u003e09-812B-1\u003c\/strong\u003e. It is supplied as a service kit for replacing a worn or damaged marine engine cooling-system impeller.\u003c\/p\u003e\n\u003cp\u003eFitment depends on the exact pump, housing, shaft configuration, and engine application. Confirm the part number and the physical design of your existing impeller before ordering. The reference number is associated with Johnson Pump applications in the available catalog material; it should not be treated as universal fitment for every Johnson, Jabsco, Indmar, Yanmar, Volvo, or boat model.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAftermarket replacement for selected raw-water pump impeller applications.\u003c\/li\u003e\n  \u003cli\u003eDesigned for routine cooling-system service when the pump and impeller specifications match.\u003c\/li\u003e\n  \u003cli\u003eKit format includes the impeller and the listed sealing components.\u003c\/li\u003e\n  \u003cli\u003eVerify dimensions, spline or shaft connection, blade count, and cover-plate seal before installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number References\u003c\/h2\u003e\n\u003cp\u003eThe following numbers are reference leads supplied with this listing. Cross-reference them against the number stamped or listed for your pump; number co-occurrence alone does not confirm fitment.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number References\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n\u003cth\u003eBrand or Source\u003c\/th\u003e\n\u003cth\u003eReference Number\u003c\/th\u003e\n\u003cth\u003eUse\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eJohnson Pump\u003c\/td\u003e\n\u003ctd\u003e09-812B-1\u003c\/td\u003e\n\u003ctd\u003ePrimary replacement reference\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eJohnson Pump\u003c\/td\u003e\n\u003ctd\u003e09-812B\u003c\/td\u003e\n\u003ctd\u003eRelated reference shown for identification\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\u003ctd\u003eListing cross-reference; verify before purchase\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003ctd\u003e18-3306\u003c\/td\u003e\n\u003ctd\u003eListing cross-reference; verify before purchase\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eIndmar\u003c\/td\u003e\n\u003ctd\u003eS685007 \/ 685007\u003c\/td\u003e\n\u003ctd\u003eListing cross-reference; verify pump configuration\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\u003ctd\u003eListing cross-reference; verify application\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003ePleasurecraft\u003c\/td\u003e\n\u003ctd\u003eRP061018\u003c\/td\u003e\n\u003ctd\u003eListing cross-reference; verify application\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eMallory\u003c\/td\u003e\n\u003ctd\u003e9-45704\u003c\/td\u003e\n\u003ctd\u003eListing cross-reference; verify application\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\u003ctd\u003eListing cross-reference; verify application\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eApplication and Compatibility\u003c\/h2\u003e\n\u003cp\u003eThis kit is for selected marine raw-water pump applications rather than all engines sold under the brands listed below. The available catalog evidence identifies Johnson Pump 09-812B-1 in connection with a Volvo cooling-system application, including Volvo applications described as 1998 and earlier. This information is a catalog lead and must be checked against the complete pump and engine identification.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Application and Compatibility Guidance\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003cth\u003eReference\u003c\/th\u003e\n\u003cth\u003eCompatibility Guidance\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eJohnson Pump\u003c\/td\u003e\n\u003ctd\u003e09-812B-1 \/ 09-812B\u003c\/td\u003e\n\u003ctd\u003eConfirm the pump model, housing, shaft, and impeller dimensions.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eVolvo cooling-system applications\u003c\/td\u003e\n\u003ctd\u003eCatalog association with Johnson Pump 09-812B-1\u003c\/td\u003e\n\u003ctd\u003eCatalog text identifies Volvo applications described as 1998 and earlier; verify the exact engine and pump assembly.\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eJabsco, Indmar, Yanmar, Pleasurecraft, Mallory, and Yamaha applications\u003c\/td\u003e\n\u003ctd\u003eSee reference table\u003c\/td\u003e\n\u003ctd\u003eUse the listed numbers only as cross-reference leads. Do not rely on brand or boat model alone.\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 repair kit\u003c\/dd\u003e\n  \u003cdt\u003eProduct Construction\u003c\/dt\u003e\n  \u003cdd\u003eNeoprene impeller with metal insert, as described for this listing\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n  \u003cdd\u003eReplacement service part for a matching pump assembly\u003c\/dd\u003e\n  \u003cdt\u003eFitment Basis\u003c\/dt\u003e\n  \u003cdd\u003ePart-number and physical-dimension comparison required\u003c\/dd\u003e\n  \u003cdt\u003ePrimary Reference\u003c\/dt\u003e\n  \u003cdd\u003eJohnson Pump 09-812B-1\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cp\u003eExact dimensions, blade count, spline configuration, shaft size, and seal profile should be compared with the original part and pump manufacturer information before installation. Do not assume that a similar-looking impeller is interchangeable.\u003c\/p\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x Replacement impeller\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\u003cp\u003ePackage contents are based on the kit configuration described for this listing. Inspect the received parts before disassembly and confirm that the included seal matches your pump cover.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eSwitch off the engine, disconnect the battery where appropriate, and prevent accidental starting.\u003c\/li\u003e\n  \u003cli\u003eClose the raw-water intake seacock before opening the pump.\u003c\/li\u003e\n  \u003cli\u003ePlace an absorbent pad below the pump to catch residual water.\u003c\/li\u003e\n  \u003cli\u003eRemove the pump-cover fasteners and carefully remove the cover plate.\u003c\/li\u003e\n  \u003cli\u003eNote the original impeller blade orientation and remove the old impeller with suitable pliers or an impeller puller.\u003c\/li\u003e\n  \u003cli\u003eClean the pump cavity and remove any broken blade fragments or debris.\u003c\/li\u003e\n  \u003cli\u003eLightly lubricate the replacement impeller with a lubricant approved for the pump and cooling-system application.\u003c\/li\u003e\n  \u003cli\u003eInstall the impeller in the correct rotational orientation for the pump.\u003c\/li\u003e\n  \u003cli\u003eFit the new gasket or O-ring supplied for the matching cover design.\u003c\/li\u003e\n  \u003cli\u003eReinstall the cover evenly and tighten the fasteners to the pump manufacturer's specification.\u003c\/li\u003e\n  \u003cli\u003eOpen the seacock, reconnect the battery if disconnected, and check for leaks and proper cooling-water flow after starting.\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 kit fits my engine?\u003c\/summary\u003e\u003cp\u003eStart by matching your existing pump or impeller number to the reference table. Then compare the impeller diameter, width, blade count, shaft or spline connection, insert, and cover seal. Engine brand and boat model alone are not sufficient to confirm fitment.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are common signs of a worn impeller?\u003c\/summary\u003e\u003cp\u003eCommon symptoms include reduced cooling-water flow, engine overheating, damaged or missing blades, cracking, hardening, or pieces of impeller material found in the cooling passages. Other cooling-system faults can cause similar symptoms, so inspect the complete system.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should a raw-water impeller be replaced?\u003c\/summary\u003e\u003cp\u003eInspect the impeller according to the engine or pump manufacturer's maintenance schedule. Service intervals vary with operating hours, storage conditions, and exposure to saltwater, sand, or debris. Replace it sooner if it shows cracking, distortion, hardening, or missing blades.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan this kit correct an overheating engine?\u003c\/summary\u003e\u003cp\u003eA damaged raw-water impeller can contribute to overheating, but overheating may also result from a blocked intake, damaged pump housing, thermostat problems, restricted passages, or other faults. Diagnose the complete cooling system before returning the engine to service.\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 kit. The listed manufacturer and reference numbers are provided for identification and cross-reference only.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs professional installation recommended?\u003c\/summary\u003e\u003cp\u003eImpeller replacement is a routine service operation for experienced boat owners, but access and pump design vary. Use the manufacturer's service procedure and seek professional assistance if the pump configuration, installation direction, or seal arrangement is uncertain.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the exact pump and impeller application before purchase.\u003c\/li\u003e\n  \u003cli\u003eDo not operate the engine with the raw-water seacock closed.\u003c\/li\u003e\n  \u003cli\u003eInspect the pump housing, cover plate, wear surfaces, and cooling passages whenever an impeller fails.\u003c\/li\u003e\n  \u003cli\u003eDo not install the part if the dimensions, shaft connection, blade design, or seal profile differs from the original.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\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 routine boat and engine maintenance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Listing\u003c\/strong\u003e — Reference numbers and compatibility guidance are provided to support careful part comparison.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitment First\u003c\/strong\u003e — Always compare the original part and pump specifications before installation.\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":28.5,"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-4-stroke-383-hp-marine-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}