{"title":"Crusader 4-Stroke 300HP Marine Engine Parts","description":"\u003csection id=\"hero\" style=\"padding:16px; border:1px solid #e5e7eb; border-radius:8px;\"\u003e\n  \u003cp style=\"max-width:900px;\"\u003e\n    This page is dedicated to Crusader 4‑Stroke 300 HP marine inboard engines. Use it to quickly find compatible parts and practical service information. Below you’ll find maintenance tips, common replacement parts, and troubleshooting guidance. You can also browse our main Crusader collection for service and maintenance kits. Scroll to the bottom of the page to start browsing parts for this engine, and remember you can use the “Filter \u0026amp; Sort” controls on the collection page to narrow results by horsepower, year range, and part category.\n  \u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/crusader-service-maintenance-kits\" style=\"display:inline-block; padding:10px 14px; background:#0ea5e9; color:#fff; border-radius:6px; text-decoration:none;\"\u003eBrowse All Crusader Parts\u003c\/a\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"padding:16px;\"\u003e\n  \u003ch2\u003eHow to Identify Your 300 HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eLocate the identification plate: Crusader serial\/model tags are typically on the intake manifold or a bracket near the flywheel\/bellhousing; a secondary sticker may be on a valve cover.\u003c\/li\u003e\n    \u003cli\u003eRead the model code and suffix: Codes such as MP5.7L often include options for rotation (LH\/RH), cooling, and harness type; suffix characters can indicate year or configuration.\u003c\/li\u003e\n    \u003cli\u003eConfirm engine rotation: Left-hand (standard) vs right-hand (opposite) rotation affects items like serpentine kits, raw-water pump brackets, and ECM calibration.\u003c\/li\u003e\n    \u003cli\u003eNote fuel system: Many 300 HP variants are 5.7L V8 MPI; parts such as injectors, fuel filters, and FCC (Fuel Control Cell) components differ from earlier carb versions.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\" style=\"padding:16px;\"\u003e\n  \u003ch2\u003eEngine Overview\u003c\/h2\u003e\n  \u003ch3\u003eCrusader 5.7L V8 MPI (Approx. 300 HP)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%; max-width:1000px; 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 #f3f4f6;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eV8 gasoline, multi-port fuel injection (MPI), 4‑stroke inboard with raw‑water and heat‑exchanger cooling options.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eExamples include MP5.7L variants (2000s era) with LH or RH rotation, and different harness\/connectors by year.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eStrong mid‑range torque, reliable cold starts, and broad parts availability (filters, pumps, ignition, sensors).\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eRotation, fuel system style (FCC\/returnless), and cooling layout (RWC\/FWC) influence specific service parts. Verify by serial number and model tag before ordering.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"service-kits\" style=\"padding:16px;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp style=\"max-width:900px;\"\u003eIntervals below are general guidelines for 4‑stroke inboard gasoline engines. Always follow the official Crusader service manual for your exact model and operating conditions.\u003c\/p\u003e\n  \u003ctable style=\"width:100%; max-width:1000px; 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 #f3f4f6;\"\u003eEngine oil \u0026amp; filter\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eEvery 100 hrs or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eWarm engine first; replace filter each oil change; verify viscosity and spec.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\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 #f3f4f6;\"\u003eTransmission\/V‑drive gear oil\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eInspect every 50 hrs; change annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eUse the correct ATF\/gear lube for your gearbox; check cooler and lines for leaks.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/crusader-service-maintenance-kits\"\u003eCrusader Service \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 #f3f4f6;\"\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eInspect 100 hrs; replace 300 hrs or as needed\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eUse the specified heat range and gap for MPI calibration.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\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 #f3f4f6;\"\u003eFuel filter(s)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eEvery 100 hrs or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eReplace FCC\/primary and water‑separating filters; relieve fuel pressure before service.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\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 #f3f4f6;\"\u003eRaw‑water pump impeller\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eInspect 100 hrs; replace 1 season\/100 hrs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eReplace sooner if overheating, low flow, or winterized dry; carry a spare on board.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\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 #f3f4f6;\"\u003eAnodes (heat exchanger\/blocks)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eInspect monthly; replace \u0026gt;50% depleted\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eUse the correct material for your water (zinc, aluminum, or magnesium).\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\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 #f3f4f6;\"\u003eSerpentine\/V‑belt\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eInspect 50 hrs; replace 2–3 seasons or on cracks\/slip\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eRotation and alternator size (70A\/100A) change belt length and pulleys.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/belt\"\u003eBelts\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;\"\u003e\n  \u003ch2\u003eFrequently Used Parts Categories\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eRoutine Service Kits – \u003ca href=\"https:\/\/seasierra.com\/collections\/crusader-service-maintenance-kits\"\u003eCrusader Service \u0026amp; Maintenance Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCooling System \u0026amp; Impellers – \u003ca href=\"https:\/\/seasierra.com\/collections\/impellers\"\u003eImpellers\u003c\/a\u003e, \u003ca href=\"https:\/\/seasierra.com\/collections\/water-pumps\"\u003eWater Pumps\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eFuel System – \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eIgnition \/ Electrical – \u003ca href=\"https:\/\/seasierra.com\/collections\/electrical-items\"\u003eElectrical Items\u003c\/a\u003e, \u003ca href=\"https:\/\/seasierra.com\/collections\/spark-plug\"\u003eSpark Plugs\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCharging – \u003ca href=\"https:\/\/seasierra.com\/collections\/alternators\"\u003eAlternators\u003c\/a\u003e, \u003ca href=\"https:\/\/seasierra.com\/collections\/belt\"\u003eBelts\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=\"padding:16px;\"\u003e\n  \u003ch2\u003eCommon Symptoms \u0026amp; Quick Checks\u003c\/h2\u003e\n  \u003ctable style=\"width:100%; max-width:1000px; 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 #f3f4f6;\"\u003eOverheating at idle or high RPM\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eInspect raw‑water strainer for debris; check impeller condition; verify coolant level in FWC systems; look for collapsed hoses.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eWater pump impeller\/kit, anodes, hoses, thermostat, heat‑exchanger service.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003ePoor acceleration or power loss\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eReplace fuel filters; verify fuel pressure; inspect spark plugs and ignition leads; check for restricted exhaust elbows.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eFuel filters, FCC filter, spark plugs, ignition\/electrical components.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eHard starting or rough idle\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eBattery voltage and connections; IAC\/throttle body cleanliness; vacuum leaks; sensor connections (ECT\/MAP).\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eBatteries\/cables, electrical items, sensors, throttle body service parts.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eTransmission runs hot or whines\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eConfirm fluid level\/condition; check cooler and raw‑water flow; inspect hoses for kinks.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #f3f4f6;\"\u003eCooler, hoses, raw‑water pump\/impeller, maintenance kit fluids.\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;\"\u003e\n  \u003ch2\u003eFAQs\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre parts interchangeable between different years or rotations?\u003c\/summary\u003e\n    \u003cp\u003eSome filters and service items are shared, but rotation (LH\/RH), harness connectors, and fuel‑system style can change part fitment. Verify by model code and serial number before ordering.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should the impeller be replaced?\u003c\/summary\u003e\n    \u003cp\u003eInspect every 100 hours and replace at least once per season or every 100 hours—sooner if any overheating, dry running, or storage conditions that can set the vanes.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should transmission or V‑drive fluid be changed?\u003c\/summary\u003e\n    \u003cp\u003eCheck level and condition every 50 hours and change at least annually, or more frequently for heavy use or high temperatures. Always use the fluid type specified by your gearbox.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat information do you need to confirm compatibility?\u003c\/summary\u003e\n    \u003cp\u003ePlease provide the Crusader model and serial number, engine rotation (LH\/RH), cooling type (raw water vs fresh water), and a photo of the nameplate. If possible, include the gearbox model as well.\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 style=\"max-width:900px;\"\u003eReady to find what you need? Browse the main Crusader collection by horsepower, year, and model to locate compatible service parts and accessories.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/crusader-service-maintenance-kits\" style=\"display:inline-block; padding:10px 14px; background:#0ea5e9; color:#fff; border-radius:6px; text-decoration:none;\"\u003eShop Crusader Service \u0026amp; Maintenance Kits\u003c\/a\u003e\n  \u003cp style=\"margin-top:8px; color:#6b7280;\"\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":"sherwood-major-repair-kit-with-10615-impeller-fits-sherwood-p102-p105-p109-p110-pumps-replaces-sherwood-19354-19354-shw-23977","title":"Sherwood Major Repair Kit with 10615 Impeller – Fits Sherwood P102, P105 and P109 Pumps (Replaces Sherwood 19354)","description":"\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td { padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top; }\n  table.ss-table th { white-space:nowrap; word-break:normal; letter-spacing:normal; font-weight:600; background:#f8fafc; }\n  @media (max-width:480px){ table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; } }\n\u003c\/style\u003e\n\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eSherwood Major Repair Kit with 10615 Impeller\u003c\/strong\u003e provides the wear components needed to rebuild selected Sherwood crank-driven raw-water pumps. It is designed for Sherwood pump models \u003cstrong\u003eP102, P105 and P109\u003c\/strong\u003e, which are used in a range of inboard marine applications.\u003c\/p\u003e\n\u003cp\u003eThe kit is a replacement for the Sherwood \u003cstrong\u003e19354\u003c\/strong\u003e major repair kit reference. Confirm the pump model, cover style and component arrangement before ordering, especially when servicing an older pump or a pump that has previously been rebuilt.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Mechanical raw-water pump rebuild.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImpeller:\u003c\/strong\u003e Includes a 12-blade 10615 impeller.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Sherwood P102, P105 and P109 pump models.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGasket note:\u003c\/strong\u003e The supplied end-cover gasket is intended for the applicable later-style pump configuration; compare it with the gasket or O-ring removed from your pump.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePart Number Reference\u003c\/h2\u003e\n\u003cp\u003eUse the following reference to compare the kit with the applicable Sherwood pump-repair listing. Part-number references do not replace verification of the pump model and cover configuration.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Reference\"\u003e\n    \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eReference\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSherwood\u003c\/td\u003e\n\u003ctd\u003e19354\u003c\/td\u003e\n\u003ctd\u003eMajor repair kit reference\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003eSherwood\u003c\/td\u003e\n\u003ctd\u003e10615\u003c\/td\u003e\n\u003ctd\u003eImpeller reference included with this kit\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eMarine raw-water pump major repair kit\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eMechanical\u003c\/dd\u003e\n  \u003cdt\u003eImpeller\u003c\/dt\u003e\n\u003cdd\u003e10615, 12-blade marine impeller\u003c\/dd\u003e\n  \u003cdt\u003eImpeller Material\u003c\/dt\u003e\n\u003cdd\u003eNeoprene\u003c\/dd\u003e\n  \u003cdt\u003eShaft Connection\u003c\/dt\u003e\n\u003cdd\u003e5\/8 in (16 mm)\u003c\/dd\u003e\n  \u003cdt\u003eDrive Type\u003c\/dt\u003e\n\u003cdd\u003e3\/16 in key drive\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Cam\u003c\/li\u003e\n\u003cli\u003e1 x Cam screw\u003c\/li\u003e\n\u003cli\u003e1 x Cam screw washer\u003c\/li\u003e\n\u003cli\u003e2 x Bearings\u003c\/li\u003e\n\u003cli\u003e1 x Small external retaining ring\u003c\/li\u003e\n\u003cli\u003e1 x Large internal retaining ring\u003c\/li\u003e\n\u003cli\u003e1 x Key\u003c\/li\u003e\n\u003cli\u003e1 x Lip seal\u003c\/li\u003e\n\u003cli\u003e1 x 10615 impeller\u003c\/li\u003e\n\u003cli\u003e1 x O-ring\u003c\/li\u003e\n\u003cli\u003e1 x End-cover gasket for the applicable later-style pump configuration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect the vessel battery and close the raw-water intake seacock.\u003c\/li\u003e\n\u003cli\u003ePlace a catch pan under the pump and drain remaining water by loosening the hoses as needed.\u003c\/li\u003e\n\u003cli\u003eRemove the pump end-cover screws, cover and old gasket or O-ring.\u003c\/li\u003e\n\u003cli\u003eCarefully remove the old impeller. Use an impeller puller if necessary and avoid damaging the pump housing.\u003c\/li\u003e\n\u003cli\u003eInspect the housing, shaft and cover for scoring, corrosion or other damage. Clean all mating surfaces thoroughly.\u003c\/li\u003e\n\u003cli\u003eReplace the lip seal, bearings and retaining rings with the supplied components.\u003c\/li\u003e\n\u003cli\u003eApply a small amount of non-petroleum-based lubricant, such as silicone lubricant or soapy water, to the impeller and housing.\u003c\/li\u003e\n\u003cli\u003eInstall the impeller with a twisting motion in the direction of shaft rotation. Do not force it onto the shaft; it must move freely for the pump to prime correctly.\u003c\/li\u003e\n\u003cli\u003eInstall the key, cam and cam-screw components.\u003c\/li\u003e\n\u003cli\u003eFit the correct new gasket or O-ring and securely fasten the end cover.\u003c\/li\u003e\n\u003cli\u003eReconnect the hoses, open the seacock fully and reconnect the battery.\u003c\/li\u003e\n\u003cli\u003eAfter starting the engine, immediately check the pump and hose connections for leaks and confirm normal raw-water flow.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat Sherwood pump models does this kit fit?\u003c\/summary\u003e\u003cp\u003eThis major repair kit is listed for Sherwood raw-water pump models P102, P105 and P109. Verify the pump identification and cover configuration before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes this kit fit every P102, P105 or P109 pump?\u003c\/summary\u003e\u003cp\u003eNot necessarily. Pump revisions may use different covers, gaskets or internal arrangements. Compare the supplied gasket or O-ring, key, cam and other components with your existing pump before installation.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat impeller is included?\u003c\/summary\u003e\u003cp\u003eThe kit includes a 10615 12-blade impeller. The impeller reference should not be confused with a complete major repair kit.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the signs of a failing water-pump impeller?\u003c\/summary\u003e\u003cp\u003eCommon symptoms include higher-than-normal engine temperature, reduced water flow from the exhaust, damaged or missing impeller blades, and water leakage from the pump housing or seal area.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow should the new impeller be lubricated?\u003c\/summary\u003e\u003cp\u003eUse a non-petroleum-based lubricant, such as silicone lubricant or soapy water. Do not force the impeller onto the shaft, and do not use petroleum-based grease on the neoprene impeller.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhen should the impeller be replaced?\u003c\/summary\u003e\u003cp\u003eInspect the impeller during routine pump maintenance and replace it when blades show tearing, cracking, distortion or other damage. Replacement intervals depend on operating hours, water conditions and storage practices.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this an OEM Sherwood part?\u003c\/summary\u003e\u003cp\u003eThis listing is for an aftermarket replacement repair kit, not a genuine OEM Sherwood kit. Sherwood and the referenced part numbers are used only to identify the applicable pump and replacement references.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the shipping speed and cost?\u003c\/summary\u003e\u003cp\u003eTypical international transit is 5–15 days. Standard shipping is free to most regions; available expedited options and charges are shown at checkout.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\u003cp\u003eThis product is covered by a 1-year warranty against manufacturing defects under normal use. Returns are accepted within the standard return period for unused items in their original condition. Contact support for return instructions.\u003c\/p\u003e\u003c\/details\u003e\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eConfirm the pump model and compare the new components with the original parts before installation.\u003c\/li\u003e\n\u003cli\u003eClose the seacock and disconnect the battery before servicing the raw-water pump.\u003c\/li\u003e\n\u003cli\u003eThis is an aftermarket replacement kit, not a genuine OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended when pump, shaft or housing damage is present.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine replacement parts selected for dependable service in real-world conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Standard delivery is available to most regions, with shipping options shown at checkout.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing and practical replacement solutions for marine maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723798712635,"sku":"21FIK013-G","price":61.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/21FIK013-G.png?v=1763032080"},{"product_id":"belt-tensioner-fits-volvo-penta-4-3l-8-1l-pcm-crusader-replaces-3885250-3587858-ra068001","title":"Belt Tensioner for Volvo Penta 4.3L, 5.0L, 5.7L and 8.1L Marine Engines – Replaces 3885250, 3587858, 3587859 and 3861010","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 aftermarket \u003cstrong\u003ebelt tensioner assembly\u003c\/strong\u003e is designed for selected Volvo Penta marine engines using the applicable serpentine-belt tensioner arrangement. Catalog references identify applications in the Volvo Penta 4.3L, 5.0L, 5.7L and 8.1L engine families.\u003c\/p\u003e\n\u003cp\u003eBefore ordering, compare the part number and tensioner arrangement on your engine with the references and application information below. Model-family listings alone do not confirm fitment for every engine configuration.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplacement belt tensioner assembly for selected Volvo Penta marine engines.\u003c\/li\u003e\n  \u003cli\u003eHelps maintain correct tension in the serpentine belt system.\u003c\/li\u003e\n  \u003cli\u003eSupplied as one individual tensioner assembly.\u003c\/li\u003e\n  \u003cli\u003eAftermarket replacement; not an original Volvo Penta component.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number References\u003c\/h2\u003e\n\u003cp\u003eThe following manufacturer part numbers are listed as applicable references for this tensioner assembly. Confirm the number on your original part before purchase.\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\u003eManufacturer\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n        \u003cth\u003eReference Type\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\u003e3885250\u003c\/td\u003e\n        \u003ctd\u003ePrimary catalog reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e3587858\u003c\/td\u003e\n        \u003ctd\u003eApplication reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e3587859\u003c\/td\u003e\n        \u003ctd\u003eApplication reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e3861010\u003c\/td\u003e\n        \u003ctd\u003eApplication 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\u003eThe catalog application references below are grouped by engine family. Check your exact model designation, belt routing and original tensioner before ordering.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Volvo Penta Engine Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eEngine Models Listed\u003c\/th\u003e\n        \u003cth\u003eEngine Family\u003c\/th\u003e\n        \u003cth\u003eSystem\u003c\/th\u003e\n        \u003cth\u003eApplicable Reference\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\u003e4.3 GL, 4.3 GXI, 4.3 GI, 4.3 OSI\u003c\/td\u003e\n        \u003ctd\u003e4.3L\u003c\/td\u003e\n        \u003ctd\u003eMarine serpentine-belt system\u003c\/td\u003e\n        \u003ctd\u003e3885250 \/ 3587858\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e5.0 GXI, 5.0 GI, 5.0 OSI\u003c\/td\u003e\n        \u003ctd\u003e5.0L\u003c\/td\u003e\n        \u003ctd\u003eMarine serpentine-belt system\u003c\/td\u003e\n        \u003ctd\u003e3885250 \/ 3587858\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e5.7 GI, 5.7 GXI, 5.7 OSI\u003c\/td\u003e\n        \u003ctd\u003e5.7L\u003c\/td\u003e\n        \u003ctd\u003eMarine serpentine-belt system\u003c\/td\u003e\n        \u003ctd\u003e3885250 \/ 3587858\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e8.1 GI, 8.1 GXI, 8.1 IPSCE, 8.1 OSI\u003c\/td\u003e\n        \u003ctd\u003e8.1L\u003c\/td\u003e\n        \u003ctd\u003eMarine serpentine-belt system\u003c\/td\u003e\n        \u003ctd\u003e3885250 \/ 3587859 \/ 3861010\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\u003eSerpentine belt tensioner assembly\u003c\/dd\u003e\n  \u003cdt\u003eProduct Configuration\u003c\/dt\u003e\n  \u003cdd\u003eSingle replacement assembly\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eSelected Volvo Penta marine engines with the matching belt-tensioner arrangement\u003c\/dd\u003e\n  \u003cdt\u003ePart Type\u003c\/dt\u003e\n  \u003cdd\u003eAftermarket replacement\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 Belt tensioner assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the battery and allow the engine to cool before beginning work.\u003c\/li\u003e\n  \u003cli\u003eConfirm that the replacement tensioner matches the original part and belt-routing arrangement.\u003c\/li\u003e\n  \u003cli\u003eUse the appropriate serpentine-belt tool or breaker bar to release belt tension.\u003c\/li\u003e\n  \u003cli\u003eRemove the belt from the tensioner and note its routing before disassembly.\u003c\/li\u003e\n  \u003cli\u003eRemove the original tensioner and retain any hardware that must be reused, unless replacement hardware is specified by the service information.\u003c\/li\u003e\n  \u003cli\u003eClean the mounting surface and install the replacement tensioner in the original position.\u003c\/li\u003e\n  \u003cli\u003eTighten the mounting fasteners to the engine manufacturer's specified torque.\u003c\/li\u003e\n  \u003cli\u003eRoute the belt according to the engine service manual and slowly release the tensioner.\u003c\/li\u003e\n  \u003cli\u003eCheck that the belt is fully seated and aligned on every pulley before starting the engine.\u003c\/li\u003e\n  \u003cli\u003eAfter startup, inspect belt tracking and listen for abnormal noise.\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 fitment?\u003c\/summary\u003e\n  \u003cp\u003eMatch the exact number on your original tensioner with the listed references, then confirm the engine model and belt arrangement. The 4.3L, 5.0L, 5.7L and 8.1L engine families contain multiple configurations, so the model family alone is not sufficient.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are common signs of a worn tensioner?\u003c\/summary\u003e\n  \u003cp\u003ePossible symptoms include belt squealing or chirping, abnormal pulley noise, belt misalignment, uneven belt wear, visible wobble or excessive movement at the tensioner.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs a special tool required?\u003c\/summary\u003e\n  \u003cp\u003eA serpentine-belt tensioner tool or a suitable long-handled breaker bar is commonly used to release belt tension. Follow the procedures and safety requirements in your engine service manual.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs this for a V-belt system?\u003c\/summary\u003e\n  \u003cp\u003eNo. This listing is for the matching serpentine-belt tensioner arrangement. It should not be used on an engine equipped with a different V-belt or accessory-drive configuration.\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 assembly intended for applications using the listed references. It is not manufactured or sold as an original Volvo Penta component.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat should I do if my engine model is not listed?\u003c\/summary\u003e\n  \u003cp\u003eDo not assume compatibility from engine displacement alone. Compare the original part number, mounting arrangement and belt routing, or contact the seller with the complete engine model and original tensioner information before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the original part number, mounting configuration and belt routing before purchase.\u003c\/li\u003e\n  \u003cli\u003eDisconnect the battery and keep hands, clothing and tools away from moving belts and pulleys during testing.\u003c\/li\u003e\n  \u003cli\u003eUse the manufacturer's torque specifications and service procedures.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended if you are not familiar with marine engine accessory-drive service.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement and is not an Original Equipment Manufacturer 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 — We supply aftermarket components for a wide range of marine service applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Information\u003c\/strong\u003e — Check part numbers and complete engine details before ordering to help ensure the correct replacement.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCustomer Support\u003c\/strong\u003e — Contact us with your engine model and original part information if you need help confirming an application.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723799040315,"sku":"6D-8FRI-KFLZ","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/6D-8FRI-KFLZ.png?v=1763032095"}],"url":"https:\/\/seasierra.com\/collections\/crusader-4-stroke-300hp-marine-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}