{"title":"Crusader 4-Stroke 260HP Marine Engine Parts","description":"\u003csection id=\"hero\" style=\"padding:16px; border:1px solid #e5e7eb; border-radius:8px;\"\u003e\n  \u003cp\u003eThis page is for Crusader 4‑Stroke 260HP marine engines. It helps you find compatible parts and service information, including 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 this page to start browsing parts for this engine, and remember you can use the collection’s Filter \u0026amp; Sort controls to narrow results by horsepower, year range, and part category\/section.\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; text-decoration:none; border-radius:6px;\"\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 260HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eFind the serial\/model plate: typically on the intake manifold area, flame arrestor tag, or a bracket on the starboard side of the engine. Record the full model and serial number.\u003c\/li\u003e\n    \u003cli\u003eModel code basics: Crusader V8s are often listed as MP5.7L or 5.7 MPI. Suffixes may indicate rotation (LH\/RH), cooling system (RWC\/FWC), and accessory drive style.\u003c\/li\u003e\n    \u003cli\u003eRotation and accessory drive: Left‑hand vs right‑hand rotation affects starter, camshaft, and belt routing. Early 2000s engines may use V‑belt drives, while later variants use a serpentine belt system.\u003c\/li\u003e\n    \u003cli\u003eFuel system differences: Some engines use a Fuel Control Cell (FCC), while others use a returnless fuel system. Filter and pump parts differ—check your setup before ordering.\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\u003e5.7L V8 (MP 5.7L) — approx. 260 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;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eGM‑based 5.7L V8, EFI 4‑stroke marine engine; available in raw‑water or fresh‑water cooled configurations.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eMP5.7L \/ 5.7 MPI (LH or RH rotation), with either FCC or returnless fuel systems and V‑belt or serpentine accessory drives.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eStrong low‑to‑mid torque, broad parts availability, and proven reliability in inboard applications.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eRotation‑specific components (starter, cam, belt routing) and fuel\/cooling variants change part fit. Verify model, serial, rotation, and fuel system 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\u003eIntervals below are general guidelines; always follow your engine’s official service manual and operating environment recommendations.\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;\"\u003eEngine oil + filter\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eWarm engine, change oil and replace filter; use marine‑rated oil per manual.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/oil-filters\" style=\"text-decoration:underline;\"\u003eOil Filters\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eFuel filter \/ water separator\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eFCC or returnless systems use different elements—confirm type before ordering.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\" style=\"text-decoration:underline;\"\u003eFuel Filters\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eRaw‑water pump impeller\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eReplace proactively; heat and dry‑running shorten life.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/impellers\" style=\"text-decoration:underline;\"\u003eImpellers\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e200 hours or 2 years\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCheck gap and condition; replace as a set.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/spark-plug\" style=\"text-decoration:underline;\"\u003eSpark Plugs\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eAnodes (zincs)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect every 30–90 days\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eReplace when ~50% depleted; essential for corrosion protection.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\" style=\"text-decoration:underline;\"\u003eAnodes\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eAccessory belt (serpentine\/V‑belt)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect 100 hours; replace 2–3 years\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCheck for glazing\/cracks; serpentine and V‑belt parts are not interchangeable.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/belt\" style=\"text-decoration:underline;\"\u003eBelts\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eThermostat \u0026amp; cooling hoses\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect each season\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eReplace thermostat every 2–3 seasons; check for soft or cracked hoses.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/water-pumps\" style=\"text-decoration:underline;\"\u003eWater Pumps \u0026amp; Cooling\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eTransmission\/V‑drive fluid\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInitial 25–50 hrs; then 100–300 hrs or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eUse the transmission OEM‑specified fluid; change more often in heavy use.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/crusader-service-maintenance-kits\" style=\"text-decoration:underline;\"\u003eCrusader 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=\"padding:16px;\"\u003e\n  \u003ch2\u003eFrequently Used Parts Categories\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eService Kits \u0026amp; Tune‑Up: \u003ca href=\"https:\/\/seasierra.com\/collections\/crusader-service-maintenance-kits\" style=\"text-decoration:underline;\"\u003eCrusader Service \u0026amp; Maintenance Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCooling System: \u003ca href=\"https:\/\/seasierra.com\/collections\/impellers\" style=\"text-decoration:underline;\"\u003eImpellers\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/water-pumps\" style=\"text-decoration:underline;\"\u003eWater Pumps\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eFuel System: \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\" style=\"text-decoration:underline;\"\u003eFuel Filters\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-pumps\" style=\"text-decoration:underline;\"\u003eFuel Pumps\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eIgnition \u0026amp; Electrical: \u003ca href=\"https:\/\/seasierra.com\/collections\/starters\" style=\"text-decoration:underline;\"\u003eStarters\u003c\/a\u003e, \u003ca href=\"https:\/\/seasierra.com\/collections\/alternators\" style=\"text-decoration:underline;\"\u003eAlternators\u003c\/a\u003e, \u003ca href=\"https:\/\/seasierra.com\/collections\/sensors\" style=\"text-decoration:underline;\"\u003eSensors\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eBelts \u0026amp; Pulleys: \u003ca href=\"https:\/\/seasierra.com\/collections\/belt\" style=\"text-decoration:underline;\"\u003eBelts\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/tensioner-pulley\" style=\"text-decoration:underline;\"\u003eTensioner Pulleys\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eGaskets \u0026amp; Manifolds: \u003ca href=\"https:\/\/seasierra.com\/collections\/gaskets\" style=\"text-decoration:underline;\"\u003eGaskets\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/manifolds\" style=\"text-decoration:underline;\"\u003eManifolds\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCorrosion Protection: \u003ca href=\"https:\/\/seasierra.com\/collections\/anodes\" style=\"text-decoration:underline;\"\u003eAnodes\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%; 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;\"\u003eOverheat alarm or weak discharge\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect raw‑water pump impeller, intake strainer, and thermostat; verify sea‑water hoses and clamps.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eImpeller kit, thermostat, hose\/clamps, water pump, anodes\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eHard starting \/ rough idle\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCheck battery condition and cables, fuel filter element, and FCC\/low‑pressure pump operation.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eFuel filter, fuel pump, sensors (ECT\/MAP), spark plugs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003ePoor acceleration \/ power loss\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eVerify clean flame arrestor, fresh plugs, no water in fuel, and proper belt tension.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eSpark plugs, fuel filter\/water separator, belts, ignition components\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eOil pressure alarm at idle\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eConfirm oil level\/quality, check sender wiring and connection at the tee.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eOil filter, oil pressure sender\/switch, gaskets\/seals\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eTransmission running hot\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect transmission cooler seawater flow and change fluid per OEM spec.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eTransmission oil cooler, hoses, clamps, anodes\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\u003eMany service parts are shared across MP5.7L models, but rotation (LH vs RH), fuel system (FCC vs returnless), and accessory drive (V‑belt vs serpentine) change specific components. Confirm your model, serial, rotation, fuel system, and belt type before ordering.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should the raw‑water pump impeller be replaced?\u003c\/summary\u003e\n    \u003cp\u003eAnnually or every 100 hours—whichever comes first. Replace sooner if the engine was overheated or run dry, or if performance shows weak water flow.\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\u003ePerform an initial change early in service (around 25–50 hours), then every 100–300 hours or annually depending on usage and OEM guidance. Always use the fluid specified by the transmission manufacturer.\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\u003ePlease provide the Crusader model and serial number, rotation (LH\/RH), fuel system type (FCC or returnless), cooling system (RWC or FWC), and accessory drive style (V‑belt or serpentine). A photo of the engine nameplate and the part you’re replacing helps ensure accuracy.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"padding:16px; border-top:1px solid #e5e7eb;\"\u003e\n  \u003cp\u003eReady to find the right parts? Browse the main Crusader collection by engine model and service category, then use the Filter \u0026amp; Sort controls to narrow by your setup.\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; text-decoration:none; border-radius:6px;\"\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":[],"url":"https:\/\/seasierra.com\/collections\/crusader-4-stroke-260hp-marine-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}