{"title":"Crusader 496 cid V8 4-Stroke Marine Engine Parts","description":"\u003csection id=\"hero\" style=\"max-width: 980px; margin: 0 auto; padding: 16px 12px;\"\u003e\n  \u003cp\u003eThis page is for Crusader 4‑Stroke 496 cid V8 marine engines. It helps you quickly find compatible parts and practical service information, including maintenance tips, common replacement parts, and troubleshooting guidance. You can also browse our main Crusader collection, and at the bottom of this page you’ll find links to start browsing parts for this engine. On the collection page, use the Filter \u0026amp; Sort controls to narrow results by horsepower, year range, and part category.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/crusader-service-maintenance-kits\" style=\"display:inline-block; padding:10px 16px; background:#0a5; 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=\"max-width: 980px; margin: 0 auto; padding: 12px;\"\u003e\n  \u003ch2\u003eHow to Identify Your 496 cid V8 Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eLocate the engine’s identification tag\/nameplate on or near the intake plenum, valve cover, or front accessory bracket. Record the full model and serial number.\u003c\/li\u003e\n    \u003cli\u003eNote fuel system layout: FCC (fuel control cell) vs. returnless EFI. Filter types, seals, and fuel hose routing differ by layout.\u003c\/li\u003e\n    \u003cli\u003eConfirm cooling configuration: raw‑water cooled or fresh‑water cooled (heat exchanger). Hose kits, anodes, and thermostat housings vary.\u003c\/li\u003e\n    \u003cli\u003eCheck engine rotation (LH\/RH) and belt system (V‑belt vs. serpentine). These affect raw‑water pump pulleys, belts, and tensioners.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\" style=\"max-width: 980px; margin: 0 auto; padding: 12px;\"\u003e\n  \u003ch2\u003ePlatform Overview\u003c\/h2\u003e\n  \u003ch3\u003eCrusader 8.1L (496 cid) V8 EFI\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 #eee;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003e8.1L (496 cid) V8, 4‑stroke, multi‑port EFI; raw‑water or fresh‑water (heat‑exchanger) cooling; LH or RH rotation depending on installation.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eCrusader 8.1L\/496 cid V8 EFI variants used in direct‑drive or V‑drive inboards; accessory drives may be V‑belt or serpentine by year.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eStrong mid‑range torque, reliable EFI starting, broad aftermarket support for ignition, fuel, and cooling components.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eFuel layout (FCC vs. returnless), cooling type, belt system, and rotation influence parts selection. Verify these details before ordering filters, impellers, belts, and thermostat components.\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: 980px; margin: 0 auto; padding: 12px;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are general guidelines for recreational use. Always follow the official Crusader service manual for your exact model and operating environment.\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 #eee;\"\u003eEngine oil + filter\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eUse marine‑rated 4‑stroke oil; warm engine before draining. Replace the oil filter each service.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/oil-filters\"\u003eOil Filters\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eTransmission fluid\/filter\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003ePer transmission spec or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eIntervals vary by Velvet Drive\/Hurth\/ZF. Inspect cooler and hoses for leaks and kinks.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\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 #eee;\"\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eMatch heat range and gap to ECU calibration; replace as a set.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/spark-plug\"\u003eSpark Plugs\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003ePrimary\/inline fuel filter(s)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eInspect 50 hours; replace 100 hours or as needed\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eFCC vs. returnless systems use different elements and seals. Drain water separators frequently.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\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 #eee;\"\u003eRaw‑water pump impeller\/kit\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eEvery season or 100 hours\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eReplace proactively to prevent overheating. Inspect pump cam and cover plate.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\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 #eee;\"\u003eAnodes (heat exchanger\/engine)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eInspect monthly; replace when \u0026gt;50% depleted\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eCritical for corrosion control on FWC systems with heat exchangers.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\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 #eee;\"\u003eAccessory belt (V‑belt or serpentine)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eInspect 50 hours; replace 200 hours or as needed\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eCheck tensioner\/idler on serpentine setups; re‑tension or replace if noisy or cracked.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/belt\"\u003eBelts\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eThermostat \u0026amp; cooling inspection\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eInspect annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eVerify thermostat operation, hose condition, and clean heat‑exchanger end caps if equipped.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/water-pumps\"\u003eWater Pumps\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: 980px; margin: 0 auto; padding: 12px;\"\u003e\n  \u003ch2\u003eFrequently Used Parts Categories\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eRoutine Service – \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 – \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 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\/starters\"\u003eStarters\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCharging – \u003ca href=\"https:\/\/seasierra.com\/collections\/alternators\"\u003eAlternators\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\u003eBelts \u0026amp; Tensioners – \u003ca href=\"https:\/\/seasierra.com\/collections\/belt\"\u003eBelts\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/tensioner-pulley\"\u003eTensioner Pulleys\u003c\/a\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\" style=\"max-width: 980px; margin: 0 auto; padding: 12px;\"\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 #eee;\"\u003eHigh engine temperature \/ overheat alarm\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eInspect raw‑water impeller, belt tension, thermostat, heat‑exchanger end caps\/anodes, and seawater intake screen.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eWater pump impeller kit, thermostat, belts, anodes\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003ePoor acceleration or power loss\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eCheck FCC\/primary fuel filter for restriction, verify fuel quality, inspect plugs and ignition leads, and look for intake\/vacuum leaks.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eFuel filters, fuel pump, spark plugs, sensors\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eHard starting \/ rough idle\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eTest battery and grounds, examine IAC\/MAP sensor plumbing, confirm clean fuel and proper filter service.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eStarters, sensors, fuel filters, spark plugs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eLow oil pressure warning\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eVerify oil level\/grade, replace oil filter, and test the pressure sender; inspect for leaks at remote oil filter headers if fitted.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px; border-bottom:1px solid #eee;\"\u003eOil filter, sensors, hoses\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: 980px; margin: 0 auto; padding: 12px;\"\u003e\n  \u003ch2\u003eFAQs\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre parts interchangeable between different years or fuel\/cooling layouts?\u003c\/summary\u003e\n    \u003cp\u003eNot always. Differences in fuel layout (FCC vs. returnless), accessory drive (V‑belt vs. serpentine), thermostat housings, and LH\/RH rotation can change fitment. Use your full model\/serial and configuration to confirm.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should I replace the raw‑water pump impeller?\u003c\/summary\u003e\n    \u003cp\u003eTypically every season or 100 hours. Replace sooner if water flow is weak, temperature runs high, or the boat sat unused for an extended period. Inspect the pump cam and cover plate for scoring.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should transmission fluid be changed?\u003c\/summary\u003e\n    \u003cp\u003eFollow the transmission manufacturer’s schedule. Many recreational inboards service annually or every 100–200 hours. Inspect the cooler and lines at each service.\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 engine model and serial, rotation (LH\/RH), fuel system type (FCC vs. returnless), cooling type (raw‑water vs. heat‑exchanger), and a clear photo 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=\"max-width: 980px; margin: 0 auto; padding: 16px 12px;\"\u003e\n  \u003cp\u003eReady to find the right parts? Browse our Crusader collection by model details, year, and configuration to zero in on compatible components.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/crusader-service-maintenance-kits\" style=\"display:inline-block; padding:10px 16px; background:#0a5; color:#fff; text-decoration:none; border-radius:6px;\"\u003eShop Crusader Parts\u003c\/a\u003e\n  \u003cp style=\"margin-top:8px; 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":"fuel-injector-fits-mercury-mercruiser-496-mag-8-1l-engines-replaces-881693002","title":"100% New Fuel Injector for Mercury MerCruiser MPI 8.1L V8 and Volvo Penta 8.1L\/496 CID Engines","description":"\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 *\/\ntable.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\ntable.ss-table th, table.ss-table td {\n  padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n}\n\ntable.ss-table th {\n  white-space:nowrap;\n  word-break:normal;\n  letter-spacing:normal;\n  font-weight:600;\n  background:#f8fafc;\n}\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\u003csection\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003e100% new aftermarket fuel injector\u003c\/strong\u003e is designed for Mercury MerCruiser MPI 8.1L V8 applications, including 496 Mag and 496 Mag HO engines, as well as Volvo Penta marine 8.1L and 496 CID engines. It is sold as one individual injector and is intended to replace the original injector when the applicable part number and engine configuration match.\u003c\/p\u003e\n\u003cp\u003eThe Sierra catalog identifies reference number \u003cstrong\u003e18-7698\u003c\/strong\u003e as a fuel injector that replaces Mercury part number \u003cstrong\u003e881693002\u003c\/strong\u003e and fits MCM 496 Mag and HO engines and MIE 8.1S and HO applications. The company catalog also lists Mercury references \u003cstrong\u003e8M0221353\u003c\/strong\u003e and \u003cstrong\u003e881693\u003c\/strong\u003e, Volvo Penta reference \u003cstrong\u003e3861278\u003c\/strong\u003e, and Crusader reference \u003cstrong\u003eRA087006\u003c\/strong\u003e for this product family.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e100% new\u003c\/strong\u003e aftermarket fuel injector; not a used or remanufactured component.\u003c\/li\u003e\n  \u003cli\u003eSold individually for replacement of one injector.\u003c\/li\u003e\n  \u003cli\u003eSuitable for specified Mercury MerCruiser and Volvo Penta 8.1L\/496 CID marine applications when the original reference and connector match.\u003c\/li\u003e\n  \u003cli\u003eVerify the original injector and engine details before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eThe following references are provided for identification and cross-reference purposes. A number appearing in this table does not replace the need to verify the engine application, connector, and original injector.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand or Source\u003c\/th\u003e\n        \u003cth\u003eReference Number\u003c\/th\u003e\n        \u003cth\u003eRelationship\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n        \u003ctd\u003e881693002\u003c\/td\u003e\n        \u003ctd\u003eReplacement reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n        \u003ctd\u003e8M0221353\u003c\/td\u003e\n        \u003ctd\u003eCompany-listed reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n        \u003ctd\u003e881693\u003c\/td\u003e\n        \u003ctd\u003eCompany-listed reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003e3861278\u003c\/td\u003e\n        \u003ctd\u003eCompany-listed reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra Marine\u003c\/td\u003e\n        \u003ctd\u003e18-7698\u003c\/td\u003e\n        \u003ctd\u003eAftermarket cross-reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCrusader Marine\u003c\/td\u003e\n        \u003ctd\u003eRA087006\u003c\/td\u003e\n        \u003ctd\u003eCompany-listed cross-reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMallory Marine\u003c\/td\u003e\n        \u003ctd\u003e9-33103\u003c\/td\u003e\n        \u003ctd\u003eCompany-listed cross-reference\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\u003eUse the following application information as a guide, then confirm the part number on your original injector. Model, engine configuration, year, and serial-number conditions must match the application for a correct fit.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine and Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eEngine or Application\u003c\/th\u003e\n        \u003cth\u003eFuel System\u003c\/th\u003e\n        \u003cth\u003eDisplacement\u003c\/th\u003e\n        \u003cth\u003eReference\u003c\/th\u003e\n        \u003cth\u003eFitment Note\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n        \u003ctd\u003e496 Mag\u003c\/td\u003e\n        \u003ctd\u003eMPI\u003c\/td\u003e\n        \u003ctd\u003e8.1L V8 \/ 496 CID\u003c\/td\u003e\n        \u003ctd\u003e881693002\u003c\/td\u003e\n        \u003ctd\u003eApplication listed for the fuel injector reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n        \u003ctd\u003e496 Mag HO\u003c\/td\u003e\n        \u003ctd\u003eMPI\u003c\/td\u003e\n        \u003ctd\u003e8.1L V8 \/ 496 CID\u003c\/td\u003e\n        \u003ctd\u003e881693002\u003c\/td\u003e\n        \u003ctd\u003eApplication listed for the fuel injector reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n        \u003ctd\u003e8.1S\u003c\/td\u003e\n        \u003ctd\u003eMPI\u003c\/td\u003e\n        \u003ctd\u003e8.1L V8 \/ 496 CID\u003c\/td\u003e\n        \u003ctd\u003e881693002\u003c\/td\u003e\n        \u003ctd\u003eApplication listed for the fuel injector reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury MerCruiser\u003c\/td\u003e\n        \u003ctd\u003e8.1L HO\u003c\/td\u003e\n        \u003ctd\u003eMPI\u003c\/td\u003e\n        \u003ctd\u003e8.1L V8 \/ 496 CID\u003c\/td\u003e\n        \u003ctd\u003e881693002\u003c\/td\u003e\n        \u003ctd\u003eApplication listed for the fuel injector reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eVolvo Penta\u003c\/td\u003e\n        \u003ctd\u003eMarine 8.1L \/ 496 CID\u003c\/td\u003e\n        \u003ctd\u003eMPI\u003c\/td\u003e\n        \u003ctd\u003e8.1L V8 \/ 496 CID\u003c\/td\u003e\n        \u003ctd\u003e3861278\u003c\/td\u003e\n        \u003ctd\u003eCompany-listed fitment; verify the original part number\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eCrusader Marine\u003c\/td\u003e\n        \u003ctd\u003e8.1L marine applications\u003c\/td\u003e\n        \u003ctd\u003eMPI\u003c\/td\u003e\n        \u003ctd\u003e8.1L V8\u003c\/td\u003e\n        \u003ctd\u003eRA087006\u003c\/td\u003e\n        \u003ctd\u003eCross-reference only; confirm the application before purchase\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003eDo not rely on engine displacement alone. Compare the original injector, electrical connector, mounting arrangement, and applicable manufacturer reference before installation.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n  \u003cdd\u003eFuel injector\u003c\/dd\u003e\n  \u003cdt\u003eCondition\u003c\/dt\u003e\n  \u003cdd\u003e100% new aftermarket component\u003c\/dd\u003e\n  \u003cdt\u003eQuantity\u003c\/dt\u003e\n  \u003cdd\u003eOne injector\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eMarine gasoline MPI fuel systems for specified 8.1L V8 \/ 496 CID engines\u003c\/dd\u003e\n  \u003cdt\u003ePrimary Reference\u003c\/dt\u003e\n  \u003cdd\u003eMercury MerCruiser 881693002\u003c\/dd\u003e\n  \u003cdt\u003eAdditional Company-Listed References\u003c\/dt\u003e\n  \u003cdd\u003e8M0221353, 881693, Volvo Penta 3861278, Crusader RA087006\u003c\/dd\u003e\n  \u003cdt\u003eAftermarket Cross-References\u003c\/dt\u003e\n  \u003cdd\u003eSierra 18-7698; Mallory 9-33103\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 100% new fuel injector\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the battery and follow the engine manufacturer's procedure for safely relieving fuel-system pressure.\u003c\/li\u003e\n  \u003cli\u003eConfirm that the replacement injector matches the original injector, connector, mounting arrangement, and applicable reference number.\u003c\/li\u003e\n  \u003cli\u003eDisconnect the electrical connector from the injector.\u003c\/li\u003e\n  \u003cli\u003eRemove the fuel rail or injector retaining hardware according to the engine service procedure.\u003c\/li\u003e\n  \u003cli\u003eRemove the old injector carefully and protect the fuel rail and sealing surfaces from dirt or damage.\u003c\/li\u003e\n  \u003cli\u003eInstall the replacement injector using clean, properly lubricated seals where required by the manufacturer's procedure.\u003c\/li\u003e\n  \u003cli\u003eSecure the injector and reinstall the fuel rail and retaining hardware using the manufacturer's specified torque.\u003c\/li\u003e\n  \u003cli\u003eReconnect the electrical connector and battery.\u003c\/li\u003e\n  \u003cli\u003ePrime the fuel system as specified by the engine manufacturer, then inspect the injector and fuel rail for leaks before operating the engine.\u003c\/li\u003e\n  \u003cli\u003eStart the engine only after confirming that there are no fuel leaks, and check for proper operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eFuel-system work can create a fire hazard. Use appropriate ventilation, keep ignition sources away, and have installation performed by a qualified marine technician when necessary.\u003c\/p\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this injector sold as a set?\u003c\/summary\u003e\u003cp\u003eNo. This product is sold as one individual 100% new fuel injector. If replacing multiple injectors, order the required quantity separately.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhich engines is this injector intended for?\u003c\/summary\u003e\u003cp\u003eThe company-listed application is Mercury MerCruiser MPI 8.1L V8. Related listed applications include Mercury 496 Mag and 496 Mag HO, Mercury 8.1S and 8.1L HO, and Volvo Penta marine 8.1L\/496 CID engines. Confirm the original reference and engine configuration before ordering.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes it replace Mercury reference 881693002?\u003c\/summary\u003e\u003cp\u003eYes. The company catalog lists 881693002 as a replacement reference, and the Sierra catalog identifies 18-7698 as a fuel injector that replaces 881693002 for the specified 496 Mag, 496 Mag HO, 8.1S, and HO applications.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this a genuine Mercury or Volvo Penta part?\u003c\/summary\u003e\u003cp\u003eNo. This is a 100% new aftermarket replacement injector. Mercury, Volvo Penta, Sierra, and other names and numbers are used only to identify compatible reference applications.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDo I need to replace all injectors at once?\u003c\/summary\u003e\u003cp\u003eNot necessarily. Replace the failed injector or the quantity recommended by your marine technician, and follow the engine manufacturer's service guidance. Matching the correct injector across the engine is important for consistent fuel delivery.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs programming or ECU tuning required?\u003c\/summary\u003e\u003cp\u003eA stock replacement injector normally does not require programming, but the correct application and injector specification must be confirmed before installation. Follow the engine manufacturer's service instructions.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I confirm compatibility?\u003c\/summary\u003e\u003cp\u003eCompare your original injector's manufacturer reference, engine model, fuel-injection system, connector, and mounting arrangement with the information on this page. When the details do not match, contact a qualified marine technician before purchasing.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat are the shipping speed and cost?\u003c\/summary\u003e\u003cp\u003eShipping availability, delivery time, and cost are calculated at checkout based on destination and service selected.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\u003cp\u003eWarranty and return eligibility are governed by the current store policies. Review the applicable policy before installation, because installed or used fuel-system components may have different return requirements.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Information\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the original injector reference and complete engine application before purchase.\u003c\/li\u003e\n  \u003cli\u003eDo not rely on displacement or model name alone; year, fuel system, connector, and serial-number conditions may affect fitment.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement component, not a genuine OEM component.\u003c\/li\u003e\n  \u003cli\u003eRelieve fuel pressure before service and inspect carefully for leaks after installation.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended for fuel-system work.\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 replacement components for a range of marine engine and sterndrive applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Listings\u003c\/strong\u003e — Product references and fitment information are provided to help you compare the replacement with your original part.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupport Before Installation\u003c\/strong\u003e — If your engine details or original part number differ from the information shown, verify compatibility before ordering or installing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723978346811,"sku":"25FUI444","price":42.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/25FUI444_5be3f190-9639-4f35-aa73-4da7a6092634.jpg?v=1763039112"}],"url":"https:\/\/seasierra.com\/collections\/crusader-496-cid-v8-4-stroke-marine-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}