{"product_id":"898253t27-ignition-coil-for-mercruiser-mercury-omc-volvo-penta-crusader-jlm-marine","title":"898253T27 Ignition Coil for Mercruiser Mercury OMC Volvo Penta Crusader | JLM Marine","description":"\u003ch2\u003e898253T27 Ignition Coil for Mercruiser Mercury OMC Volvo Penta Crusader\u003c\/h2\u003e\n\n\u003cp\u003eThis high-quality aftermarket ignition coil is engineered for \u003cstrong\u003eMercruiser, Mercury, OMC, Volvo Penta, and Crusader\u003c\/strong\u003e marine engines. Designed for use with \u003cstrong\u003eDelco EST ignition systems\u003c\/strong\u003e, it fits GM inline 4-cylinder, V6, and V8 applications including popular displacements such as \u003cstrong\u003e3.0L, 4.3L, 5.0L, 5.7L, 7.4L, and 8.2L\u003c\/strong\u003e engines (262, 305, 350, 377, 454 cubic inch models).\u003c\/p\u003e\n\n\u003cp\u003eThis coil directly replaces OEM part numbers \u003cstrong\u003e898253T27\u003c\/strong\u003e (Mercruiser\/Mercury), \u003cstrong\u003e817378T\u003c\/strong\u003e (OMC), \u003cstrong\u003e3854002\u003c\/strong\u003e and \u003cstrong\u003e3854002-7\u003c\/strong\u003e (Volvo Penta), and \u003cstrong\u003e7243200\u003c\/strong\u003e (Crusader), ensuring broad cross-brand compatibility for your ignition system needs.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eFits \u003cstrong\u003e4, 6, and 8 cylinder\u003c\/strong\u003e marine engines with Delco EST systems\u003c\/li\u003e\n\u003cli\u003eMounting holes designed for \u003cstrong\u003e1\/4\" bolts\u003c\/strong\u003e (enlargement may be needed for larger bolts)\u003c\/li\u003e\n\u003cli\u003eSuitable for popular Mercruiser applications including EFI, MPI, TBI, MAG, Black Scorpion, and Horizon series\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm equivalent part numbers across OEM and aftermarket brands:\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercruiser \/ Mercury\u003c\/td\u003e\n\u003ctd\u003e898253T27\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercruiser \/ Mercury\u003c\/td\u003e\n\u003ctd\u003e817378T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOMC\u003c\/td\u003e\n\u003ctd\u003e3854002\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e3854002\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolvo Penta\u003c\/td\u003e\n\u003ctd\u003e3854002-7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrusader\u003c\/td\u003e\n\u003ctd\u003e7243200\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e4.3L EFI 262 Mag (TBI)\u003c\/td\u003e\n\u003ctd\u003e1996-1998\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e350 MAG Bravo MPI\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e350 MAG MPI MIE\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e350 MAG EFI SKI\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003eBlack Scorpion\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003eBlack Scorpion Ski\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e377 Scorpion MCM\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e377 Scorpion SKI\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e454 EFI\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e454 MAG\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e454 MPI\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMercruiser\u003c\/td\u003e\n\u003ctd\u003e454 Horizon MIE\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGM \/ Delco EST\u003c\/td\u003e\n\u003ctd\u003eInline 4 engines\u003c\/td\u003e\n\u003ctd\u003e3.0L and similar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGM \/ Delco EST\u003c\/td\u003e\n\u003ctd\u003eV6 engines\u003c\/td\u003e\n\u003ctd\u003e4.3L and similar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGM \/ Delco EST\u003c\/td\u003e\n\u003ctd\u003eV8 engines\u003c\/td\u003e\n\u003ctd\u003e5.0L, 5.7L, 7.4L, 8.2L (305, 350, 454 CID)\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\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eIgnition System\u003c\/td\u003e\n\u003ctd\u003eDelco EST\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Engine Types\u003c\/td\u003e\n\u003ctd\u003eGM Inline 4, V6, V8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCylinder Count\u003c\/td\u003e\n\u003ctd\u003e4, 6, 8 cylinders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Hole Size\u003c\/td\u003e\n\u003ctd\u003e1\/4\" bolt holes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommon Displacements\u003c\/td\u003e\n\u003ctd\u003e3.0L, 4.3L, 5.0L, 5.7L, 7.4L, 8.2L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e1 × Ignition Coil\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Mounting holes are designed for 1\/4\" bolts. If your application requires larger bolts, you may need to enlarge the holes or select a different coil.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisconnect the battery:\u003c\/strong\u003e Remove the negative terminal to prevent electrical shock or short circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLocate the existing ignition coil:\u003c\/strong\u003e It is typically mounted near the distributor on the engine block.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisconnect electrical connectors:\u003c\/strong\u003e Carefully unplug the primary and secondary wire terminals from the old coil.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove mounting bolts:\u003c\/strong\u003e Use a socket wrench to unbolt the old coil from its bracket (typically 1\/4\" bolts).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInspect mounting holes:\u003c\/strong\u003e If your application uses larger bolts, you may need to enlarge the holes on the new coil carefully.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition the new coil:\u003c\/strong\u003e Align the new ignition coil with the mounting bracket and secure with appropriate bolts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReconnect electrical terminals:\u003c\/strong\u003e Attach the primary and secondary wires to the corresponding terminals on the new coil. Ensure connections are snug and corrosion-free.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble-check all connections:\u003c\/strong\u003e Verify that wiring is correct and terminals are secure before proceeding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReconnect the battery:\u003c\/strong\u003e Reattach the negative terminal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest engine start:\u003c\/strong\u003e Start the engine and listen for smooth ignition. Check for misfires or irregular operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInspect for arcing or loose connections:\u003c\/strong\u003e With the engine running, visually confirm no sparking around terminals or wires.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure all components:\u003c\/strong\u003e Ensure the coil is firmly mounted and all wiring is routed away from hot or moving parts.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this ignition coil fits my engine?\u003c\/strong\u003e\u003cbr\u003e\nA: Cross-reference your current part number with the numbers listed in our Part Number Cross-Reference table (898253T27, 817378T, 3854002, 3854002-7, 7243200). Also confirm your engine uses a Delco EST ignition system and matches one of the compatible models listed above.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: My mounting bolts are larger than 1\/4\". Will this coil work?\u003c\/strong\u003e\u003cbr\u003e\nA: The coil is designed with 1\/4\" mounting holes. If your application requires larger bolts, you may carefully enlarge the holes with a drill, or consider purchasing a coil with larger pre-drilled holes to avoid modification.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs that my ignition coil is failing?\u003c\/strong\u003e\u003cbr\u003e\nA: Common symptoms include engine misfires, rough idle, difficulty starting, reduced power or acceleration, poor fuel economy, and the check engine light illuminating. If you experience these issues, testing or replacing the ignition coil is a good troubleshooting step.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace my ignition coil?\u003c\/strong\u003e\u003cbr\u003e\nA: Ignition coils typically do not have a fixed replacement interval and are replaced as needed when they fail. Regular inspection during tune-ups and prompt replacement at the first sign of failure will help maintain engine performance and reliability.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is this an OEM part or aftermarket?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n\u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":51981021380921,"sku":"24IC475","price":36.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/12_1572b5ba-a89c-4ef9-97cd-d65765bb8992.jpg?v=1772414706","url":"https:\/\/jlmmarine.com\/products\/898253t27-ignition-coil-for-mercruiser-mercury-omc-volvo-penta-crusader-jlm-marine","provider":"JLM Marine Boat Parts Limited","version":"1.0","type":"link"}