{"product_id":"ignition-coil-iridium-spark-plugs-for-toyota-crown-mark-x-2004-2019-2-5l-3-5l-v6","title":"Ignition Coil \u0026 Iridium Spark Plugs for Toyota Crown Mark X (2004-2019) 2.5L 3.5L V6","description":"\u003ch2\u003eHigh-Output Ignition Coil \u0026amp; Iridium Spark Plug Kit for 2004-2019 Toyota Crown\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eReplaces degraded factory ignition components with upgraded copper-wound coils and iridium spark plugs to restore optimal spark energy and resolve intermittent misfires under load.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock GR-Series Ignition Weakness\u003c\/h3\u003e\n\u003cp\u003eOver time, the factory ignition coils in the Toyota 4GR-FSE and 2GR-FSE V6 engines are prone to thermal degradation. Positioned directly above the exhaust components in the engine bank, these coils experience severe heat soak cycles. This constant thermal stress breaks down the internal epoxy potting and primary windings, leading to increased electrical resistance, weak spark output, and eventually, erratic cylinder misfires. Additionally, standard spark plug electrodes erode over tens of thousands of miles, increasing the spark gap and forcing the coils to work harder, which drastically accelerates their failure rate.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive ignition kit engineers out factory thermal vulnerabilities. The upgraded coils utilize heavy-gauge copper wire for primary and secondary windings, significantly lowering internal electrical resistance for stronger magnetic field generation. High-dielectric epoxy resin completely seals the internal circuitry, effectively resisting the severe heat soak typical of the GR engine bay. Paired with fine-wire Iridium spark plugs—which require less voltage to bridge the gap while heavily resisting electrode erosion—this kit increases overall spark energy by 15%. This ensures a smoother idle, precise throttle response, and complete fuel combustion across the entire RPM range.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px;\"\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e2004-2019 Toyota Crown \/ Mark X\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eEngine \/ Chassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e4GR-FSE, 2GR-FSE \/ S180, S200, S210, X120, X130\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eStock Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e200-315 hp \/ 192-280 lb-ft (Approx)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eUF507, UF630, UF487, 90919-02250, 90919-02256, 90919-C2001\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2004-2019 Toyota Crown 2.5L V6 (4GR-FSE)\u003c\/li\u003e\n  \u003cli\u003e2004-2019 Toyota Crown 3.5L V6 (2GR-FSE \/ 2GR-FKS)\u003c\/li\u003e\n  \u003cli\u003e2004-2019 Toyota Mark X 2.5L V6 (4GR-FSE)\u003c\/li\u003e\n  \u003cli\u003e2004-2019 Toyota Mark X 3.5L V6 (2GR-FSE)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Toyota Standard\u003c\/h3\u003e\n\u003cp\u003eRestoring the smooth, linear power delivery of your JDM V6 is critical to factory drivability. This comprehensive ignition overhaul ensures your Crown or Mark X maintains its renowned refinement and reliable acceleration without dreaded hesitation or check engine lights.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50062576746744,"sku":"DS-EBSHJA1Z4","price":104.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-iridium-spark-plugs-for-toyota-crown-mark-x-2004-2019-2-5l-3-5l-v6-1.jpg?v=1785169616","url":"https:\/\/performancechiptuning.com\/products\/ignition-coil-iridium-spark-plugs-for-toyota-crown-mark-x-2004-2019-2-5l-3-5l-v6","provider":"Performance Chip Tuning","version":"1.0","type":"link"}