{"product_id":"ignition-coil-and-iridium-spark-plugs-for-infiniti-fx35-2003-2008-3-5l","title":"Ignition Coil and Iridium Spark Plugs for Infiniti FX35 (2003-2008) 3.5L","description":"\u003ch2\u003eDirect-Fit Ignition Coil \u0026amp; Iridium Spark Plug Service Kit for 2003-2008 Infiniti FX35\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003ePrimary Function:\u003c\/strong\u003e Restores factory secondary ignition voltage and resolves multi-cylinder misfires by replacing degraded coil packs and worn spark plugs with high-dielectric assemblies and fine-wire iridium plugs.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock FX35 Ignition Breakdown\u003c\/h3\u003e\n\u003cp\u003eThe VQ35DE platform produces severe thermal cycling within the tight S50 engine bay, leading to premature breakdown of the factory epoxy potting and internal copper windings within the OEM ignition coils. Over time, high resistance leads to carbon tracking along the spark plug boots, causing intermittent secondary ignition dropouts, hesitation under load, poor cold-start combustion, and persistent P0300 through P0306 diagnostic trouble codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive ignition service kit utilizes upgraded high-conductivity copper windings insulated with superior dielectric epoxy to resist micro-cracking and heat soak. Paired with long-life fine-wire iridium spark plugs, the kit ensures low ignition voltage demand, stable flame kernel propagation, and a consistent high-energy spark across the entire RPM range. Direct-fit blade connectors and high-temp silicone boots prevent moisture intrusion and voltage arcing.\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;\"\u003e2003-2008 Infiniti FX35\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;\"\u003e3.5L VQ35DE V6 \/ S50\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;\"\u003e280 hp \/ 270 lb-ft (Approx)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003ePart Number \/ Cross Reference\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eUF349, C1406, 50075, 5C1403, 5C1793, C1736, E379, 52-1753, IC479, 22448-8J111, 22448-8J115, 22433-8J115, 22433-8J11C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2003 Infiniti FX35 Base 3.5L V6 (VQ35DE \/ S50) - RWD \u0026amp; AWD\u003c\/li\u003e\n  \u003cli\u003e2004 Infiniti FX35 Base 3.5L V6 (VQ35DE \/ S50) - RWD \u0026amp; AWD\u003c\/li\u003e\n  \u003cli\u003e2005 Infiniti FX35 Base 3.5L V6 (VQ35DE \/ S50) - RWD \u0026amp; AWD\u003c\/li\u003e\n  \u003cli\u003e2006 Infiniti FX35 Base 3.5L V6 (VQ35DE \/ S50) - RWD \u0026amp; AWD\u003c\/li\u003e\n  \u003cli\u003e2007 Infiniti FX35 Base 3.5L V6 (VQ35DE \/ S50) - RWD \u0026amp; AWD\u003c\/li\u003e\n  \u003cli\u003e2008 Infiniti FX35 Base 3.5L V6 (VQ35DE \/ S50) - RWD \u0026amp; AWD\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Infiniti VQ Performance Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to meet the rapid throttle response and high-revving demands of the Nissan\/Infiniti VQ architecture, this kit eliminates cylinder imbalances, optimizes air-fuel mixture ignition, and protects downstream catalytic converters from unburnt fuel contamination.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50448477094136,"sku":"DS-ED6EV1WZX","price":103.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-and-iridium-spark-plugs-for-infiniti-fx35-2003-2008-3-5l-1.jpg?v=1788646847","url":"https:\/\/performancechiptuning.com\/products\/ignition-coil-and-iridium-spark-plugs-for-infiniti-fx35-2003-2008-3-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}