{"product_id":"ignition-coil-and-iridium-spark-plugs-for-ford-f-350-2005-2008-5-4l","title":"Ignition Coil and Iridium Spark Plugs for Ford F-350 (2005-2008) 5.4L","description":"\u003ch2\u003eDirect-Replacement High-Output Ignition Kit for 2005-2008 Ford F-350\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eComplete Secondary Ignition Refresh:\u003c\/strong\u003e Replaces degraded factory coil packs and worn plugs to eliminate cylinder misfires and restore precise combustion under heavy payload and towing demands.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock F-350 Ignition Breakdown\u003c\/h3\u003e\n\u003cp\u003eThe 5.4L 3-Valve Modular V8 operates under high thermal stress in heavy-duty commercial applications. Over time, OEM coil housings suffer from heat soak and dielectric breakdown, leading to internal secondary winding short-circuits and spark blowout under load. Combined with electrode wear on aged plugs, this generates erratic idle, hesitations under torque load, and decreased fuel efficiency.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis complete 8-cylinder service kit features coil-on-plug units wound with high-conductivity oxygen-free copper, sealed in high-dielectric epoxy potting to isolate secondary voltage and eliminate micro-arcing. Paired with fine-wire iridium spark plugs, the system reduces required firing voltage, provides superior resistance to carbon tracking, and maintains precise spark kernel delivery through extreme combustion pressures.\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;\"\u003e2005-2008 Ford F-350 Super Duty\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;\"\u003e5.4L Triton 3V V8 (Modular) \/ P221\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;\"\u003e300 hp \/ 365 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;\"\u003eDG511, DG-511, FD508, SP546, UF537\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2005 Ford F-350 Super Duty 5.4L V8 (XL, XLT, Lariat, King Ranch)\u003c\/li\u003e\n  \u003cli\u003e2006 Ford F-350 Super Duty 5.4L V8 (XL, XLT, Lariat, King Ranch)\u003c\/li\u003e\n  \u003cli\u003e2007 Ford F-350 Super Duty 5.4L V8 (XL, XLT, Lariat, King Ranch)\u003c\/li\u003e\n  \u003cli\u003e2008 Ford F-350 Super Duty 5.4L V8 (XL, XLT, Lariat, King Ranch, FX4)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Ford Heavy-Duty Standard\u003c\/h3\u003e\n\u003cp\u003eDesigned to meet severe-duty commercial standards, this ignition package delivers consistent high-voltage arcs across continuous high-RPM grade climbs and heavy towing without thermal degradation or spark blowout.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50452213006584,"sku":"DS-EJG6EGCBR","price":110.95,"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-ford-f-350-2005-2008-5-4l-1.jpg?v=1788720937","url":"https:\/\/performancechiptuning.com\/es\/products\/ignition-coil-and-iridium-spark-plugs-for-ford-f-350-2005-2008-5-4l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}