{"product_id":"ignition-coil-and-iridium-spark-plugs-for-ford-f-250-1997-1999-4-6l","title":"Ignition Coil and Iridium Spark Plugs for Ford F-250 (1997-1999) 4.6L","description":"\u003ch2\u003eDirect-Replacement Ignition Coil and Iridium Spark Plug Kit for 1997-1999 Ford F-250\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003ePrimary Function:\u003c\/strong\u003e Restores factory secondary ignition output and combustion stability across all eight cylinders to resolve primary misfires, rough idle, and spark blowout under load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock F-250 Secondary Ignition Degradation\u003c\/h3\u003e\n\u003cp\u003eThe factory coil-on-plug assemblies on the 4.6L Modular V8 endure severe thermal cycling in deep cylinder head plug wells. Over time, engine heat soak degrades the internal epoxy potting and winding insulation, leading to dielectric breakdown, high-voltage leakage, and misfire codes (P0301-P0308). Concurrently, traditional standard plugs suffer rapid electrode erosion, widening gap clearance and placing excessive voltage demand on aging coil primaries during sustained towing.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis direct-fit overhaul kit integrates eight high-output coil packs with eight fine-wire iridium spark plugs. The coils utilize reinforced internal copper windings and weather-sealed blade terminals designed to resist high underhood temperatures and moisture ingress. Paired with corrosion-resistant iridium electrodes, this assembly lowers overall ionization voltage requirements, sharpens throttle response, and provides stable arc transfer under lean-burn cruise conditions.\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;\"\u003e1997-1999 Ford F-250\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;\"\u003e4.6L Modular SOHC V8 \/ PN96\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;\"\u003e220 hp \/ 290 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;\"\u003eDG508, DG491, FD503, DCE261, DCE263, DG481, FD493\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1997 Ford F-250 4.6L V8 (XL, XLT, Lariat)\u003c\/li\u003e\n  \u003cli\u003e1998 Ford F-250 4.6L V8 (XL, XLT, Lariat)\u003c\/li\u003e\n  \u003cli\u003e1999 Ford F-250 4.6L V8 (XL, XLT, Lariat)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Ford Heavy-Duty Standard\u003c\/h3\u003e\n\u003cp\u003eBuilt to handle the sustained thermal demands of heavy payload hauling and towing, this matched ignition system delivers dependable cold starts, smooth idle stability, and restored operational efficiency for your working truck.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50448499212536,"sku":"DS-ERMC4H8GZ","price":89.95,"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-250-1997-1999-4-6l-1.jpg?v=1788647596","url":"https:\/\/performancechiptuning.com\/fr\/products\/ignition-coil-and-iridium-spark-plugs-for-ford-f-250-1997-1999-4-6l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}