{"product_id":"ignition-coil-spark-plugs-for-ford-f-350-1999-2004-6-8l","title":"Ignition Coil + Spark Plugs for Ford F-350 (1999-2004) 6.8L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Ignition Coil and Spark Plug Kit for 1999-2004 Ford F-350 (P131)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The ignition coil and NGK spark plug kit replaces deteriorated factory ignition components on the 1999-2004 Ford F-350 to restore peak secondary voltage output, eliminate cylinder misfires, and stabilize heavy-load combustion.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Ford F-350 Ignition Breakdown\u003c\/h3\u003e\n\u003cp\u003eThe 2-valve \u003cstrong\u003e6.8L Triton V10\u003c\/strong\u003e operates under intense engine bay thermal cycles, especially during heavy payload and trailer towing. Over time, factory \u003cstrong\u003eDG-508\u003c\/strong\u003e coil packs suffer internal dielectric breakdown, micro-cracking across the magnetic core, and thermal fatigue in the silicone boots. Degraded insulation allows high-voltage arc-through to the cylinder head rather than the plug gap, resulting in hesitation under load, erratic idle, P0300-P0310 diagnostic trouble codes, and unburned fuel entering the exhaust stream.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis complete 10-cylinder overhaul kit delivers robust high-dielectric epoxy potting and primary\/secondary copper windings engineered to resist prolonged heat soak. Paired with genuine \u003cstrong\u003eNGK\u003c\/strong\u003e spark plugs featuring precision-rolled threads and trivalent metal plating, this setup maximizes spark energy, resists flashover, and mitigates the blow-by tendencies common to early Modular modular cylinder heads. The oil- and ozone-resistant boots ensure an airtight, moisture-free seal down the deep spark plug wells.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e10 Ignition Coils\u003c\/li\u003e\n  \u003cli\u003e10 NGK Spark Plugs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e1999-2004 Ford F-350\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e\n\u003cstrong\u003e6.8L Triton V10\u003c\/strong\u003e \/ \u003cstrong\u003eP131\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e310 hp \/ 425 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eFD503, FD503F, F7TU-12A366AB, F7TU-2A366BA, C566, F7TU12A366AB, GN10164, 1L2U12029AA, F7TZ-1029CC, 1L2U12A366, 250534733, SKIC001, C500, CFD503, 5C1412, COP9, 0221504704, 44688, 6736000, 8242, 1L2Z 12029-AA, 3W7Z 12029-AA, F7TZ 12029-CA, C1417, C1139, 1788222, 48688, 601000, DG508, DG-508, DG457, DG-457, DG472, DF-472, F523, F-523\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1999-2004 Ford F-350 Super Duty 6.8L V10 Gas\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the P131 F-350?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 1999-2004 Ford F-350 equipped with the \u003cstrong\u003e6.8L Triton V10\u003c\/strong\u003e engine; spark plug wires are not included as this is a coil-on-plug setup.\u003c\/p\u003e\n\n\u003ch4\u003eWhat torque procedure should be used during installation?\u003c\/h4\u003e\n\u003cp\u003eTorque spark plugs strictly to factory specification into dry threads, and hand-tighten coil retaining bolts without overtightening to prevent cracking the brass mounting inserts.\u003c\/p\u003e\n\n\u003ch3\u003eThe Ford Heavy-Duty Standard\u003c\/h3\u003e\n\u003cp\u003eBuilt to handle severe commercial duty cycles, this ignition package restores dependable low-end pulling torque and cold-start reliability required when hauling maximum rated payloads in your Super Duty.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67562434134264,"sku":"DS-EGD4ZFYXJ","price":115.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-spark-plugs-for-ford-f-350-1999-2004-6-8l-1.jpg?v=1790980986","url":"https:\/\/performancechiptuning.com\/es\/products\/ignition-coil-spark-plugs-for-ford-f-350-1999-2004-6-8l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}