{"product_id":"ignition-coil-and-iridium-spark-plugs-for-ford-f-150-2005-2010-5-4l","title":"Ignition Coil and Iridium Spark Plugs for Ford F-150 (2005-2010) 5.4L","description":"\u003ch2\u003eDirect-Fit Ignition Coil and Iridium Spark Plug Kit for 2005-2010 Ford F-150\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Delivers a complete high-voltage ignition refresh to restore factory combustion efficiency, eliminate low-load misfires, and stabilize idle across all 8 cylinders.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock F-150 Ignition Weakness\u003c\/h3\u003e\n\u003cp\u003eThe 5.4L 3-Valve Triton engine is prone to secondary ignition breakdown caused by thermal fatigue and dielectric breakdown inside aged coil-on-plug (COP) boots. Over time, high underhood heat cycles degrade the factory copper windings, while thermal expansion causes micro-arcing between the boot and cylinder head recess. Combined with worn factory spark plug electrodes that demand increased ionization voltage, this degradation leads to unburnt fuel cycles, hesitation under heavy towing load, and catalytic converter-damaging misfires.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis ignition kit pairs 8 direct-replacement coil assemblies with fine-wire iridium spark plugs to maximize spark energy and arc stability. Each coil is engineered with high-conductivity internal copper windings insulated by vacuum-potted epoxy, preventing internal flashover under extreme cylinder pressures. Matched with iridium plugs that require lower firing voltage and resist electrode erosion up to four times longer than standard copper, this setup ensures crisp throttle response, zero spark blowout, and complete air-fuel burn.\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;\"\u003e2005-2010 Ford F-150 5.4L V8\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 Modular \/ P221 \u0026amp; P415\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;\"\u003e300-310 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;\"\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\u003e2005-2008 Ford F-150 (P221) 5.4L V8 Triton (FX4, King Ranch, Lariat, STX, XL, XLT)\u003c\/li\u003e\n  \u003cli\u003e2009-2010 Ford F-150 (P415) 5.4L V8 Triton (FX4, Harley-Davidson, King Ranch, Lariat, Platinum, STX, XL, XLT)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Ford Truck Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to withstand sustained thermal stress and high-load towing demands, this ignition package ensures dependable cold starts, rock-solid idle stability, and consistent torque delivery whether hauling heavy payloads or navigating rough job sites.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50448495083768,"sku":"DS-EBB5P3DXA","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-150-2005-2010-5-4l-1.jpg?v=1788647297","url":"https:\/\/performancechiptuning.com\/fr\/products\/ignition-coil-and-iridium-spark-plugs-for-ford-f-150-2005-2010-5-4l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}