{"product_id":"ignition-coil-and-iridium-spark-plugs-for-mercury-mountaineer-2002-2010-4-6l","title":"Ignition Coil and Iridium Spark Plugs for Mercury Mountaineer (2002-2010) 4.6L","description":"\u003ch2\u003eDirect-Fit Ignition Coil and Iridium Spark Plug Kit for 2002-2010 Mercury Mountaineer\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Restores factory ignition dwell, eliminates secondary voltage breakdown, and ensures dependable combustion across all eight cylinders on the 4.6L Modular V8.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Mountaineer Ignition Degradation\u003c\/h3\u003e\n\u003cp\u003eFactory coil-on-plug (COP) assemblies on the Ford Modular 4.6L V8 frequently suffer from thermal fatigue after repeated heat cycling. Over time, the internal epoxy encapsulation cracks and the silicone spark plug boots harden, resulting in dielectric breakdown and high-voltage flashover to the cylinder head walls. This manifests as intermittent under-load misfires (DTCs P0300–P0308), rough idling, diminished fuel economy, and power hesitation during acceleration.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis complete 8-cylinder ignition kit replaces degraded OEM units with heavy-duty coil packs featuring high-conductivity copper primary and secondary windings for stable voltage output and thermal endurance. Paired with fine-wire iridium spark plugs, the system lowers required firing voltage, provides superior resistance to electrode erosion, and promotes reliable flame kernel development under heavy load and towing 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;\"\u003e2002-2010 Mercury Mountaineer 4.6L 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;\"\u003eFord Modular 4.6L V8 \/ U152, U251 Platform\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;\"\u003e239–292 hp \/ 282–300 lb-ft (Approx)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003ePart Number \/ Interchange\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\u003e2002-2010 Mercury Mountaineer (4.6L V8 - Base, Premier, Convenience, Luxury Trims)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Mercury Towing \u0026amp; Utility Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to handle sustained thermal stress, this complete ignition refresh maintains steady dwell times and crisp throttle response, ensuring reliable torque delivery when towing, climbing grades, or daily driving.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50448495313144,"sku":"DS-EAMBDDSWE","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-mercury-mountaineer-2002-2010-4-6l-1.jpg?v=1788647327","url":"https:\/\/performancechiptuning.com\/es\/products\/ignition-coil-and-iridium-spark-plugs-for-mercury-mountaineer-2002-2010-4-6l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}