{"product_id":"ignition-coil-and-iridium-spark-plugs-for-mercury-mountaineer-2000-2005-4-0l","title":"Ignition Coil and Iridium Spark Plugs for Mercury Mountaineer (2000-2005) 4.0L","description":"\u003ch2\u003eDirect-Fit Ignition Coil \u0026amp; Iridium Spark Plug Kit for 2000-2005 Mercury Mountaineer\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Replaces worn factory ignition components with high-dielectric coil assemblies and fine-wire iridium spark plugs to restore factory secondary voltage and eliminate cylinder misfires under load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Mountaineer Ignition Breakdown\u003c\/h3\u003e\n\u003cp\u003eRepeated thermal cycling in the Cologne 4.0L SOHC engine bay degrades the OEM ignition coil potting and internal winding insulation over time. This thermal stress induces internal micro-arcing, dielectric failure, and secondary voltage leakage, resulting in carbon tracking, erratic idle, loss of fuel economy, and P0300-P0306 diagnostic trouble codes during heavy acceleration or towing.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis complete 6-cylinder ignition kit features heavy-gauge oxygen-free copper primary and secondary windings encased in high-grade dielectric epoxy potting to resist thermal degradation and moisture ingress. Matched fine-wire iridium spark plugs require less firing voltage to initiate a stable spark kernel, effectively reducing thermal stress on the coil drivers while maintaining clean, complete combustion across all engine loads. OEM-spec blade terminals and molded connectors ensure direct-fit harness integration.\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;\"\u003e2000-2005 Mercury Mountaineer\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;\"\u003e4.0L Cologne SOHC V6 \/ U152, UN105\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;\"\u003e210 hp \/ 254 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;\"\u003eUF406, FD502, DG500, UF-406\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2000 Mercury Mountaineer 4.0L V6\u003c\/li\u003e\n  \u003cli\u003e2001 Mercury Mountaineer 4.0L V6\u003c\/li\u003e\n  \u003cli\u003e2002 Mercury Mountaineer 4.0L V6 (Base, Convenience, Luxury, Premier)\u003c\/li\u003e\n  \u003cli\u003e2003 Mercury Mountaineer 4.0L V6 (Base, Convenience, Luxury, Premier)\u003c\/li\u003e\n  \u003cli\u003e2004 Mercury Mountaineer 4.0L V6 (Base, Convenience, Luxury, Premier)\u003c\/li\u003e\n  \u003cli\u003e2005 Mercury Mountaineer 4.0L V6 (Base, Convenience, Luxury, Premier)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Mercury Durability Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to withstand prolonged thermal loads, high-mileage utility duty, and towing requirements without dielectric insulation breakdown or unmetered spark drop.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50452204454136,"sku":"DS-E5EXEKME7","price":71.95,"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-2000-2005-4-0l-1.jpg?v=1788720726","url":"https:\/\/performancechiptuning.com\/es\/products\/ignition-coil-and-iridium-spark-plugs-for-mercury-mountaineer-2000-2005-4-0l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}