{"product_id":"ignition-coil-and-iridium-spark-plugs-for-ford-aerostar-1990-1997-4-0l","title":"Ignition Coil and Iridium Spark Plugs for Ford Aerostar (1990-1997) 4.0L","description":"\u003ch2\u003eOEM-Spec Replacement Ignition Coil and Iridium Spark Plug Kit for 1990-1997 Ford Aerostar\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eDirect-fit complete secondary ignition overhaul engineered to eliminate misfires, restore lost combustion efficiency, and ensure stable cold starting on 4.0L V6 Ford Aerostar platforms.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Aerostar Thermal and Dielectric Breakdown\u003c\/h3\u003e\n\u003cp\u003eThe tightly packaged engine doghouse in the VN1 chassis Aerostar subjects the ignition system to continuous, intense thermal soak. Over extended heat cycles, factory coils experience dielectric breakdown as internal potting compounds micro-crack, creating high-voltage leakage paths to ground. This internal arcing drops secondary kilovolt output, causing weak spark delivery, hesitation under payload acceleration, poor fuel economy, and spark scatter under load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis replacement kit upgrades the ignition circuit using premium oxygen-free copper primary and secondary windings encased in a dense, high-dielectric thermoplastic casing designed to resist thermal degradation. Paired with fine-wire iridium spark plugs, the kit maximizes spark kernel growth while requiring lower ignition voltage to initiate combustion. Iridium center electrodes resist spark erosion, gap widening, and fouling under sustained engine load far better than standard nickel or copper cores.\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;\"\u003e1990-1997 Ford Aerostar\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 OHV V6 \/ VN1\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;\"\u003e155 hp \/ 225 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\u003e1990 Ford Aerostar 4.0L V6 (Base, XL, XLT, Eddie Bauer)\u003c\/li\u003e\n  \u003cli\u003e1991 Ford Aerostar 4.0L V6 (Base, XL, XLT, Eddie Bauer)\u003c\/li\u003e\n  \u003cli\u003e1992 Ford Aerostar 4.0L V6 (Base, XL, XLT, Eddie Bauer)\u003c\/li\u003e\n  \u003cli\u003e1993 Ford Aerostar 4.0L V6 (Base, XL, XLT, Eddie Bauer)\u003c\/li\u003e\n  \u003cli\u003e1994 Ford Aerostar 4.0L V6 (Base, XL, XLT, Eddie Bauer)\u003c\/li\u003e\n  \u003cli\u003e1995 Ford Aerostar 4.0L V6 (Base, XL, XLT)\u003c\/li\u003e\n  \u003cli\u003e1996 Ford Aerostar 4.0L V6 (Base, XLT)\u003c\/li\u003e\n  \u003cli\u003e1997 Ford Aerostar 4.0L V6 (Base, XLT)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Ford Workhorse Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered for high-mileage durability, this kit maintains clean spark delivery under towing and passenger hauling conditions, ensuring optimal low-end torque retention and smooth idle operation across all service environments.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50452203372792,"sku":"DS-ER8X225A3","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-ford-aerostar-1990-1997-4-0l-1.jpg?v=1788720695","url":"https:\/\/performancechiptuning.com\/products\/ignition-coil-and-iridium-spark-plugs-for-ford-aerostar-1990-1997-4-0l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}