{"product_id":"ignition-coil-and-iridium-spark-plugs-for-ford-flex-2009-2012-3-5l","title":"Ignition Coil and Iridium Spark Plugs for Ford Flex (2009-2012) 3.5L","description":"\u003ch2\u003eDirect-Fit Ignition Coil and Iridium Spark Plug Kit for 2009-2012 Ford Flex\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003ePrimary Function:\u003c\/strong\u003e Restores factory secondary ignition output and combustion efficiency across all six cylinders by replacing thermally degraded coils and worn spark plugs.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Flex Secondary Ignition Vulnerabilities\u003c\/h3\u003e\n\u003cp\u003eOver extended operating hours, the transverse engine layout in the Ford D4 chassis subjects the rear cylinder bank to high thermal soak. Factory ignition coils undergo dielectric breakdown within the silicone boots and epoxy potting, creating paths for secondary voltage leakage, carbon tracking, and intermittent misfire codes under load (P0300–P0306). Compounding this, standard factory spark plugs experience electrode gap erosion, increasing required breakdown voltage and over-stressing aged coil windings.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive tune-up kit utilizes direct-fit coil-on-plug assemblies engineered with high-purity oxygen-free copper internal windings and high-temperature dielectric epoxy encapsulation to prevent voltage arcing. Precision blade terminals ensure minimal contact resistance with the OEM harness connectors. Paired with fine-wire iridium spark plugs, this setup reduces ignition voltage demand, resists high-temperature corrosion, and stabilizes flame kernel propagation for consistent combustion across all RPM bands.\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;\"\u003e2009-2012 Ford Flex\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;\"\u003e3.5L Duratec 35 V6 \/ Ford D4 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;\"\u003e262 hp \/ 248 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;\"\u003eUF553, UF-553, DG520\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2009-2012 Ford Flex SE 3.5L V6 Naturally Aspirated\u003c\/li\u003e\n  \u003cli\u003e2009-2012 Ford Flex SEL 3.5L V6 Naturally Aspirated\u003c\/li\u003e\n  \u003cli\u003e2009-2012 Ford Flex Limited 3.5L V6 Naturally Aspirated\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Ford Durability Caliber\u003c\/h3\u003e\n\u003cp\u003eEngineered to handle the constant thermal and mechanical loads of family transport and cross-country towing, this direct-fit ignition system eliminates rough idling, resolves cold-start hesitation, and restores powertrain efficiency without triggering check engine lights.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50451964985592,"sku":"DS-EV1E8TN9U","price":104.95,"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-flex-2009-2012-3-5l-1.jpg?v=1788714890","url":"https:\/\/performancechiptuning.com\/products\/ignition-coil-and-iridium-spark-plugs-for-ford-flex-2009-2012-3-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}