{"title":"Ignition Coils for Ford Explorer","description":"\u003ch2\u003eReplacement Ignition Coils Compatible with Ford Explorer\u003c\/h2\u003e\u003cp\u003eHeat cycles crack coil boots and weaken spark, which shows up as a rough idle, a flat spot on acceleration, or a misfire on the highway. These coil packs and coil-and-plug kits fit select Ford Explorer applications, including a 2006-2010 Explorer and Sport Trac 4.0L listing. Browse \u003ca href=\"\/collections\/ford-ignition\"\u003eignition parts for Ford\u003c\/a\u003e, add a \u003ca href=\"\/collections\/ford-performance-tune\"\u003eperformance tune for Ford\u003c\/a\u003e, or look at \u003ca href=\"\/collections\/ford-air-intakes\"\u003eair intakes compatible with Ford\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eSelect Explorer Engines, Including Sport Trac\u003c\/h3\u003e\u003cp\u003eCoverage follows the product titles. Check the connector pin count on the listing before you order:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.0L:\u003c\/strong\u003e 2012-2015\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.3L:\u003c\/strong\u003e 2016-2019\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.0L:\u003c\/strong\u003e 2020-2023\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.3L:\u003c\/strong\u003e 2020-2021\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.5L:\u003c\/strong\u003e 2011-2019\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4.0L:\u003c\/strong\u003e select 1991-2010, including Explorer \/ Sport Trac 2006-2010\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4.6L V8:\u003c\/strong\u003e 2002-2010\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003ch3\u003eWhat Explorer years and engines are in this collection?\u003c\/h3\u003e\u003cp\u003eSelect applications from 1991-2023: 2.0L (2012-2015), 2.3L (2016-2019), 3.0L (2020-2023), 3.3L (2020-2021), 3.5L (2011-2019), 4.0L (1991-2010, including Sport Trac), and 4.6L V8 (2002-2010). One 2017-2019 3.5L listing is a 2-pin coil. Confirm pins, year, and engine on the title.\u003c\/p\u003e\u003ch3\u003eWill a coil pack clear P0300 or a single-cylinder misfire?\u003c\/h3\u003e\u003cp\u003eYes, when the code comes from a cracked housing, carbon tracking on the boot, or a winding that no longer fires. P0300 is a random misfire. P0301 through P0306 (or P0308 on a V8) name one cylinder. New coils and plugs address that spark fault.\u003c\/p\u003e\u003ch3\u003eShould I change one Explorer coil or the whole set?\u003c\/h3\u003e\u003cp\u003eChange the set. The coils share the same heat and miles, so the next one often fails soon after the first. Several listings are multi-cylinder coil and spark plug kits. Use the kit that matches the engine instead of mixing old plugs with one new coil.\u003c\/p\u003e","products":[{"product_id":"6-high-performance-ignition-coil-for-ford-explorer-2013-2019-3-5l-engine","title":"6 High Performance Ignition Coil for Ford Explorer (2013-2019) 3.5L Engine","description":"\u003ch2\u003ePrecision-Engineered Ignition Coils for 2013-2019 Ford Explorer (Duratec 35 \/ U502)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eDirect-fit high-output ignition coils designed to eliminate secondary voltage leaks and restore combustion efficiency in the Ford 3.5L Ti-VCT engine.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Explorer Ignition Weakness\u003c\/h3\u003e\n\u003cp\u003eThe U502 chassis environment subjects the ignition system to significant thermal stress, particularly during extended idling or towing. The factory UF646 coils often suffer from dielectric breakdown within the internal epoxy resin due to cumulative heat cycles. This degradation leads to carbon tracking and micro-fissures in the coil housing, which manifests as intermittent misfires under load, decreased fuel economy, and hesitant throttle response. Furthermore, the OEM primary and secondary windings can develop internal resistance over time, resulting in a weakened spark energy that fails to provide a clean burn, especially as the gap on the spark plugs naturally widens.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThese performance-grade replacements are engineered using high-conductive German copper wire and premium silicone magnetic steel to optimize the turns ratio. This design facilitates a more efficient step-up transformation, delivering a higher voltage ceiling and longer spark duration than standard replacements. To combat the common failure points of the Cyclone engine family, the internal components are vacuum-potted with a high-temp thermal epoxy that eliminates air pockets, providing superior insulation against moisture and high-frequency engine vibration. The reinforced thermoplastic housing offers increased chemical resistance, ensuring the coils maintain structural integrity and voltage isolation throughout the 3.5L engine's entire RPM range.\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;\"\u003e2013-2019 Ford Explorer\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;\"\u003eDuratec 35 (Cyclone) \/ U502\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;\"\u003e290 hp \/ 255 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;\"\u003eUF646\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2013 Ford Explorer 3.5L V6\u003c\/li\u003e\n  \u003cli\u003e2014 Ford Explorer 3.5L V6\u003c\/li\u003e\n  \u003cli\u003e2015 Ford Explorer 3.5L V6\u003c\/li\u003e\n  \u003cli\u003e2016 Ford Explorer 3.5L V6\u003c\/li\u003e\n  \u003cli\u003e2017 Ford Explorer 3.5L V6\u003c\/li\u003e\n  \u003cli\u003e2018 Ford Explorer 3.5L V6\u003c\/li\u003e\n  \u003cli\u003e2019 Ford Explorer 3.5L V6\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Ford Performance Quality\u003c\/h3\u003e\n\u003cp\u003eReliable ignition performance is critical for maintaining the towing capacity and highway stability of the U502 Explorer. These coils ensure consistent cold starts and a linear power band, providing the durability required for heavy-duty utility and long-distance transit. By stabilizing the secondary voltage output, these units protect your catalytic converters from unburnt fuel and prevent the common P0300-P0306 misfire codes that plague aging Cyclone engines.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":47990004482296,"sku":"DS-EY8NR8C8B","price":179.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/6-high-performance-ignition-coil-for-ford-explorer-2013-2019-3-5l-engine-1.webp?v=1771102921"},{"product_id":"ignition-coils-spark-plugs-for-ford-explorer-2002-2005-4-6l","title":"Ignition Coils \u0026 Spark Plugs for Ford Explorer (2002-2005) 4.6L","description":"\u003ch2\u003eHigh-Output Ignition Coils \u0026amp; Spark Plugs for 2002-2005 Ford Explorer (Modular 4.6L \/ U152)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it does:\u003c\/strong\u003e Replaces degrading factory ignition components with high-output ignition coils and precision spark plugs to restore consistent spark delivery, reduce misfires, and stabilize idle in the 4.6L Modular V8.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Explorer Ignition Weakness\u003c\/h3\u003e\n\u003cp\u003eThe factory ignition coils on the 2002-2005 U152 Explorer, specifically the early-generation COP (Coil-On-Plug) units, are notoriously susceptible to thermal degradation and moisture intrusion. Positioned directly over the spark plugs in the Modular 4.6L V8's deep cylinder head wells, these OEM coils suffer from severe heat soak over thousands of heat cycles. This prolonged exposure degrades the internal epoxy potting and internal primary windings, eventually leading to secondary voltage leaks. Furthermore, failing coil boots allow moisture to collect, resulting in carbon tracking, high-rpm misfires, hesitation under towing loads, and a severe drop in overall combustion efficiency.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive ignition coil and spark plug kit addresses OEM thermal shortcomings through upgraded internal materials and superior external insulation. The coils feature high-temperature conductive silicone boots and enhanced dielectric epoxy potting that resists breakdown under extreme under-hood temperatures. Upgraded primary and secondary copper windings reduce internal resistance, ensuring a hotter, more stable spark output that resists blowout under load. Paired with performance-grade spark plugs designed for optimal heat dissipation and complete fuel burn, this ignition overhaul restores factory torque delivery, optimizes fuel atomization, and completely eliminates the stuttering associated with degraded COP ignition systems.\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;\"\u003e2002-2005 Ford Explorer\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;\"\u003eModular 4.6L V8 \/ U152\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 hp \/ 282 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;\"\u003eReplaces DG508, 1L2Z12029AA, C1417, FD503\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2002 Ford Explorer 4.6L V8\u003c\/li\u003e\n  \u003cli\u003e2003 Ford Explorer 4.6L V8\u003c\/li\u003e\n  \u003cli\u003e2004 Ford Explorer 4.6L V8\u003c\/li\u003e\n  \u003cli\u003e2005 Ford Explorer 4.6L V8\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Ford Durability Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to handle the heavy towing and hauling demands of the third-generation SUV chassis, this ignition upgrade guarantees long-lasting reliability and sustained power when pulling trailers or navigating rugged terrain.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":48244715028728,"sku":"DS-EG7W9AQTC","price":129.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coils-spark-plugs-for-ford-explorer-2002-2005-4-6l-1.jpg?v=1776272482"},{"product_id":"ignition-coil-spark-plugs-for-ford-explorer-2017-2019-3-5l-v6","title":"Ignition Coil 2-Pin \u0026 Spark Plugs for Ford Explorer (2017-2019) 3.5L V6","description":"\u003ch2\u003eDirect-Replacement Ignition Coil \u0026amp; Spark Plugs for 2017-2019 Ford Explorer\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eRestores proper engine ignition timing and combustion efficiency for the 3.5L V6 by replacing failing OEM coils and worn plugs.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003eThe Stock Explorer Ignition Weakness\u003c\/h3\u003e\n\u003cp\u003eThe factory ignition coils on the U502-chassis Ford Explorer equipped with the 3.5L Cyclone V6 are notorious for thermal degradation over high-mileage cycles. Because these coils sit in a high-temperature environment directly above the cylinder heads, the internal epoxy potting breaks down, leading to micro-cracking. This degradation allows moisture ingress and voltage leaks, resulting in primary or secondary winding failures. Symptoms typically present as severe engine misfires under load, rough idling, blinking check engine lights (P0300-P0306 codes), and degraded fuel economy due to incomplete combustion events.\u003c\/p\u003e\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive service kit directly resolves these ignition issues by utilizing highly conductive copper internal windings to ensure consistent secondary voltage output. The ignition coils feature a high-dielectric epoxy injection that eliminates internal air pockets, preventing the voltage arc-overs common in degraded OEM units. The external housings are molded from temperature-resistant thermoplastic, offering superior defense against engine bay heat soak and chemical exposure. Paired with platinum premium grade spark plugs, this system guarantees a focused, high-energy spark. The platinum center electrodes resist spark erosion and maintain a precise gap tolerance over extended intervals, ensuring optimal flame front propagation and restoring factory combustion stability without requiring modifications to the factory wiring harness.\u003c\/p\u003e\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;\"\u003e2017-2019 Ford Explorer\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 Cyclone V6 \/ U502\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;\"\u003e290 hp \/ 255 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;\"\u003eIC78051174067810052006 (OEM Ref: 7T4Z12029F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2017 Ford Explorer 3.5L V6\u003c\/li\u003e\n\u003cli\u003e2018 Ford Explorer 3.5L V6\u003c\/li\u003e\n\u003cli\u003e2019 Ford Explorer 3.5L V6\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Ford Reliability Standard\u003c\/h3\u003e\n\u003cp\u003eFor an SUV built to handle daily family hauling and moderate towing, maintaining factory ignition efficiency is non-negotiable. This complete coil and plug kit restores the dependable power delivery and smooth idling expected from the 3.5L Cyclone platform.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":49696721993976,"sku":"DS-ERKT6QZ4X","price":164.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-spark-plugs-for-ford-explorer-2017-2019-3-5l-v6-1.jpg?v=1782749253"},{"product_id":"ignition-coil-spark-plugs-for-ford-explorer-sport-trac-2006-2010-4-0l-v6","title":"Ignition Coil \u0026 Spark Plugs for Ford Explorer \/ Sport Trac (2006-2010) 4.0L V6","description":"\u003ch2\u003eHigh-Voltage Ignition Coil \u0026amp; Spark Plugs for 2006-2010 Ford Explorer\u003c\/h2\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eThis direct-replacement ignition coil pack and Motorcraft spark plug kit restores factory spark energy to eliminate misfires and rough idling in the 4.0L V6.\u003c\/strong\u003e\u003c\/p\u003e\n  \n  \u003ch3\u003eThe Stock Explorer Ignition Weakness\u003c\/h3\u003e\n  \u003cp\u003eOver thousands of heat cycles, the factory epoxy resin within the OEM ignition coil pack degrades, leading to micro-cracking within the housing. Once compromised, moisture intrudes into the primary and secondary windings, causing internal arcing and voltage leaks. This degradation manifests as intermittent cylinder misfires, hesitation under load, poor fuel economy, and eventually triggering persistent P0300 through P0306 diagnostic trouble codes. Furthermore, the factory spark plug electrodes wear down over time, increasing the resistance gap and putting further thermal stress on an already failing coil unit.\u003c\/p\u003e\n  \n  \u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n  \u003cp\u003eThis kit resolves these ignition breakdown issues by pairing a high-dielectric epoxy ignition coil pack with genuine OEM Motorcraft spark plugs. The coil block features upgraded internal copper windings engineered to resist thermal breakdown and maintain consistent primary resistance values. The advanced polymer housing is vibration and thermal-shock resistant, completely sealing out moisture and preventing voltage bleed in harsh under-hood environments. Combined with the precise heat range and optimized electrode design of the included Motorcraft plugs, this system ensures a complete fuel burn, restoring lost low-end torque, smoothing out idle fluctuations, and providing reliable cold-start performance even under high-load towing conditions.\u003c\/p\u003e\n  \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;\"\u003e2006-2010 Ford Explorer\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 V6 SOHC \/ U251 (Explorer) \u0026amp; U204 (Sport Trac)\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;\"\u003e90TF12029A1A, E9DF12029AA, E9DZ12029A, F0TZ12029A, F1DZ12029A, F57U12029AA, F57Z12029A, F57Z12029B, F82U12029AA, FOTZ12029A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n \n  \n  \u003ch3\u003eCompatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e2006-2010 Ford Explorer V6 4.0L\u003c\/li\u003e\n    \u003cli\u003e2007-2010 Ford Explorer Sport Trac V6 4.0L\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eThe Ford Towing Caliber\u003c\/h3\u003e\n  \u003cp\u003eEngineered for maximum durability, this comprehensive ignition overhaul ensures your SUV maintains the consistent power delivery, throttle response, and mechanical reliability required for heavy hauling, towing, and daily utility.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50139869446392,"sku":"DS-E261684TM","price":139.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-spark-plugs-for-ford-explorer-sport-trac-2006-2010-4-0l-v6-1.jpg?v=1786462053"},{"product_id":"ignition-coil-and-iridium-spark-plugs-for-ford-explorer-2011-2016-3-5l","title":"Ignition Coil and Iridium Spark Plugs for Ford Explorer (2011-2016) 3.5L","description":"\u003ch2\u003eDirect-Fit OEM Replacement Ignition Coil and Iridium Spark Plug Kit for 2011-2016 Ford Explorer\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Direct-fit secondary ignition overhaul kit engineered to restore precise spark timing, eliminate cylinder misfires, and maintain complete combustion efficiency across all six cylinders.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Explorer Ignition Coil Breakdown\u003c\/h3\u003e\n\u003cp\u003eThe factory ignition coils on the transverse-mounted Duratec 35 V6 endure heavy heat cycling, particularly along Bank 1 tucked underneath the intake manifold. Over time, OEM potting compound degrades, resulting in internal dielectric breakdown, thermal micro-cracking, and carbon tracking. Combined with worn factory plug gaps that increase required arc voltage, the OEM coils suffer insulation puncture, causing rough idle, hesitations under load, reduced fuel economy, and P0300-P0306 diagnostic trouble codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive service kit pairs six high-dielectric coil-on-plug assemblies with six pre-gapped fine-wire iridium spark plugs. The coils utilize premium electrolytic copper windings and impact-resistant thermoplastic housings to resist thermal fatigue and prevent voltage leakage. The fine-wire iridium center electrodes demand significantly lower ignition voltage to initiate spark, ensuring rapid flame kernel expansion, crisp throttle response, and dependable cold starts under high cylinder pressures.\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;\"\u003e2011-2016 Ford Explorer\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 (Cyclone) V6 \/ U502\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;\"\u003e290 hp \/ 255 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, DG520, CY0118100B, CY01-18-100A, 7T4Z12029E\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2011-2016 Ford Explorer Base 3.5L V6 Naturally Aspirated\u003c\/li\u003e\n  \u003cli\u003e2011-2016 Ford Explorer XLT 3.5L V6 Naturally Aspirated\u003c\/li\u003e\n  \u003cli\u003e2011-2016 Ford Explorer Limited 3.5L V6 Naturally Aspirated\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Ford Durability Standard\u003c\/h3\u003e\n\u003cp\u003eBuilt to handle continuous family hauling, long-distance road trips, and light towing duty, this ignition package delivers consistent high-output secondary voltage to keep your U502 Explorer running at factory efficiency and peak power delivery.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50447728115960,"sku":"DS-E23OVGWWP","price":109.95,"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-explorer-2011-2016-3-5l-1.jpg?v=1788622235"},{"product_id":"ignition-coil-and-iridium-spark-plugs-for-ford-explorer-2012-2015-2-0l","title":"Ignition Coil and Iridium Spark Plugs for Ford Explorer (2012-2015) 2.0L","description":"\u003ch2\u003eDirect-Fit Ignition Coil and Iridium Spark Plug Kit for 2012-2015 Ford Explorer\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Restores factory ignition timing, combustion efficiency, and cold-start reliability by replacing aged ignition coils and worn spark plugs in 2.0L EcoBoost engines.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Explorer Ignition Breakdown\u003c\/h3\u003e\n\u003cp\u003eUnder sustained boost and thermal cycling, factory coil packs in the 2.0L EcoBoost suffer from internal dielectric breakdown and secondary winding resistance drift. Combined with rapid electrode erosion on factory plugs due to high cylinder pressures, this leads to spark blowout under load, erratic idle, reduced fuel economy, and P0300-series misfire trouble codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis kit matches OEM electrical characteristics while reinforcing internal components against thermal fatigue. The coil-on-plug assemblies feature high-conductivity copper primary and secondary windings encased in impact-resistant, high-dielectric epoxy housing. Paired with fine-wire iridium spark plugs that require lower voltage to arc and resist gap degradation under boost, this package ensures stable flame kernel propagation and zero spark scatter across the entire RPM range.\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;\"\u003e2012-2015 Ford Explorer (2.0L I4 Turbo)\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;\"\u003e2.0L EcoBoost I4 \/ U502\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;\"\u003e240 hp \/ 270 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;\"\u003eUF670, DG546, 5C1873, CM5Z-12029-A, CM5E-12A366-BC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2012 Ford Explorer Base \/ XLT \/ Limited (2.0L L4 EcoBoost)\u003c\/li\u003e\n  \u003cli\u003e2013 Ford Explorer Base \/ XLT \/ Limited (2.0L L4 EcoBoost)\u003c\/li\u003e\n  \u003cli\u003e2014 Ford Explorer Base \/ XLT \/ Limited (2.0L L4 EcoBoost)\u003c\/li\u003e\n  \u003cli\u003e2015 Ford Explorer Base \/ XLT \/ Limited (2.0L L4 EcoBoost)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Ford Utility Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered for the demands of daily passenger hauling and sustained highway load, this ignition refresh guarantees reliable cold starts, smooth idle stability, and consistent torque delivery without triggering check engine lights.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50448901374200,"sku":"DS-E9586BMYZ","price":82.95,"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-explorer-2012-2015-2-0l-1.jpg?v=1788662934"},{"product_id":"ignition-coil-and-iridium-spark-plugs-for-ford-explorer-2016-2019-2-3l","title":"Ignition Coil and Iridium Spark Plugs for Ford Explorer (2016-2019) 2.3L","description":"\u003ch2\u003eDirect-Replacement Ignition Coil and Iridium Spark Plug Service Kit for 2016-2019 Ford Explorer\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Replaces degraded factory coil-on-plug units and worn spark plugs to eliminate misfires, stabilize idle, and restore peak combustion efficiency in turbocharged four-cylinder applications.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Explorer Ignition Breakdown\u003c\/h3\u003e\n\u003cp\u003eUnder sustained boost and severe thermal cycling inside the transverse engine bay, factory ignition coils suffer internal dielectric insulation breakdown and secondary copper winding fatigue. Combined with high cylinder pressures on the direct-injected EcoBoost platform, worn electrodes cause spark blow-out, carbon tracking across the plug insulator, and hesitation under load, frequently triggering cylinder misfire diagnostic trouble codes (DTC P0300-P0304).\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis matched service kit features four heavy-duty coil-on-plug assemblies built with high-grade internal copper windings and thermal-shock resistant epoxy potting to prevent voltage leakages. Paired with laser-welded fine-wire iridium spark plugs, the assembly delivers a focused spark kernel capable of piercing dense air-fuel mixtures under boost, resisting gap erosion, and lowering secondary voltage demand for dependable throttle response.\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;\"\u003e2016-2019 Ford Explorer\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;\"\u003e2.3L EcoBoost Turbo I4 \/ U502\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;\"\u003e280 hp \/ 310 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;\"\u003eUF670, DG546, 5C1873, CM5Z-12029-A, CM5E-12A366-BC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2016-2019 Ford Explorer:\u003c\/strong\u003e Base, XLT, Limited (2.3L EcoBoost Turbocharged I4)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInterchange \/ OE Part Numbers:\u003c\/strong\u003e UF670, DG546, 5C1873, CM5Z-12029-A, CM5E-12A366-BC, CM5E12A366CA, JDE30294, 6736203\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Ford Durability Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to handle the continuous thermal demands of family hauling, daily commuting, and utility towing, this ignition package delivers precise discharge timing and consistent arc stability without triggering CEL faults.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50449166827768,"sku":"DS-ELC5WLWL6","price":82.95,"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-explorer-2016-2019-2-3l-1.jpg?v=1788668518"},{"product_id":"ignition-coil-and-iridium-spark-plugs-for-ford-explorer-1991-2005-4-0l","title":"Ignition Coil and Iridium Spark Plugs for Ford Explorer (1991-2005) 4.0L","description":"\u003ch2\u003eDirect-Replacement Ignition Coil and Iridium Spark Plug Kit for 1991-2005 Ford Explorer\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Restores factory secondary ignition voltage and resolves secondary misfires by replacing thermal-fatigued coils and worn electrodes with high-dielectric coil assemblies and fine-wire iridium spark plugs.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Explorer Secondary Ignition Breakdown\u003c\/h3\u003e\n\u003cp\u003eThe Ford 4.0L Cologne engine bay subjects ignition components to continuous thermal cycling and engine vibration. Over time, factory coil housings suffer micro-fractures in their epoxy encapsulation, allowing moisture intrusion and internal carbon tracking. Simultaneously, standard copper or nickel-core spark plugs experience gap erosion under load, drastically increasing required breakdown voltage. This elevated resistance strains aging primary windings, causing intermittent misfires, rough idle, reduced towing torque, and unburned hydrocarbon catalytic fouling.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis direct-fit overhaul kit features six high-output ignition coils engineered with high-conductivity copper windings, reinforced thermoplastic PBT housings, and premium silicone boots to prevent voltage leakage. Paired with fine-wire iridium-tipped spark plugs, the system reduces the voltage required to bridge the gap while offering extreme resistance to electrical erosion and heat degradation under sustained load.\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;\"\u003e1991-2005 Ford Explorer\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 V6 (OHV \/ SOHC) \/ UN46, UN105, U152\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;\"\u003e160–210 hp \/ 225–254 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\u003e1991-2005 Ford Explorer 4.0L V6 (All Trims: Eddie Bauer, Limited, Sport, Sport Trac, XL, XLT, XLS)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Ford Fleet-Grade Durability\u003c\/h3\u003e\n\u003cp\u003eEngineered to handle sustained utility duty, high-temperature trail crawling, and heavy payload demands, this ignition package delivers consistent high-kV output across the entire RPM band without spark blowout.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50452199047416,"sku":"DS-E76KV933M","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-explorer-1991-2005-4-0l-1.jpg?v=1788720603"},{"product_id":"ignition-coil-and-iridium-spark-plugs-for-ford-explorer-2006-2008-4-6l","title":"Ignition Coil and Iridium Spark Plugs for Ford Explorer (2006-2008) 4.6L","description":"\u003ch2\u003eDirect-Fit Ignition Coil and Iridium Spark Plug Service Kit for 2006-2008 Ford Explorer\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eReplaces degraded factory ignition components to eliminate cylinder misfires, rough idle, and unburned fuel under load.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Explorer Thermal Breakdown and Spark Energy Drop\u003c\/h3\u003e\n\u003cp\u003eThe 4.6L 3-valve Modular V8 engine bay generates substantial radiant heat, accelerating the breakdown of factory coil-on-plug (COP) epoxy insulation and rubber boots. Over time, heat soak causes micro-cracking in the primary and secondary copper windings, allowing dielectric breakdown, secondary voltage leakage, and carbon tracking. Combined with worn spark plug electrode gaps, this deterioration results in incomplete combustion, hesitation under throttle, and P0300-series trouble codes during heavy payload or towing demands.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis direct-replacement ignition pack upgrades your primary ignition system with durable internal copper windings engineered to resist thermal degradation and maintain consistent millijoule spark output. Paired with high-grade silicone dielectric boots and iridium-tipped center electrode spark plugs, this kit provides exceptional thermal stability, reduced ignition voltage requirements, and optimal flame kernel propagation. OE-matched blade connectors guarantee a plug-and-play install without harness modification.\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;\"\u003e2006-2008 Ford Explorer\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;\"\u003e4.6L Modular 3V V8 \/ U251\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;\"\u003e292 hp \/ 300 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;\"\u003eDG511, DG-511, FD508, SP546, UF537\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2006 Ford Explorer 4.6L V8 (Eddie Bauer, Limited, XLT)\u003c\/li\u003e\n  \u003cli\u003e2007 Ford Explorer 4.6L V8 (Eddie Bauer, Limited, XLT)\u003c\/li\u003e\n  \u003cli\u003e2008 Ford Explorer 4.6L V8 (Eddie Bauer, Limited, XLT)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Ford Towing \u0026amp; Powertrain Durability Standard\u003c\/h3\u003e\n\u003cp\u003eMaintains robust combustion pressure under heavy towing and high-ambient heat cycles, ensuring your Modular V8 delivers consistent low-end torque without spark blowout or hesitation.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50452214284536,"sku":"DS-EPAZHD6P6","price":110.95,"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-explorer-2006-2008-4-6l-1.jpg?v=1788720966"},{"product_id":"ignition-coil-and-iridium-spark-plugs-for-ford-explorer-2009-2010-4-0l","title":"Ignition Coil and Iridium Spark Plugs for Ford Explorer (2009-2010) 4.0L","description":"\u003ch2\u003eOEM-Spec Ignition Service Kit for 2009-2010 Ford Explorer\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Restores factory secondary ignition voltage and combustion efficiency across all cylinders on the 4.0L SOHC V6 platform.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Explorer Ignition Degradation\u003c\/h3\u003e\n\u003cp\u003eFactory ignition coils and degraded spark plugs on the 4.0L Cologne V6 suffer from thermal breakdown, epoxy casing micro-cracking, and dielectric puncture over extended service intervals. Sustained underhood heat cycling deteriorates internal copper winding resistance, resulting in secondary voltage drop-off, intermittent misfire codes (P0300–P0306), unburned fuel loading catalytic converters, and rough idle under load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis complete ignition refresh kit pairs six heavy-duty ignition coil assemblies with six fine-wire iridium spark plugs. The coils utilize high-grade internal copper windings and high-dielectric epoxy potting to prevent internal flashover and maintain stable dwell times. The laser-welded iridium electrode configuration lowers the required breakdown voltage, resisting thermal erosion and ensuring rapid flame kernel propagation under heavy torque demands.\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;\"\u003e2009-2010 Ford Explorer\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 \/ U251\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\u003e2009 Ford Explorer (Eddie Bauer, Limited, XLT) 4.0L V6\u003c\/li\u003e\n  \u003cli\u003e2010 Ford Explorer (Eddie Bauer, Limited, XLT) 4.0L V6\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Ford Utility Standard\u003c\/h3\u003e\n\u003cp\u003eDesigned to meet the sustained thermal and electrical loads of towing and daily utility use, this ignition kit eliminates misfire-induced hesitation to maintain consistent low-end torque delivery and optimal fuel economy.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50452236632312,"sku":"DS-ETVSLUA51","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-explorer-2009-2010-4-0l-1.jpg?v=1788721326"},{"product_id":"ignition-coil-and-iridium-spark-plugs-for-ford-explorer-2020-2023-3-0l","title":"Ignition Coil and Iridium Spark Plugs for Ford Explorer (2020-2023) 3.0L","description":"\u003ch2\u003eDirect-Fit Ignition Coil and Iridium Spark Plug Kit for 2020-2023 Ford Explorer\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The ignition coil and iridium spark plug kit replaces worn factory ignition components on the 2020-2023 Ford Explorer to prevent boost-induced spark blowout, stabilize secondary voltage delivery, and restore peak combustion efficiency.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Ford Explorer Dielectric Breakdown and Spark Erosion\u003c\/h3\u003e\n\u003cp\u003eThe twin-turbocharged \u003cstrong\u003e3.0L EcoBoost\u003c\/strong\u003e V6 in the \u003cstrong\u003eU625\u003c\/strong\u003e chassis operates under severe cylinder pressures and elevated under-hood thermal cycling. Over time, OEM coil assemblies (interchange \u003cstrong\u003eKT4Z12029A\u003c\/strong\u003e, \u003cstrong\u003eUF-827\u003c\/strong\u003e) experience insulation degradation within their silicone boots and primary winding deterioration. Concurrently, standard spark plug gaps erode, elevating the kilovolt demand required to jump the electrode gap. Under heavy acceleration and towing loads, this results in high-voltage micro-arcing to the cylinder head bore, unburned air-fuel mixtures, stumbling under load, and intermittent P0300 through P0306 diagnostic trouble codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis replacement ignition kit pairs six reinforced pencil coils with laser-welded iridium spark plugs designed for forced-induction stability. Each coil-on-plug unit is manufactured with high-dielectric epoxy potting and optimized copper windings to ensure stable dwell saturation and resist thermal degradation. The iridium center electrode features an ultra-fine wire profile requiring lower ionization voltage, which safeguards the coil drivers while generating a concentrated, high-energy flame kernel. High-temp fluorosilicone boots prevent voltage leakage and flashover even under extreme sustained boost pressures.\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; margin-bottom: 20px;\"\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2020-2023 Ford Explorer\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e3.0L EcoBoost Twin-Turbo V6 \/ U625\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e400 hp \/ 415 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eKT4Z12029A, UF-827, UF827, KIN135766TOP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2020-2023 Ford Explorer ST 3.0L V6 EcoBoost\u003c\/li\u003e\n  \u003cli\u003e2020-2023 Ford Explorer Platinum 3.0L V6 EcoBoost\u003c\/li\u003e\n  \u003cli\u003e2021-2023 Ford Explorer King Ranch 3.0L V6 EcoBoost\u003c\/li\u003e\n  \u003cli\u003e2020-2023 Ford Police Interceptor Utility 3.0L V6 EcoBoost\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the U625 Explorer?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 2020-2023 Ford Explorer equipped with the \u003cstrong\u003e3.0L EcoBoost\u003c\/strong\u003e engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre the iridium spark plugs pre-gapped for forced induction?\u003c\/strong\u003e\u003cbr\u003e Yes, the spark plugs come factory pre-gapped, though verifying the gap with a wire feeler gauge prior to installation is recommended for twin-turbo applications.\u003c\/p\u003e\n\n\u003ch3\u003eThe Ford Heavy-Duty Caliber\u003c\/h3\u003e\n\u003cp\u003eEngineered to withstand the demanding thermal cycles of twin-turbo towing and continuous highway payload demands, this kit delivers stable dwell control and reliable secondary output across all operating ranges.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50594150940920,"sku":"DS-EVLA7SLRW","price":124.95,"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-explorer-2020-2023-3-0l-1.jpg?v=1790057465"},{"product_id":"ignition-coil-spark-plugs-for-ford-explorer-2020-2021-3-3l","title":"Ignition Coil + Spark Plugs for Ford Explorer (2020-2021) 3.3L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Ignition Coil and Spark Plug Service Kit for 2020-2021 Ford Explorer (U625)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The ignition coil and spark plug kit replaces aged factory ignition components on the 2020-2021 Explorer to restore secondary voltage output, eliminate erratic misfires, and stabilize idle dynamics.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Ford Explorer Ignition Breakdown\u003c\/h3\u003e\n\u003cp\u003eUnder continuous heat cycling inside the tight \u003cstrong\u003eU625\u003c\/strong\u003e chassis engine bay, factory ignition coils experience severe dielectric insulation degradation. Over time, internal epoxy potting weakens and secondary winding resistance drifts out of factory tolerances. Combined with premature center electrode erosion on high-mileage spark plugs, this causes weak arc discharge, intermittent secondary ignition breakdown under high combustion pressures, unburned hydrocarbon buildup, and unprompted diagnostic trouble codes like P0300 through P0306.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis direct-replacement ignition package pairs heavy-duty coil-on-plug (COP) units with matched \u003cstrong\u003eMotorcraft SP520\u003c\/strong\u003e spark plugs to deliver stable, high-energy spark across all operating RPMs. Each ignition coil features high-temperature epoxy potting, high-dielectric silicone boots that resist arcing and heat flashover, and balanced primary\/secondary winding ratios designed to meet exact factory dwell and saturation parameters. Matching fresh, correctly gapped plugs with replacement coils ensures even cylinder pressure, clean combustion in direct-injected chambers, and consistent idle stability.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e6 Ignition Coils\u003c\/li\u003e\n  \u003cli\u003e6 Motorcraft Spark Plugs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2020-2021 Ford Explorer\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e3.3L Cyclone V6 \/ U625\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e285 hp \/ 260 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eUF825, SP520, 5C2273, EBC1335, GN10956, C50058DL, 2IGC0594, IC932, DG564, E1325, IGNB10085, JL3Z12029A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2020 Ford Explorer 3.3L V6 (Including Police Interceptor Utility and Hybrid)\u003c\/li\u003e\n  \u003cli\u003e2021 Ford Explorer 3.3L V6 (Including Police Interceptor Utility and Hybrid)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the U625 Explorer?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2020-2021 Ford Explorer equipped with the \u003cstrong\u003e3.3L Cyclone V6\u003c\/strong\u003e engine. \u003cstrong\u003eThis kit does NOT fit 2.3L EcoBoost I4 or 3.0L EcoBoost V6 variants.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eAre spark plug wires required for installation?\u003c\/h4\u003e\n\u003cp\u003eNo, the 3.3L Cyclone uses an independent Coil-on-Plug (COP) architecture where each coil boots directly onto its spark plug without secondary ignition wires.\u003c\/p\u003e\n\n\u003ch3\u003eThe Ford Utility Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to handle severe fleet duty and heavy towing demands, these ignition components maintain steady dwell timing and spark delivery across demanding high-load conditions.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67561489727736,"sku":"DS-EMPCNEJFM","price":199.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-spark-plugs-for-ford-explorer-2020-2021-3-3l-1.jpg?v=1790964368"},{"product_id":"ignition-coil-platinum-spark-plugs-for-ford-explorer-2009-2010-4-6l","title":"Ignition Coil + Spark Plugs for Ford Explorer (2009-2010) 4.6L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Replacement Ignition Coil and Platinum Spark Plug Kit for 2009-2010 Ford Explorer (U251)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The complete ignition kit replaces degrading factory coil-on-plug packs and worn spark plugs on the 2009-2010 Ford Explorer to eliminate misfires, stabilize idle combustion, and restore factory throttle response.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Ford Explorer Ignition Breakdown\u003c\/h3\u003e\n\u003cp\u003eThe factory coil-on-plug (COP) assemblies on the \u003cstrong\u003e4.6L Modular 3V\u003c\/strong\u003e engine suffer from thermal degradation over sustained operating cycles. The internal epoxy insulation weakens under continuous underhood heat soak, leading to dielectric breakdown, secondary winding failure, and micro-arcing against the aluminum cylinder head. Compounded by ground electrode erosion on high-mileage spark plugs, the widened gap demands excessive secondary voltage. This strains the primary ignition circuit, generating hesitation, reduced fuel efficiency, and P0300–P0308 diagnostic trouble codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive tune-up kit restores primary and secondary ignition integrity by pairing heavy-duty ignition coils with factory-specified \u003cstrong\u003eMotorcraft SP509\u003c\/strong\u003e platinum spark plugs. The direct-fit replacement coils utilize premium magnetic copper core windings sealed in high-dielectric epoxy to withstand high thermal loads and prevent voltage bleed-off. Matched with erosion-resistant platinum electrodes, the kit maintains optimal spark kernel energy across all eight cylinders, ensuring rapid flame propagation and smooth combustion under heavy towing and daily driving.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e8 Direct-Fit Ignition Coils\u003c\/li\u003e\n  \u003cli\u003e8 Motorcraft Platinum Spark Plugs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2009-2010 Ford Explorer\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e4.6L Modular 3-Valve V8 \/ U251\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e292 hp \/ 315 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eFD509, SP509, EBC1519, 26C1045, SKIC501, CFD509, C1659VC, 2IGC0157, 673-6200, 52-2071, C1659SPEC, 2-50107, 140033E, 140033EB, 140033EB-8, 140033EK, 140033EK-8, 1IC486, 50107, 36-8180, 5096, 2505-484845, IGC0117, E509, C1659, 022150470A, GN10233, 48874, U5260, C-800, C1659-8, C1659DLGKIT, 8L3Z12029A, 921-2007, 921-2066, 5C1716\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2009 Ford Explorer 4.6L V8\u003c\/li\u003e\n  \u003cli\u003e2010 Ford Explorer 4.6L V8\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the U251 Explorer?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2009-2010 Ford Explorer equipped with the \u003cstrong\u003e4.6L Modular 3V\u003c\/strong\u003e engine. It is not compatible with 4.0L V6 engines or pre-2009 4.6L 2-valve\/early 3-valve heads utilizing high-thread spark plug designs.\u003c\/p\u003e\n\n\u003ch4\u003eAre spark plug wires required for installation?\u003c\/h4\u003e\n\u003cp\u003eNo, the 4.6L 3-valve configuration utilizes a direct coil-on-plug setup; each coil mounts directly above its dedicated spark plug without traditional plug wires.\u003c\/p\u003e\n\n\u003ch3\u003eThe Ford Towing \u0026amp; Utility Standard\u003c\/h3\u003e\n\u003cp\u003eBuilt to handle sustained payload hauling and trailering demands, this ignition package delivers the consistent high-voltage delivery your Ford SUV requires under continuous load.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67561492578552,"sku":"DS-EX5KVYZRT","price":233.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-platinum-spark-plugs-for-ford-explorer-2009-2010-4-6l-1.jpg?v=1790964591"}],"url":"https:\/\/performancechiptuning.com\/collections\/ford-explorer-ignition.oembed","provider":"Performance Chip Tuning","version":"1.0","type":"link"}