{"product_id":"hengcool-ignition-coil-iridium-spark-plug-kit-uf553-for-ford-lincoln-3-5-3-7l-direct-fit-oe-style-reliability","title":"HENGCOOL Ignition Coil \u0026 Iridium Spark Plug Kit UF553 for Ford\/Lincoln 3.5–3.7L — Direct-Fit, OE-Style Reliability","description":"\u003cp\u003e\u003cstrong\u003eHENGCOOL UF553 is a direct-fit ignition coil and iridium spark plug kit engineered to replace worn units on Ford, Lincoln and select Mazda 3.5L\/3.7L V6 engines for reliable spark delivery and smoother idle.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis complete kit pairs high-quality ignition coils with iridium spark plugs manufactured to match OE fitment and electrical characteristics. The assemblies are designed for non‑turbo (non‑EcoBoost) V6 engines and cover a broad range of Ford, Lincoln, Mercury and some Mazda applications across several model years. Built and tested for thermal stability, vibration resistance and long service life, the kit aims to restore proper combustion, reduce misfires and help maintain fuel efficiency when installed correctly.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles and engines are these HENGCOOL coils and plugs compatible with?\u003c\/h3\u003e\n\u003cp\u003eThese parts are intended for naturally aspirated Ford and Lincoln V6 engines in the 3.5L and 3.7L family, and for select Mazda models. They are not suitable for turbocharged Ecoboost engines. Always verify year, engine size and OEM part numbers before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFord: Edge (2007–2016), Explorer (2011–2016), F‑150 XL\/XLT (2015–2016), Flex (2009–2016), Fusion (2010–2012), Mustang 3.7L (2011–2016), Transit 3.7L (2015–2016)\u003c\/li\u003e\n  \u003cli\u003ePolice \u0026amp; Special Use: Police Interceptor Sedan\/Utility (2013–2016)\u003c\/li\u003e\n  \u003cli\u003eLincoln: MKZ, MKX, MKS, MKT across listed years (see fitment list)\u003c\/li\u003e\n  \u003cli\u003eMercury \u0026amp; Mazda: Mercury Sable (2008–2009), Mazda 6 compatible in some 3.7L years\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do these coils and spark plugs improve engine performance?\u003c\/h3\u003e\n\u003cp\u003eReplacing degraded coils and worn iridium plugs restores consistent spark energy, which reduces misfires and stabilizes idle. While not a cure-all for mechanical issues, fresh ignition components promote more complete combustion and smoother throttle response.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRestores correct spark timing and intensity for each cylinder\u003c\/li\u003e\n  \u003cli\u003eHelps reduce rough idling and intermittent misfires\u003c\/li\u003e\n  \u003cli\u003eSupports efficient fuel burn that can aid throttle feel and emissions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the technical specifications I should know before installing?\u003c\/h3\u003e\n\u003cp\u003eThe kit follows OE-style specifications to ensure plug fit and coil connector compatibility. Familiarize yourself with thread sizes, connector pins and preset gaps to avoid fitment and performance problems.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible OEM replacement numbers: UF553 \/ UF‑553 and many cross references listed by the manufacturer\u003c\/li\u003e\n  \u003cli\u003eIgnition coil connector: 2‑pin design to match vehicle harness\u003c\/li\u003e\n  \u003cli\u003eSpark plug specs: 14mm thread, heat range 6, 16mm (5\/8\") hex, preset gap 0.044 in\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs installation difficult and what durability can I expect?\u003c\/h3\u003e\n\u003cp\u003eInstallation follows standard ignition coil and plug replacement procedures and typically requires basic hand tools and torque control for the plugs. Components are manufactured to endure temperature swings and vibration, with factory testing for thermal shock and humidity.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned to match OE dimensions for bolt‑in replacement\u003c\/li\u003e\n  \u003cli\u003eUndergoes vibration and thermal testing for reliability\u003c\/li\u003e\n  \u003cli\u003eSuitable for DIY replacement or professional installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This HENGCOOL UF553 coil and iridium plug kit is intended for owners or technicians maintaining naturally aspirated Ford\/Lincoln\/Mazda V6 3.5L and 3.7L engines who need an OEM‑style replacement at a value price. It’s appropriate for drivers experiencing misfires, rough idle, decreased fuel economy or those performing routine tune‑ups. Before purchasing, confirm your vehicle year, engine displacement and OE part number to ensure proper fitment. If you’re uncertain about compatibility or installation steps, consult a service manual or a certified technician.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these coils and spark plugs compatible with Ecoboost engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No — this UF553 kit is not compatible with turbocharged Ecoboost engines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What is the preset gap on the spark plugs?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The iridium spark plugs are preset to a 0.044 inch gap.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"HENGCOOL","offers":[{"title":"Default Title","offer_id":67585014595769,"sku":"B0DB1Y22BT","price":175.62,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/hengcool-front-packaging-uf553.jpg?v=1790463491","url":"https:\/\/redleafauto.ca\/products\/hengcool-ignition-coil-iridium-spark-plug-kit-uf553-for-ford-lincoln-3-5-3-7l-direct-fit-oe-style-reliability","provider":"Redleaf Auto","version":"1.0","type":"link"}