{"product_id":"marsram-ignition-coil-and-iridium-spark-plug-kit-for-5-4l-v8-ford-f-150-2005-2007-8-fd508-coils-8-plugs-straight-black-boot","title":"Marsram Ignition Coil and Iridium Spark Plug Kit for 5.4L V8 Ford F-150 (2005–2007) — 8 FD508 Coils + 8 Plugs, Straight Black Boot","description":"\u003cp\u003e\u003cstrong\u003eMarsram’s kit delivers eight FD508 ignition coils plus eight iridium spark plugs engineered to restore consistent spark and smooth operation for 5.4L V8 engines in compatible 2005–2007 Ford F-150 and select Ford\/Lincoln trucks.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis complete ignition module and plug set replaces worn or failed components with parts built from high-strength plastics, epoxy resin, and copper windings for the coils, plus long-life iridium tips on the spark plugs. The package is intended specifically for V8 engines using straight black boots — it is not compatible with V10 engines or coils with brown or curved boots. Fitment covers a broad list of Ford and Lincoln vehicles from mid-2000s model years; confirm your original coil appearance and OE part numbers before installing.\u003c\/p\u003e\n\n\u003ch3\u003eWill these coils and plugs fit my 2005–2007 Ford F-150 5.4L?\u003c\/h3\u003e\n\n\u003cp\u003eThey are designed to fit F-150 models equipped with the 5.4L V8 that use straight black-boot ignition coils. The listing replaces several OE and aftermarket part numbers, so cross-reference your vehicle’s existing coils before ordering.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eCompatible with many 2004–2008 Ford F-series 5.4L V8 applications listed in the product details.\u003c\/li\u003e\n  \u003cli\u003eNot compatible with V10 engines or coils that have brown or curved boots.\u003c\/li\u003e\n  \u003cli\u003eReplaces common part numbers such as FD508, DG511, 3L3Z-12029-BA, UF537, and others.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do Marsram ignition coils differ from original equipment?\u003c\/h3\u003e\n\n\u003cp\u003eThese aftermarket coils use epoxy resin and reinforced engineering plastics to resist heat and deformation, while internal windings are made from high-conductivity copper to support quicker, more consistent spark delivery. The design aims to match OEM electrical performance while offering robust thermal resistance.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eDurable outer housing resists melting and engine-bay heat.\u003c\/li\u003e\n  \u003cli\u003eCopper coil windings for reliable electrical conductivity and ignition speed.\u003c\/li\u003e\n  \u003cli\u003eManufactured to replace a range of OE part numbers for direct-fit replacements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance and durability can I expect from the included spark plugs?\u003c\/h3\u003e\n\n\u003cp\u003eMarsram includes iridium-tipped spark plugs that provide a stable, long-lasting electrode surface to minimize gap erosion and maintain consistent combustion over many miles. Iridium electrodes reduce spark degradation and help preserve throttle response and start-up reliability compared to conventional plugs.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eIridium center electrode for long service life and stable spark gap.\u003c\/li\u003e\n  \u003cli\u003eCorrosion-resistant electrodes to reduce gap growth and maintain efficiency.\u003c\/li\u003e\n  \u003cli\u003eDesigned to support complete combustion for quicker starts and steady acceleration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat comes in the kit and what warranty support is offered?\u003c\/h3\u003e\n\n\u003cp\u003eThe Marsram package contains eight ignition coils and eight iridium spark plugs — enough to service all cylinders on V8 engines that accept FD508-style coils. The product is backed by a one-year warranty and customer support to address fitment questions or product concerns.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003ePackage: 8x FD508-compatible ignition coils and 8x iridium spark plugs.\u003c\/li\u003e\n  \u003cli\u003eOne-year limited warranty with customer service available for issues.\u003c\/li\u003e\n  \u003cli\u003eInstallation note: verify coil boot style and part numbers before fitting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This kit is best for DIY mechanics, fleet technicians, and owners of mid-2000s Ford and Lincoln vehicles with the 5.4L V8 who need a full-bank ignition service. Choose this set if your truck uses straight black-boot FD508-style coils and you want a single, ready-to-install package of coils and long-life iridium plugs to restore ignition reliability and responsiveness. If you’re unsure about fitment, compare the coil shape and OE number on your vehicle to the listed references or contact Marsram support for help.\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 compatible with V10 engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. This FD508 kit is only for 5.4L V8 engines with straight black boots, not V10 engines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How many coils and plugs are included in the kit?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The package contains eight ignition coils and eight iridium spark plugs — a full-bank replacement for V8 engines.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Marsram","offers":[{"title":"Default Title","offer_id":48080679829662,"sku":"B0DZWRQ6VM","price":114.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/marsram-front-packaging-8-coils-8-plugs.jpg?v=1785784188","url":"https:\/\/northtrailauto.ca\/products\/marsram-ignition-coil-and-iridium-spark-plug-kit-for-5-4l-v8-ford-f-150-2005-2007-8-fd508-coils-8-plugs-straight-black-boot","provider":"North Trail Auto","version":"1.0","type":"link"}