{"product_id":"ena-ignition-coil-pack-for-ford-mercury-v8s-dg508-fd503-direct-fit-replacement-with-lifetime-warranty","title":"ENA Ignition Coil Pack for Ford\/Mercury V8s (DG508\/FD503) — Direct-Fit Replacement with Lifetime Warranty","description":"\u003cp\u003e\u003cstrong\u003eENA Ignition Coil Pack is a direct-fit replacement for Ford and Mercury 4.6L, 5.4L and 6.8L V8 engines, designed to restore reliable spark, engine performance, and drivability.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIf your F-series truck, Expedition, Navigator or Lincoln shows symptoms like misfires, hard starts, rough idle or a check engine light, a faulty coil pack is often the cause. This ENA coil pack is built to match or improve original equipment (OE) form, fit and function for models using the DG508\/FD503 family of coils. It’s supplied with a lifetime warranty and engineered to make installation straightforward while delivering consistent ignition energy under typical driving conditions.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles and engines does this coil pack fit?\u003c\/h3\u003e\n\u003cp\u003eThis ENA coil pack is compatible with a broad range of Ford and Mercury vehicles that use the DG508\/FD503-style ignition system. It fits 4.6L, 5.4L and 6.8L V8 engines found across pickup, SUV and full-size sedan lines.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCommon compatible models: Ford F-150, F-250, E-150, E-350, Super Duty series.\u003c\/li\u003e\n  \u003cli\u003eSUV and luxury: Expedition, Lincoln Navigator, Town Car, Crown Victoria, Grand Marquis.\u003c\/li\u003e\n  \u003cli\u003eUseful for both fleet and consumer vehicles using the specified V8 engines and connector type.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow will replacing the coil pack affect drivability?\u003c\/h3\u003e\n\u003cp\u003eSwapping in a healthy ENA coil pack can eliminate ignition-related faults that cause reduced power and erratic running. Expect smoother acceleration, fewer misfires and a more stable idle once the ignition spark is restored to specification.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReduces no-start or hard-start conditions related to weak spark.\u003c\/li\u003e\n  \u003cli\u003eHelps remove misfires that trigger check engine lights and degrade performance.\u003c\/li\u003e\n  \u003cli\u003eCan prevent plug fouling and minimize risk of catalytic converter stress from unburned fuel.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat makes ENA’s coil pack different from cheaper replacements?\u003c\/h3\u003e\n\u003cp\u003eENA designs these coils to meet or exceed OE standards in mechanical fit and electrical output, using materials and testing protocols aimed at durability. The product focuses on simple, accurate fitment and consistent spark energy rather than low-cost shortcuts that often shorten service life.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eManufactured to match OE dimensions for direct installation without modifications.\u003c\/li\u003e\n  \u003cli\u003eQuality control and component choices intended to reduce premature failure.\u003c\/li\u003e\n  \u003cli\u003eBacked by a lifetime warranty for added ownership confidence.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs installation DIY-friendly, and what should I check before buying?\u003c\/h3\u003e\n\u003cp\u003eInstallation is generally straightforward for anyone comfortable with basic engine-bay work; the pack replaces the OE unit using the existing electrical connector and mounting points. Before purchasing, confirm vehicle compatibility by matching your VIN, engine size, connector type or OE part number to DG508\/FD503 equivalency.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRequires standard hand tools and basic safety precautions (battery disconnected).\u003c\/li\u003e\n  \u003cli\u003eVerify fit using vehicle VIN or compare against your original coil part number.\u003c\/li\u003e\n  \u003cli\u003eUse the ENA garage or vehicle lookup to double-check compatibility for a precise match.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis ENA Ignition Coil Pack is for owners, mechanics and fleet managers who need a reliable, drop-in ignition coil solution for Ford and Mercury V8 engines (4.6L, 5.4L, 6.8L). If you’re troubleshooting hard starts, misfires, poor fuel economy or intermittent check engine lights and you’ve confirmed DG508\/FD503 compatibility, this unit is intended to restore ignition performance while offering long-term support via a lifetime warranty.\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: Will this coil pack fit my Ford 5.4L V8?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Check compatibility by VIN or match your OE part number to DG508\/FD503 equivalents; it fits many Ford 4.6L, 5.4L and 6.8L V8 models.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does ENA offer a warranty for this ignition coil?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, ENA includes a lifetime warranty—confirm fitment before installation to keep the warranty valid.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"ENA","offers":[{"title":"Default Title","offer_id":48087020339358,"sku":"B00ENOOHI0","price":31.97,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/ena-coilpack-front-view_8f969d3d-946f-4241-9c2a-85289a5fd71d.jpg?v=1785914183","url":"https:\/\/northtrailauto.ca\/products\/ena-ignition-coil-pack-for-ford-mercury-v8s-dg508-fd503-direct-fit-replacement-with-lifetime-warranty","provider":"North Trail Auto","version":"1.0","type":"link"}