{"product_id":"mas-curved-boot-ignition-coil-pack-set-8-pack-replacement-for-ford-4-6l-5-4l-v8-direct-fit-oe-match","title":"MAS Curved-Boot Ignition Coil Pack Set — 8-Pack Replacement for Ford 4.6L\/5.4L V8, Direct-Fit OE Match","description":"\u003cstrong\u003eMAS set of 8 curved-boot ignition coil packs is a direct-fit replacement for many Ford, Lincoln, and Mercury V8 engines, restoring consistent spark across all eight cylinders.\u003c\/strong\u003e\n\n\u003cp\u003eIf your V8 is misfiring, running rough, or showing poor throttle response, worn or failing coil packs are often the cause. This MAS kit supplies eight curved-boot ignition coil packs engineered to match OE fitment for numerous 4.6L, 5.4L and 6.8L Ford family engines, including F-150, E-Series, Excursion, Expedition, Mustang, Crown Victoria, Town Car, Navigator, Grand Marquis, and more. Each pack is cross-referenced to common part numbers (DG508, DG473, C1454, FD503, 1L2U-12029-AA, I2LU-12A388-AA) so you can verify compatibility easily.\u003c\/p\u003e\n\n\u003ch3\u003eHow will replacing all eight coil packs affect engine performance?\u003c\/h3\u003e\n\u003cp\u003eReplacing the full set eliminates variations between new and old units, preventing ongoing misfires and smoothing idle and acceleration. Installing a complete set also reduces diagnostic time and the need for repeated repairs when coils fail progressively.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCorrects misfires and rough idle across all cylinders\u003c\/li\u003e\n  \u003cli\u003eImproves throttle response and acceleration consistency\u003c\/li\u003e\n  \u003cli\u003ePrevents repeated trips to the shop by renewing the entire ignition bank\u003c\/li\u003e\n  \u003cli\u003eMaintains even spark delivery for smoother engine operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles and engines are compatible with this MAS DG508 curved-boot set?\u003c\/h3\u003e\n\u003cp\u003eThis kit fits a broad range of Ford, Lincoln, and Mercury V8 models with curved boot ignition configurations. Use the part cross-references and your vehicle year, make, and engine size to confirm fitment before purchasing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e4.6L, 5.4L and 6.8L V8 engines across F-150, F-250, F-350, Super Duty trucks and Excursion\u003c\/li\u003e\n  \u003cli\u003eE-Series, E-150\/E-250\/E-350\/E-450 vans and Club Wagon\/Econoline variants\u003c\/li\u003e\n  \u003cli\u003ePassenger cars including Crown Victoria, Town Car, Mustang, Grand Marquis, and Navigator\u003c\/li\u003e\n  \u003cli\u003eCross-referenced part numbers: DG508, DG473, DG481, C1454, FD503, 1L2U-12029-AA, I2LU-12A388-AA\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat distinguishes the curved-boot DG508 from straight-boot coil options?\u003c\/h3\u003e\n\u003cp\u003eBoot geometry matters because some intake manifold and spark plug access layouts require a curved boot for proper sealing and clearance. MAS DG508 is the curved-boot variant; if your vehicle uses straight boots, choose the DG511 alternative instead.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCurved boots provide better clearance in tight engine bays\u003c\/li\u003e\n  \u003cli\u003eDesigned to match factory sealing angle and plug orientation\u003c\/li\u003e\n  \u003cli\u003eAvoids stress on the ignition tower and spark plug connection\u003c\/li\u003e\n  \u003cli\u003eCheck your current coil boots visually to confirm curved or straight style\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat comes in the box and what warranty is included?\u003c\/h3\u003e\n\u003cp\u003eThe shipment includes a complete set of eight MAS curved-boot ignition coil packs designed as a direct replacement for compatible Ford, Lincoln, and Mercury V8 engines. MAS backs the set with a lifetime warranty—register or enter your vehicle details as instructed by the retailer to confirm fitment and warranty eligibility.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSet of 8 curved-boot ignition coil packs\u003c\/li\u003e\n  \u003cli\u003eCompatible with specified DG and OEM part numbers\u003c\/li\u003e\n  \u003cli\u003eLifetime warranty coverage from MAS\u003c\/li\u003e\n  \u003cli\u003eDealer-style packaging and labeled for straightforward installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This MAS eight-pack is ideal for owners and mechanics replacing multiple failing coils, performing preventative maintenance on high-mileage V8s, or rebuilding an engine where synchronized ignition performance is required. If you drive a Ford, Lincoln, or Mercury with a 4.6L, 5.4L or 6.8L V8 that uses curved ignition boots, this kit delivers direct-fit parts and a warranty designed for long-term reliability. Always verify curved-boot fitment for your application before ordering.\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 a direct replacement for DG508?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. This MAS set is the DG508 curved-boot configuration and fits vehicles that require curved boots.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do these coils come with a warranty?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. MAS provides a lifetime warranty; confirm vehicle compatibility when ordering.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"MAS","offers":[{"title":"Default Title","offer_id":67587626336441,"sku":"B00TGCFYMW","price":110.94,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/mas-front-packaging-curved-boot-coil-set.jpg?v=1790514514","url":"https:\/\/redleafauto.ca\/products\/mas-curved-boot-ignition-coil-pack-set-8-pack-replacement-for-ford-4-6l-5-4l-v8-direct-fit-oe-match","provider":"Redleaf Auto","version":"1.0","type":"link"}