{"product_id":"mas-ignition-coil-set-with-spark-plugs-8-straight-boot-coils-motorcraft-sp546-sp515-direct-fit-for-ford-5-4l-v8","title":"MAS Ignition Coil Set with Spark Plugs — 8 Straight-Boot Coils + Motorcraft SP546\/SP515, Direct-Fit for Ford 5.4L V8","description":"\u003cp\u003e\u003cstrong\u003eMAS eight-piece ignition coil set with straight boots plus Motorcraft SP546 and SP515 spark plugs is a direct-fit replacement kit engineered to restore reliable spark delivery for Ford and Lincoln 5.4L V8 engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis complete kit combines eight MAS straight-boot ignition coils and two Motorcraft spark plug models (SP546 and SP515) so you can replace the components most commonly involved in ignition issues in one service. Designed to match OE fitment and electrical characteristics, the set targets 2004–2008 Ford F-150, 2005–2008 F-250\/F-350 Super Duty, 2005–2008 Expedition, 2006–2008 Mark LT, and 2005–2008 Lincoln Navigator applications that use the 5.4L V8. The package comes with a one-year limited warranty and lists compatible part numbers for easy cross-referencing when verifying fit.\u003c\/p\u003e\n\n\u003ch3\u003eHow will this kit affect starting and engine smoothness?\u003c\/h3\u003e\n\u003cp\u003eReplacing worn coils and spark plugs can correct weak or intermittent spark that causes hard starting, long cranks, and rough idle. The MAS coils are engineered as direct replacements to restore consistent high-voltage delivery to the spark plugs, helping combustion occur reliably across all eight cylinders.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRestores reliable spark for smoother idle and reduced misfires\u003c\/li\u003e\n  \u003cli\u003eHelps shorten crank time and improve cold starts\u003c\/li\u003e\n  \u003cli\u003eDesigned to meet OEM electrical specifications for plug gap and firing energy\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles and part numbers are compatible with this kit?\u003c\/h3\u003e\n\u003cp\u003eThis kit targets Ford and Lincoln trucks and SUVs equipped with the 5.4L V8 from model years listed; check your vehicle before ordering. The listing also includes interchangeable OEM and aftermarket part numbers to simplify compatibility checks with your original components.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits 2004–2008 Ford F-150 5.4L, 2005–2008 F-250\/F-350 Super Duty 5.4L\u003c\/li\u003e\n  \u003cli\u003eAlso fits 2005–2008 Ford Expedition, 2006–2008 Lincoln Mark LT, 2005–2008 Lincoln Navigator 5.4L\u003c\/li\u003e\n  \u003cli\u003eCross-references DG511, SP515, SP546, E508, 3L3E-12A366-CA and other common numbers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat specific problems can this replacement set help address?\u003c\/h3\u003e\n\u003cp\u003eThe kit is aimed at common ignition-related drivability issues originating from degraded coils or fouled plugs. While it won’t fix unrelated mechanical or fuel-system problems, swapping in fresh coils and plugs often eliminates ignition faults that trigger check engine lights and poor performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCan resolve misfires, intermittent check-engine-light codes, and rough running\u003c\/li\u003e\n  \u003cli\u003eMay reduce spark plug fouling and uneven cylinder performance\u003c\/li\u003e\n  \u003cli\u003eSupports consistent transmission shift behavior by restoring stable engine operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat’s included and what should I verify before installing?\u003c\/h3\u003e\n\u003cp\u003eYou receive a full set of eight MAS straight-boot ignition coils plus Motorcraft SP546 and SP515 spark plugs—enough to address the entire ignition bank. Before installation, confirm your vehicle’s boot color and part cross-reference numbers to ensure you need straight-boot coils (brown-boot vehicles may require a different MAS part).\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEight MAS straight-boot ignition coils and Motorcraft SP546\/SP515 spark plugs included\u003c\/li\u003e\n  \u003cli\u003eOne-year limited warranty for added protection\u003c\/li\u003e\n  \u003cli\u003eVerify year\/make\/model and original coil boot color (brown-boot vehicles need DG521)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This kit is intended for owners, mechanics, and fleet managers who maintain Ford and Lincoln 5.4L V8 vehicles from the mid-2000s and want a ready-to-install, OE-style replacement for failing ignition coils and worn spark plugs. It’s particularly useful during scheduled tune-ups or when diagnosing ignition misfires, hard starts, or rough running that point to coil and plug wear.\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: Do these coils fit my 2006 Ford F-150 5.4L?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, this MAS set is compatible with 2004–2008 Ford F-150 5.4L engines; confirm with your vehicle selector and part cross-references before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are spark plugs included and which models?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the kit includes Motorcraft SP546 and SP515 spark plugs to replace worn plugs alongside the eight coils.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"MAS","offers":[{"title":"Default Title","offer_id":48080355950750,"sku":"B0777SF5QM","price":264.49,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/mas-front-packaging-coils-and-plugs.jpg?v=1785780591","url":"https:\/\/northtrailauto.ca\/products\/mas-ignition-coil-set-with-spark-plugs-8-straight-boot-coils-motorcraft-sp546-sp515-direct-fit-for-ford-5-4l-v8","provider":"North Trail Auto","version":"1.0","type":"link"}