{"product_id":"sykrss-ignition-coil-and-iridium-spark-plug-kit-for-ford-4-6l-5-4l-v8-8-coil-8-plug-pack-direct-fit-replacement","title":"SYKRSS Ignition Coil and Iridium Spark Plug Kit for Ford 4.6L\/5.4L V8 — 8-Coil + 8-Plug Pack, Direct-Fit Replacement","description":"\u003cstrong\u003eComplete 8-coil and 8-spark-plug kit engineered to stop misfires and restore power for Ford 4.6L\/5.4L V8 engines.\u003c\/strong\u003e\n\n\u003cp\u003eIf your F-150, Expedition, Mustang, Explorer, or Lincoln is showing misfire codes, rough idle, or reduced throttle response, this SYKRSS kit replaces every ignition coil and plug at once to eliminate intermittent faults and return consistent spark performance. The package includes eight direct-fit ignition coils and eight pre-gapped iridium spark plugs designed for Ford modular V8 heads (4.6L\/5.4L) and compatible vehicles—no wire splicing or modifications required.\u003c\/p\u003e\n\n\u003ch3\u003eHow will replacing all eight coils and plugs help my truck?\u003c\/h3\u003e\n\u003cp\u003eSwapping the whole bank at once stops chasing single-coil failures and prevents cross-cylinder issues that arise when old and new components are mixed. Consistent new components deliver predictable combustion, reduce misfire-related limp behavior, and often extinguish check-engine lights tied to ignition faults.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEliminates intermittent misfires caused by aging coils or fouled plugs.\u003c\/li\u003e\n  \u003cli\u003eRestores even cylinder firing for smoother idle and steadier revs.\u003c\/li\u003e\n  \u003cli\u003ePre-gapped plugs save installation time and reduce tuning guesswork.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these coils and plugs fit my vehicle without modification?\u003c\/h3\u003e\n\u003cp\u003eYes — the SYKRSS coils and plugs are designed to match OEM mounting points and electrical connectors for specified Ford, Lincoln, and Mercury models. They are manufactured to align with part numbers like DG521 and SP509 for a bolt-in swap, so you can replace them using factory wiring and brackets.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect-fit replacements for many 2008–2010 Ford 4.6L\/5.4L and select Super Duty models.\u003c\/li\u003e\n  \u003cli\u003ePlug pre-gap set at factory tolerance; torque to 25–30 N·m (22 ft-lbs) during install.\u003c\/li\u003e\n  \u003cli\u003eNo cutting, splicing, or adapter harnesses required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat makes these coils and iridium plugs more durable than cheap alternatives?\u003c\/h3\u003e\n\u003cp\u003eSYKRSS improves on stock designs with higher-grade internal materials and tougher external protection. Coils use quality enameled copper windings and are potted in heat-resistant epoxy, while silicone boots are formulated to resist high under-hood temperatures and vibration that commonly crack lesser boots.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGerman-imported winding and Japanese epoxy potting for long-term reliability.\u003c\/li\u003e\n  \u003cli\u003eSilicone boots rated for high temperatures and repeated flex cycles.\u003c\/li\u003e\n  \u003cli\u003eIridium electrode and ceramic insulation for extended life and stable firing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does SYKRSS support buyers after purchase?\u003c\/h3\u003e\n\u003cp\u003eTo reduce fitment anxiety, SYKRSS offers quick pre-install fit checks and a straightforward replacement promise. Provide your VIN or Year\/Make\/Model and they will confirm compatibility, and the kit is covered by a one-year replacement policy for defective coils.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVIN fitment check—typical reply within hours.\u003c\/li\u003e\n  \u003cli\u003e1-year hassle-free replacement for failed coils.\u003c\/li\u003e\n  \u003cli\u003eCustomer guidance on correct torque and installation best practices.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this kit is for: Vehicle owners and independent mechanics who want a reliable, cost-effective fix for misfires and ignition-related drivability issues on Ford 4.6L\/5.4L V8 platforms. It’s ideal for anyone replacing multiple coils and plugs at once—fleet technicians, DIY enthusiasts tackling a check-engine light, or owners preparing a truck or SUV for towing and heavy use who need predictable ignition performance.\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 2009 F-150 5.4L?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The kit is a direct fit for many 2008–2010 Ford 5.4L modular V8 engines; provide VIN to double-check before installing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are the spark plugs pre-gapped and ready to install?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. SYKRSS spark plugs arrive pre-gapped to factory spec; torque to 25–30 N·m (22 ft-lbs) during installation.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"SYKRSS","offers":[{"title":"Default Title","offer_id":48079883501726,"sku":"B0D3VB5SC3","price":105.47,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/sykrss-front-packaging.jpg?v=1785774261","url":"https:\/\/northtrailauto.ca\/products\/sykrss-ignition-coil-and-iridium-spark-plug-kit-for-ford-4-6l-5-4l-v8-8-coil-8-plug-pack-direct-fit-replacement","provider":"North Trail Auto","version":"1.0","type":"link"}