{"product_id":"bdfhyk-ignition-coils-dg521-and-iridium-spark-plugs-sp509-8-pack-set","title":"BDFHYK Ignition Coils DG521 and Iridium Spark Plugs SP509 - 8 Pack Set","description":"\u003cp\u003eOur review of the BDFHYK ignition coil and spark plug kit finds it best suited for owners of compatible Ford and Lincoln V8\/V10 trucks and SUVs who need a full ignition refresh. The single biggest reason to buy is the combination of durable coil construction using Japan-imported rubber and Germany-varnished wire with iridium-tipped spark plugs that promise longer service life; taken together this kit targets vehicles showing hard starting, loss of power, or increased fuel consumption after long mileage.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete 8-piece kit:\u003c\/strong\u003e Supplies eight ignition coils and matching iridium spark plugs so all cylinders are serviced at once for consistent performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable coil materials:\u003c\/strong\u003e Coil packs use Japan-imported rubber and Germany-imported varnished wire for resistance to heat and vibration under heavy use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIridium spark plugs:\u003c\/strong\u003e Spark plugs feature iridium electrodes and hydrostatic ceramics that are hot riveted for improved ignition and a longer life than standard plugs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOE cross-reference support:\u003c\/strong\u003e Includes multiple OE numbers such as DG521, IC697 and others to help confirm fitment with factory parts lists.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintenance trigger guidance:\u003c\/strong\u003e Intended for cars past roughly 80,000 km or showing symptoms like hard starts, rough idle, or reduced fuel economy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer support:\u003c\/strong\u003e Sold by a dedicated automotive component maker who promises a response within 48 hours for product issues.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis kit is aimed at owners of compatible Ford and Lincoln models with V8 or V10 engines - examples include late 2000s to early 2010s Lincoln Mark LT and Navigator, and Ford F-150 through F-550 Super Duty and Expedition families - who prefer to replace all ignition components at once to restore smooth running. It is also suitable for DIY mechanics comfortable verifying OE numbers and doing plug and coil swaps.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include buyers who do not have one of the listed compatible models or who prefer OEM-branded parts from their dealer; also, shoppers expecting guaranteed perfect fit without checking OE cross-references may encounter fit or sizing variance reported by some users.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGood value for replacing all coils and plugs together, simplifying maintenance across eight cylinders.\u003c\/li\u003e\n\u003cli\u003eHigher-end materials on coils and iridium plugs can improve ignition reliability and extend service intervals.\u003c\/li\u003e\n\u003cli\u003eClear OE reference list helps owners confirm compatibility before purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSome customers reported mixed fitment and an isolated misfiring cylinder, so measuring and OE verification is important.\u003c\/li\u003e\n\u003cli\u003eA few users found durability varied, meaning longevity may not match every vehicle or driving condition.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eBDFHYK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContents\u003c\/td\u003e\n\u003ctd\u003e8 ignition coils and 8 iridium spark plugs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Engines\u003c\/td\u003e\n\u003ctd\u003eV8 and V10 4.6L, 5.4L, 6.8L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOE Numbers (coils)\u003c\/td\u003e\n\u003ctd\u003eDG521, IC697, 8L3Z12029A, FD509 and others\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOE Number (plugs)\u003c\/td\u003e\n\u003ctd\u003eSP509, PZNAR6A11H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoil Materials\u003c\/td\u003e\n\u003ctd\u003eJapan-imported rubber, Germany-varnished wire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpark Plug Tip\u003c\/td\u003e\n\u003ctd\u003eIridium electrode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe BDFHYK coil and plug set is a practical, cost-effective option for owners of the listed Ford and Lincoln models who need to address hard starts, loss of power or high fuel use. It pairs durable coil construction with iridium plugs to deliver improved ignition performance and value when all eight cylinders are serviced together, provided buyers confirm OE compatibility before installation.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill these fit my Ford F-150?\u003c\/strong\u003e\u003cbr\u003eThey fit F-150 models within the listed years and engines; always verify your vehicle year, engine size and OE numbers such as DG521 or IC697 before purchasing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre the spark plugs iridium?\u003c\/strong\u003e\u003cbr\u003eYes, the spark plugs in this kit use iridium electrodes and hydrostatic ceramics for longer life and improved ignition.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen should I replace these parts?\u003c\/strong\u003e\u003cbr\u003eIf your vehicle has traveled more than about 80,000 km or shows hard starting, long cranking, reduced power, or increased fuel consumption, consider replacing coils and plugs.\u003c\/p\u003e","brand":"BDFHYK","offers":[{"title":"Default Title","offer_id":48672751485147,"sku":"B0CG8G3853","price":62.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71U-o0_2iqL._AC_SL1500.jpg?v=1778638802","url":"https:\/\/gearmusthave.com\/products\/bdfhyk-ignition-coils-dg521-and-iridium-spark-plugs-sp509-8-pack-set","provider":"GearMustHave","version":"1.0","type":"link"}