{"product_id":"ignition-coil-pack-spark-plug-kit-for-gm-3-6l-v6-restore-smooth","title":"Ignition Coil Pack \u0026 Spark Plug Kit for GM 3.6L V6 - Restore Smooth","description":"\u003cp\u003eIn this review the kit is evaluated for owners of GM 3.6 L V6 engines who need a direct replacement ignition kit. This CUSTONEPARTS set of six ignition coils and six iridium spark plugs is aimed at Chevy Traverse, GMC Acadia, Buick LaCrosse and Cadillac SRX\/CTS models from the years listed, and the single biggest reason to buy is its direct-fit design that targets common LLT\/LFX misfire codes and restores smooth idle and throttle response.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect vehicle fit:\u003c\/strong\u003e The kit is designed specifically to fit a wide range of GM 3.6 L V6 models so installation matches OE fitment without modification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSix coils plus six plugs:\u003c\/strong\u003e The complete six-pack of coils and iridium plugs replaces worn components across all cylinders for consistent firing and reduced misfires.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIridium spark plugs:\u003c\/strong\u003e Double-iridium tips are pre-gapped to 0.040 and are rated for long life, helping maintain ignition performance up to 100 k km.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-energy coils:\u003c\/strong\u003e Coils are epoxy-potted with stainless springs and ferrite RFI suppressors to deliver clean spark output at up to 35 kV for efficient combustion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM number compatibility:\u003c\/strong\u003e Replaces common OE references such as UF569, 12590990 and related numbers to simplify parts selection for repairs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis kit is best for owners and DIY mechanics who have GM 3.6 L V6 vehicles showing rough idle, throttle hesitation, or P0300-P0306 misfire codes and want a full cylinder-by-cylinder replacement in one purchase. It suits model years commonly fitted with LLT or LFX engines including GMC Acadia, Chevy Traverse, Buick LaCrosse, Cadillac SRX and CTS.\u003c\/p\u003e\n\u003cp\u003eIt is not aimed at vehicles outside the listed 3.6 L GM fitments or buyers who need a single coil or plug rather than a full six-pack; those users should source individual parts or confirm compatibility with their engine code before purchase.\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\u003eComplete six-coil and six-plug kit eliminates cross-matching and ensures even cylinder performance.\u003c\/li\u003e\n\u003cli\u003eIridium plugs with pre-gap and long life reduce frequency of spark plug service intervals.\u003c\/li\u003e\n\u003cli\u003eCoils include RFI suppression and epoxy potting for durability and stable spark delivery.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFitment is specific to GM 3.6 L applications, so it is not universal and requires verifying year and engine code.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003e6 coils and 6 iridium plugs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReplacement OE numbers\u003c\/td\u003e\n\u003ctd\u003eUF569, 12590990, 12618542 and equivalents\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpark plug tip\u003c\/td\u003e\n\u003ctd\u003eDouble-iridium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlug gap\u003c\/td\u003e\n\u003ctd\u003ePre-gapped 0.040\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoil features\u003c\/td\u003e\n\u003ctd\u003eEpoxy-potted, stainless spring, ferrite RFI suppressor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntended engines\u003c\/td\u003e\n\u003ctd\u003eGM 3.6 L V6 (LLT \/ LFX)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe CUSTONEPARTS ignition coil and spark plug kit is a practical choice for owners of GM 3.6 L V6 vehicles who need to address misfires and rough idle across all cylinders. Because it provides direct-fit coils and long-life iridium plugs in a single package and replaces common OE numbers, it represents good value for a full ignition refresh when the vehicle matches the listed fitments.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this kit stop P0300 or P0306 codes?\u003c\/strong\u003e\u003cbr\u003eIn many cases replacing all six coils and plugs resolves P0300-P0306 misfire codes on affected LLT\/LFX 3.6 L engines when misfires are ignition-related.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre the plugs pre-gapped?\u003c\/strong\u003e\u003cbr\u003eYes, the included iridium plugs are double-iridium and come pre-gapped to 0.040 out of the box.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this replace specific OE parts?\u003c\/strong\u003e\u003cbr\u003eThe kit is offered as a replacement for OE references such as UF569 and 12590990 and other listed equivalents, simplifying OE cross-reference.\u003c\/p\u003e","brand":"CUSTONEPARTS","offers":[{"title":"Default Title","offer_id":48253451796699,"sku":"B0FFB2YGJ7","price":105.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61Gjqzl_YoL._AC_SL1100.jpg?v=1778311367","url":"https:\/\/gearmusthave.com\/products\/ignition-coil-pack-spark-plug-kit-for-gm-3-6l-v6-restore-smooth","provider":"GearMustHave","version":"1.0","type":"link"}