{"product_id":"set-of-8-uf413-square-ignition-coils-pack-with-spark-plugs-and-wires","title":"Set of 8 UF413 Square Ignition Coils Pack with Spark Plugs and Wires","description":"\u003cp\u003eOur review of this Set of 8 UF413 Square Ignition Coils Pack with matching spark plugs and wires finds it best suited for owners who need a full ignition refresh for compatible GM V8 engines. The package bundles eight UF413-style ignition coils, eight spark plugs with an OEM 0.04 in (1.02 mm) gap, and eight high-temperature silicone spark plug wires plus wire separators, so the single biggest reason to buy is convenience: replacing coils, plugs, and wires together removes diagnosis guesswork and restores a complete ignition system in one service job.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete kit:\u003c\/strong\u003e Includes eight ignition coils, eight spark plugs, eight spark plug wires and two 4-slot wire separators so a full bank of cylinders can be serviced in one visit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUF413 coil construction:\u003c\/strong\u003e Uses epoxy resin adhesive and pure copper coils to withstand heat and vibration for consistent spark delivery under heavy loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM plug gap:\u003c\/strong\u003e Spark plugs are preset to an OEM design standard 0.04 in (1.02 mm) gap for correct ignition timing and easier installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-temp wires:\u003c\/strong\u003e 7 mm thick silicone wires rated from -40C to +200C reduce voltage leaks and resist heat better than EPDM alternatives.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide vehicle coverage:\u003c\/strong\u003e Specified fit for many Chevy, GMC and Cadillac V8 applications so the kit covers common Silverado, Tahoe, Suburban and Escalade engines.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis kit is for DIY mechanics and professional technicians who want a full ignition component replacement for GM V8 engines (4.3L, 4.8L, 5.3L, 6.0L and select 6.2L\/7.0L models) that match the listed part numbers. It suits vehicles that show multiple-cylinder misfires, rough idle, or where coils and wires are aged or corroded and a complete overhaul is preferred.\u003c\/p\u003e\u003cp\u003eThose who should look elsewhere include owners of non-GM engines or vehicles whose original parts do not match the shown OE numbers; the listing stresses careful comparison of pictures and OE numbers before purchase to avoid fitment mistakes.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGood value for a full eight-cylinder ignition service since coils, plugs and wires are bundled together.\u003c\/li\u003e\n\u003cli\u003eDurable materials in coils and silicone wires offer improved heat resistance and reduced voltage leakage.\u003c\/li\u003e\n\u003cli\u003ePre-gapped spark plugs and included wire separators simplify installation and help ensure correct routing.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eMixed customer feedback on long-term performance, with some reports of misfires and corrosion over time, so results may vary by vehicle and environment.\u003c\/li\u003e\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHAYIAUTO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIgnition coil part numbers\u003c\/td\u003e\n\u003ctd\u003eUF413, D513A, 12570616, 12611424\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpark plug part numbers\u003c\/td\u003e\n\u003ctd\u003e19299585, 41962, 41-962\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpark plug gap\u003c\/td\u003e\n\u003ctd\u003e0.04 in (1.02 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpark plug thread\u003c\/td\u003e\n\u003ctd\u003e0.55 in (14 mm) diameter, 0.69 in (17.5 mm) length, 1.25 pitch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpark wire specs\u003c\/td\u003e\n\u003ctd\u003e7 mm silicone, temp range -40C to +200C, AWG equivalent noted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage contents\u003c\/td\u003e\n\u003ctd\u003e8 coils, 8 plugs, 8 wires, 2x 4-slot separators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThis set is a practical, cost-effective option for owners of compatible Chevy, GMC and Cadillac V8 models who want to replace an entire ignition bank at once. It pairs OEM-style plugs and robust coils with high-temp silicone wires, offering good value and straightforward installation, though buyers should verify OE numbers and be aware that some users report variable longevity and occasional corrosion issues.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWill these fit my Silverado?\u003c\/strong\u003e\u003cbr\u003eCheck the listed vehicle years and part numbers; the kit fits many Silverado 1500\/2500\/3500, Suburban, Tahoe and Express models with the specified engine sizes.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre the spark plugs pre-gapped?\u003c\/strong\u003e\u003cbr\u003eYes, the spark plugs are preset to an OEM gap of 0.04 in (1.02 mm) and inspected during the delivery process.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo the wires resist high temperatures?\u003c\/strong\u003e\u003cbr\u003eYes, the 7 mm silicone wires are rated from -40C to +200C and are more heat resistant than typical EPDM wires.\u003c\/p\u003e","brand":"HAYIAUTO","offers":[{"title":"Default Title","offer_id":48193777598683,"sku":"B0CN31PX2T","price":128.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71RkvU8dUGL._AC_SL1500.jpg?v=1770309158","url":"https:\/\/gearmusthave.com\/products\/set-of-8-uf413-square-ignition-coils-pack-with-spark-plugs-and-wires","provider":"GearMustHave","version":"1.0","type":"link"}