{"product_id":"gbtad-ignition-coil-pack-and-spark-plug-wire-harness-kit-for-gm-5-3l-v8-2007-2011-set-of-8-square-coils-direct-fit","title":"GBTAD Ignition Coil Pack and Spark Plug Wire Harness Kit for GM 5.3L V8 (2007–2011) — Set of 8, Square Coils, Direct-Fit","description":"\u003cp\u003e\u003cstrong\u003eGBTAD Set of 8 square ignition coil packs with a spark plug wires harness is a direct-fit replacement kit designed to restore reliable spark delivery for many GM 5.3L V8 engines from 2007–2011.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis complete kit combines eight square-style ignition coils with a matched spark plug wire harness engineered to match factory routing and electrical characteristics. It’s intended for Chevrolet, GMC, Buick and Cadillac models that use these part numbers and coil form factors. The components are built with high-density epoxy and copper conductor materials to provide consistent conductivity and mechanical protection compared with worn or damaged original parts.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles and part numbers does this kit fit?\u003c\/h3\u003e\n\u003cp\u003eThis set is manufactured to fit a range of GM trucks and SUVs using the square ignition coil form. It lists compatibility for many Chevrolet Silverado, Avalanche, Tahoe, Suburban, Camaro, Corvette, Impala and related GMC, Buick and Cadillac models. Always verify fitment by matching part numbers on your original coils.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCommon referenced part numbers: UF413, 12570616, D510C, 12611424 and related OEM codes.\u003c\/li\u003e\n  \u003cli\u003eDesigned for 5.3L V8 engines in 2007–2011 model years where square coils are used.\u003c\/li\u003e\n  \u003cli\u003eCompatible vehicle families include Chevy, GMC, Buick and Cadillac (see product listing for full model list).\u003c\/li\u003e\n  \u003cli\u003eCompare your factory coil shape and connector to the kit photos before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do these coils and wires improve engine operation?\u003c\/h3\u003e\n\u003cp\u003eReplacing aged coils and brittle spark plug wires helps restore strong, consistent spark timing to the combustion chamber. That addresses symptoms like misfires, rough idle and intermittent check-engine lights caused by ignition faults. While results depend on the vehicle’s overall condition, fresh coils and a proper wire harness reduce ignition-related drivability issues.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRestores ignition voltage stability across all eight cylinders.\u003c\/li\u003e\n  \u003cli\u003eReduces misfire risk caused by cracked wires or degraded coil windings.\u003c\/li\u003e\n  \u003cli\u003eMatched harness routing prevents wire interference and maintains factory routing.\u003c\/li\u003e\n  \u003cli\u003eHigh-density epoxy sealing protects coil internals from moisture and vibration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I check before buying to ensure correct fit?\u003c\/h3\u003e\n\u003cp\u003eBecause GM used different coil designs across similar engines, confirm your existing coil’s shape, connector style and OEM number before purchase. Installing an incompatible coil will prevent starting or proper operation. The kit also includes images and part numbers to help you compare.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMatch the coil housing shape and number of electrical pins to your originals.\u003c\/li\u003e\n  \u003cli\u003eVerify OEM or stamped part numbers on your factory coils against listed codes.\u003c\/li\u003e\n  \u003cli\u003eInspect spark plug boot style and harness length for correct routing in your engine bay.\u003c\/li\u003e\n  \u003cli\u003eContact customer service with vehicle VIN and photos if unsure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and what tools are needed?\u003c\/h3\u003e\n\u003cp\u003eInstallation follows standard ignition-coil replacement steps and can be performed with common hand tools. Basic mechanical skill and a torque wrench for coil mounting bolts will make the job straightforward for most DIYers. If you’re not comfortable working around the ignition system, a professional installation is recommended.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTypical tools: ratchet, socket set, torque wrench and dielectric grease for boots.\u003c\/li\u003e\n  \u003cli\u003eProcedure: disconnect battery, remove coil packs, swap wires, install new coils, torque bolts to spec.\u003c\/li\u003e\n  \u003cli\u003eEstimated time: 1–2 hours for a mechanically inclined DIYer on most models.\u003c\/li\u003e\n  \u003cli\u003eKeep original part numbers and photos for reference if returning or warranty needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This GBTAD kit is intended for owners and technicians repairing ignition faults on GM 5.3L V8s from the late 2000s who need a full set replacement—especially when multiple coils or the original wire harness show wear, cracking, or electrical failure. It’s suitable for DIY mechanics wanting a direct-fit aftermarket option and for shops performing multi-cylinder ignition repairs. Always confirm your vehicle’s coil type and OEM numbers against the kit’s listings before purchase to ensure compatibility.\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: Will this kit fit my 2008 Chevy Silverado 5.3L?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: If your Silverado uses the square-style coils and matches the listed part numbers (e.g., UF413, 12570616), this kit is a direct fit. Verify your coil shape and OEM number first.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the kit include all eight coils and wires?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, the set contains eight ignition coil packs plus a matching spark plug wire harness to replace all cylinders at once.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"GBTAD","offers":[{"title":"Default Title","offer_id":48080477749406,"sku":"B0DYP3FJB9","price":223.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/gbtad-front-packaging-ignition-coil-set.jpg?v=1785781796","url":"https:\/\/northtrailauto.ca\/products\/gbtad-ignition-coil-pack-and-spark-plug-wire-harness-kit-for-gm-5-3l-v8-2007-2011-set-of-8-square-coils-direct-fit","provider":"North Trail Auto","version":"1.0","type":"link"}