{"product_id":"ena-8-pack-round-ignition-coil-kit-with-iridium-spark-plugs-wires-plug-and-play-for-gm-v8s","title":"ENA 8-Pack Round Ignition Coil Kit with Iridium Spark Plugs \u0026 Wires — Plug-and-Play for GM V8s","description":"\u003cp\u003e\u003cstrong\u003eENA's 8-pack round ignition coils bundled with eight iridium spark plugs and matching plug wires replace worn ignition components on many GM V8 trucks and SUVs for reliable spark delivery and straightforward plug-and-play installation.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf your Chevy or GMC V8 is showing rough idle, misfires, or reduced throttle response, replacing the ignition coils, spark plugs, and wires as a kit can restore consistent combustion. This ENA kit includes eight round UF414-style coil packs (verify your original coils are round UF414 — not square UF413), eight iridium-tipped spark plugs, and an eight-wire silicone-insulated set engineered to match factory routing and reach. The components are designed for direct replacement on a range of Silverado, Sierra, Tahoe, Suburban, Yukon, Avalanche, Camaro and select HD\/Corvette\/Impala models listed in the fitment notes.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I confirm these coils will fit my vehicle?\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, visually confirm your current coil housing shape and match part references. The ENA kit uses the round UF414 coil body; square UF413 coils are incompatible.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCheck coil body shape on the valve cover — must be round UF414.\u003c\/li\u003e\n  \u003cli\u003eCross-reference OEM numbers: 12573190, 5C1555, IC534, GN10165.\u003c\/li\u003e\n  \u003cli\u003eUse the vehicle-year-model fitment list or your VIN in confirmation tools.\u003c\/li\u003e\n  \u003cli\u003eVerify spark plug thread and gap specs for your engine (14 mm thread, 1.0 in gap for this kit).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat improvements should I expect after installing this kit?\u003c\/h3\u003e\n\u003cp\u003eReplacing worn coils, plugs, and wires can reduce misfires and improve throttle response, smoother idling, and more consistent starting. Gains depend on the condition of the original parts.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCleaner, more consistent ignition pulses from new UF414 coil packs.\u003c\/li\u003e\n  \u003cli\u003eLong-life iridium center electrodes for stable spark and longevity.\u003c\/li\u003e\n  \u003cli\u003eSilicone-insulated wires with fiberglass-reinforced cores reduce crossfire and leakage.\u003c\/li\u003e\n  \u003cli\u003ePlug-and-play fit reduces install time compared with individual aftermarket parts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow is quality specified for the spark plugs, wires, and coils?\u003c\/h3\u003e\n\u003cp\u003eEach component is built to match common OE dimensions and electrical characteristics so they can be installed without modifications. The kit includes technical specs to confirm compatibility and performance expectations.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCoil pack specs: 12V, bolt-on mount, 4 terminals, engine-bay placement.\u003c\/li\u003e\n  \u003cli\u003eSpark plug specs: iridium-platinum tip, 14 mm thread, 16 mm hex, 1.0 in gap.\u003c\/li\u003e\n  \u003cli\u003eWire specs: 8 mm diameter, silicone insulation, fiberglass-reinforced latex graphite core.\u003c\/li\u003e\n  \u003cli\u003ePackaged as eight coils, eight plugs, eight wires plus a 12-month warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I know about installation and service life?\u003c\/h3\u003e\n\u003cp\u003eThe kit is engineered for straightforward replacement of like-for-like components and is suitable for DIY mechanics and professional shops. Service life will vary by driving conditions, but iridium plugs and properly sealed coils typically outlast standard copper plugs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned for bolt-on replacement with factory mounting points and electrical connectors.\u003c\/li\u003e\n  \u003cli\u003eFollow torque specs for spark plugs and coil mounting; inspect wiring harness connectors.\u003c\/li\u003e\n  \u003cli\u003eReplace all coils and wires in sets when multiple misfires or aging components are present.\u003c\/li\u003e\n  \u003cli\u003eENA provides a 12-month warranty for added confidence.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? This ENA kit suits owners and technicians working on GM small-block and big-block V8 engines from approximately 2007–2016 who need a complete ignition refresh: eight matching round UF414 coil packs, eight iridium spark plugs, and eight plug wires. Ideal for Silverado and Sierra 1500\/2500\/3500 owners, Tahoe\/Suburban\/Yukon family SUVs, and compatible Camaro and other GM models listed in fitment notes who want a single-purchase replacement that aligns with factory specifications and reduces the guesswork of mixing separate parts.\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: Are these coils compatible with UF413 square coils?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. This kit contains round UF414 coils only; square UF413 coils are a different part and will not fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do the spark plugs come pre-gapped?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The plugs are set to factory-style gap but always verify and adjust to your vehicle's specified gap before installation.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"ENA","offers":[{"title":"Default Title","offer_id":67584872513721,"sku":"B08WZ8G718","price":367.54,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/ena-front-packaging-coil-plug-wire-kit.jpg?v=1790457189","url":"https:\/\/redleafauto.ca\/products\/ena-8-pack-round-ignition-coil-kit-with-iridium-spark-plugs-wires-plug-and-play-for-gm-v8s","provider":"Redleaf Auto","version":"1.0","type":"link"}