{"product_id":"sparkwhiz-ignition-coils-kit-set-of-8-uf413-direct-fit-with-iridium-plugs-8mm-wires-plug-and-play","title":"SPARKWHIZ Ignition Coils Kit Set of 8 — UF413 Direct-Fit with Iridium Plugs \u0026 8mm Wires, Plug-and-Play","description":"\u003cp\u003e\u003cstrong\u003eSPARKWHIZ Set of 8 UF413 Ignition Coils Pack \u0026amp; Spark Plugs \u0026amp; Wires Set is a complete plug-and-play ignition kit designed to replace worn factory coils, plugs, and leads for a stronger, more consistent spark.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis kit bundles eight UF413 direct-fit ignition coils with iridium spark plugs and 8mm OE-standard spark plug wires so you can replace the entire ignition circuit in one service. Each component matches common OEM reference numbers (C1511, UF413, D510C, D513A, 5C1554, IC533, 12570616, 12611424 and others) and is engineered for durability in everyday driving and higher-demand conditions. The coils use copper windings and polyester rubber insulation, the plugs feature iridium electrodes, and the wires follow OE specifications for plug compatibility and routing.\u003c\/p\u003e\n\n\u003ch3\u003eHow will this SPARKWHIZ kit improve ignition performance?\u003c\/h3\u003e\n\u003cp\u003eUpgrading all three ignition components at once restores original spark energy and consistency across cylinders. New coils deliver higher discharge energy than many aged factory units, iridium plugs sustain stable sparks at high temperatures, and fresh wires reduce electrical leakage.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigher discharge energy for stronger spark per coil\u003c\/li\u003e\n  \u003cli\u003eIridium plugs provide durable electrodes and reliable ignition\u003c\/li\u003e\n  \u003cli\u003e8mm OE-style wires minimize misfires and crossfire\u003c\/li\u003e\n  \u003cli\u003eComplete set replaces aging or mismatched parts for balanced firing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these parts fit my vehicle and how do I verify compatibility?\u003c\/h3\u003e\n\u003cp\u003eThe kit is compatible with specific Cadillac, Hummer, Chevrolet, and GMC model years that use UF413-style coils. Fitment varies by engine and year, so always check your vehicle’s part numbers against the OEM references or enter the vehicle details in the fitment checker before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompare your current coil’s part number to C1511, UF413, etc.\u003c\/li\u003e\n  \u003cli\u003eUse vehicle make, model, year, and engine to confirm fit\u003c\/li\u003e\n  \u003cli\u003eContact customer support with VIN for precise verification\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow difficult is installation and what tools or tips help?\u003c\/h3\u003e\n\u003cp\u003eInstallation is intended to be plug-and-play for technicians or experienced DIYers—coils, plugs, and wires mount in the factory locations and use existing harnesses. For a smooth installation, use the original tool when possible and lightly coat the coil’s rubber boots with silicone spray to prevent cracking during future disassembly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRecommended: original installation tools and a torque wrench for plugs\u003c\/li\u003e\n  \u003cli\u003eSpray silicone on coil boots during assembly to protect rubber\u003c\/li\u003e\n  \u003cli\u003eReplace one cylinder at a time to maintain correct firing order\u003c\/li\u003e\n  \u003cli\u003eCheck and clean spark plug wells before fitting new parts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and quality features are included in the SPARKWHIZ components?\u003c\/h3\u003e\n\u003cp\u003eThe UF413 coils use German-manufactured copper windings and are encased in polyester rubber for improved thermal and mechanical resistance. The iridium spark plugs have a high-melting-point electrode for long service life, while the 8mm wires follow OE dimensions for consistent routing and electrical insulation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCopper-wound ignition coils wrapped in durable polyester rubber\u003c\/li\u003e\n  \u003cli\u003eIridium spark plugs for extended electrode life and stable sparks\u003c\/li\u003e\n  \u003cli\u003e8mm OE-standard spark plug wires to reduce leakage and interference\u003c\/li\u003e\n  \u003cli\u003eManufactured to match common OEM reference numbers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The SPARKWHIZ Set of 8 UF413 Ignition Coils, Spark Plugs \u0026amp; Wires Set is aimed at owners and mechanics replacing multiple ignition parts at once—especially vehicles showing aging coils, misfires, or inconsistent performance. It’s ideal for those who want a complete, direct-replacement kit that restores even firing across all cylinders and reduces the chance of repeated failures from using mixed-age components.\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: Does this kit include everything needed for an 8-cylinder engine?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—this set supplies eight UF413 coils, eight iridium spark plugs, and eight 8mm plug wires for a full 8-cylinder ignition replacement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Should I use any lubricant when installing the coils?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—lightly spray silicone on coil boots during assembly to protect the rubber and prevent cracking during future removal.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"SPARKWHIZ","offers":[{"title":"Default Title","offer_id":55172692115799,"sku":"B0C9GK1FGX","price":179.88,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/sparkwhiz-front-box-set.jpg?v=1790454862","url":"https:\/\/britishgarage.co.uk\/products\/sparkwhiz-ignition-coils-kit-set-of-8-uf413-direct-fit-with-iridium-plugs-8mm-wires-plug-and-play","provider":"British Garage","version":"1.0","type":"link"}