{"product_id":"yeherit-ignition-kit-for-chevy-gmc-v8s-8-uf414-round-coils-10-4mm-silicone-wires-41-110-iridium-plugs-4-8l-6-0l","title":"YEHERIT ignition kit for Chevy\/GMC V8s — 8 UF414 round coils, 10.4mm silicone wires \u0026 41-110 iridium plugs (4.8L–6.0L)","description":"\u003cstrong\u003eComplete ignition overhaul kit: eight UF414 round ignition coils, eight 10.4mm silicone spark plug wires, and eight 41-110 iridium spark plugs engineered for select Chevy, GMC, Cadillac and Buick 4.8L–6.0L V8 engines.\u003c\/strong\u003e\n\n\u003cp\u003eIf your V8 is showing misfires, rough idling, or reduced fuel efficiency, this YEHERIT kit brings the main ignition components together in one package so you can replace aging coils, brittle wires and worn spark plugs at once. The set is built to OE-style fit and specifies the UF414 round coil shape — confirm your vehicle uses round coils (UF414) rather than the square UF413 style before ordering. Included part numbers and broad compatibility make this a convenient, wallet-friendly solution for commonly seen ignition issues on GM trucks and SUVs.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these parts restore engine performance?\u003c\/h3\u003e\n\u003cp\u003eWorn coils, degraded plug wires and old spark plugs can cause weak sparks and incomplete combustion. Replacing all three at the same time helps re-establish consistent spark energy across cylinders, easing misfires and smoothing acceleration. The iridium plugs provide a long-life electrode, while silicone wires and copper-core construction deliver stable conductivity under heat.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUF414 round coils engineered for direct replacement and consistent spark output\u003c\/li\u003e\n  \u003cli\u003e10.4mm silicone spark plug wires with copper core for heat resistance and conductivity\u003c\/li\u003e\n  \u003cli\u003e41-110 iridium spark plugs for prolonged life and reliable ignition\u003c\/li\u003e\n  \u003cli\u003eRestores more complete combustion, reducing rough idle and improving driveability\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles and part numbers does this kit fit?\u003c\/h3\u003e\n\u003cp\u003eThis kit targets a wide range of GM V8 applications — double-check your engine size and coil shape before purchase. It lists fitment for Chevy trucks and SUVs, GMC models, Cadillac CTS and select Buick\/Hummer applications; the product page images show model examples and coil shape for verification.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCommon compatible models: Silverado, Suburban, Tahoe, Avalanche, Camaro, Impala, Express\u003c\/li\u003e\n  \u003cli\u003eGMC: Sierra, Yukon, Envoy, Canyon, Savana; Cadillac CTS; Buick LaCrosse, Rainier; Hummer H3\u003c\/li\u003e\n  \u003cli\u003eIncluded part numbers: UF414, C1512, D514A, 5C1555, E894 and OEM cross references\u003c\/li\u003e\n  \u003cli\u003eConfirm engine displacement (4.8L, 5.3L, 6.0L) and coil is ROUND UF414 prior to ordering\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the build and durability details to expect?\u003c\/h3\u003e\n\u003cp\u003eYEHERIT emphasizes materials and assembly to handle under-hood temperatures and corrosive conditions. The silicone-insulated wires shield the copper core from heat and moisture, while the coils are manufactured to OE-style dimensions. Iridium plugs offer a hard-wearing electrode that resists erosion longer than conventional plugs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSilicone insulation for thermal and environmental resistance\u003c\/li\u003e\n  \u003cli\u003eCopper-core conductors for improved electrical conductivity\u003c\/li\u003e\n  \u003cli\u003ePrecision coil fit and mounting for secure installation\u003c\/li\u003e\n  \u003cli\u003eIridium electrodes designed for extended service life\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow difficult is installation and what should I check first?\u003c\/h3\u003e\n\u003cp\u003eInstallation is a straightforward bolt-and-plug swap for technicians and competent DIYers, but correct coil shape and connector match are essential. Inspect your current coils to verify the round UF414 style; if your vehicle uses the square UF413 design, this kit will not fit. Tighten to torque specs and ensure plug gaps are correct for your engine.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify coil shape (round UF414) before removing old components\u003c\/li\u003e\n  \u003cli\u003eReplace one coil\/wire at a time to avoid cylinder mislabeling\u003c\/li\u003e\n  \u003cli\u003eUse a torque wrench for spark plug installation and proper sealing\u003c\/li\u003e\n  \u003cli\u003eRefer to vehicle service manual for exact plug gap and torque values\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: This kit suits owners and mechanics working on GM 4.8L–6.0L V8 engines who want a full ignition refresh in one purchase. It’s ideal when diagnosing intermittent misfires, rough running, or when preventative maintenance calls for replacing coils, wires and plugs together. If your vehicle requires round UF414 coils and the listed cross-references match, this bundle saves time versus sourcing each item separately.\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 these coils fit my Silverado with a 5.3L engine?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes if your Silverado uses round UF414 coils and the 5.3L engine; verify the coil shape before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are spark plug gaps pre-set on the 41-110 iridium plugs?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Plugs typically arrive with factory gap; always check and adjust to your vehicle’s specified gap before installation.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"YEHERIT","offers":[{"title":"Default Title","offer_id":48081794826398,"sku":"B0F3HW65GV","price":186.32,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/yeherit-front-packaging-kit-view.jpg?v=1785809779","url":"https:\/\/northtrailauto.ca\/products\/yeherit-ignition-kit-for-chevy-gmc-v8s-8-uf414-round-coils-10-4mm-silicone-wires-41-110-iridium-plugs-4-8l-6-0l","provider":"North Trail Auto","version":"1.0","type":"link"}