{"product_id":"faersi-ignition-coil-pack-for-gm-v8s-direct-fit-uf271-d581-replacement-improved-durability","title":"FAERSI Ignition Coil Pack for GM V8s — Direct-Fit UF271\/D581 Replacement, Improved Durability","description":"\u003cp\u003e\u003cstrong\u003eFAERSI ignition coil pack replacement restores reliable spark to compatible GM V8 engines, replacing UF271\/D581-style coils for Chevrolet, GMC, Cadillac and related models.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen an ignition coil begins to fail it can cause rough idling, misfires, reduced fuel economy, and a check engine light. This FAERSI coil pack is built as a direct-fit replacement for many GM and Isuzu applications—offering the same mounting points and electrical connections as original equipment while using upgraded materials for durability. It ships as a complete coil pack assembly designed to swap in quickly and return the ignition system to consistent high-voltage output.\u003c\/p\u003e\n\n\u003ch3\u003eWhich vehicles and OEM numbers does this coil pack fit?\u003c\/h3\u003e\n\u003cp\u003eThis coil pack is compatible with a wide range of General Motors and related vehicles that use the UF271\/D581 family of coils. Always compare the physical connector and mounting arrangement on your original coil before purchasing to confirm fitment.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCommon vehicle fits: Chevy Silverado (1500\/2500\/3500), Avalanche, Suburban, Tahoe, Express 3500\u003c\/li\u003e\n  \u003cli\u003eGMC models: Sierra (1500\/2500\/3500), Savana, Yukon XL\u003c\/li\u003e\n  \u003cli\u003eCadillac \u0026amp; others: Escalade, plus select Hummer H2 and Isuzu NPR applications\u003c\/li\u003e\n  \u003cli\u003eOEM cross-references: UF271, D581, 12558693, 12556893, 12570553, 5C1083, 3859078 and related numbers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this coil pack improve ignition performance?\u003c\/h3\u003e\n\u003cp\u003eFAERSI coil packs are manufactured to meet or exceed the electrical output of typical OE coils, providing stronger, more consistent spark energy. That helps reduce cylinder misfires and supports smoother acceleration when the ignition system is functioning properly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-quality copper windings and improved insulation for steady high-voltage delivery\u003c\/li\u003e\n  \u003cli\u003eReduced electrical leakage and better resistance to heat-related degradation\u003c\/li\u003e\n  \u003cli\u003eDesigned to help resolve misfire, hesitation, and irregular idling caused by failing coils\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I expect during installation and maintenance?\u003c\/h3\u003e\n\u003cp\u003eInstallation is intended to be straightforward for a technician or experienced DIYer; the unit is a direct replacement using the factory mounting and electrical hookup. Replacing all coils at once is recommended when one has failed since others of similar age are likely to be degrading as well.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect-fit design for same bolt pattern and connector layout as OE\u003c\/li\u003e\n  \u003cli\u003eNo special programming required—plug-and-play in most applications\u003c\/li\u003e\n  \u003cli\u003eInspect spark plugs and wiring when changing coils to ensure optimum system reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat warranty and build quality can I rely on?\u003c\/h3\u003e\n\u003cp\u003eFAERSI emphasizes component quality and backs this coil pack with a one-year unlimited-mileage guarantee. Materials and manufacturing focus on corrosion resistance, abrasion protection, and stable electrical resistance under heat and vibration.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eConstruction uses high-grade materials for longer service life\u003c\/li\u003e\n  \u003cli\u003eResistant coatings to limit corrosion and wear in engine-bay environments\u003c\/li\u003e\n  \u003cli\u003eOne-year unlimited-mileage warranty from FAERSI for added confidence\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This FAERSI ignition coil pack is aimed at owners and mechanics working on GM and related V8 vehicles that cross-reference UF271\/D581-style coils who want a dependable, direct-replacement unit. It suits fleet maintainers, DIY enthusiasts, and professional shops needing a robust spare or repair part to restore proper ignition function without modifying the vehicle’s wiring or control systems.\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: Is this coil pack a direct replacement for UF271?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. This FAERSI unit is a direct-fit replacement compatible with UF271\/D581 cross-reference numbers when the connector and mounting match.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Should I replace all coils at once?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It's recommended to replace all coils together because if one coil fails others of the same age are likely to fail soon after.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"FAERSI","offers":[{"title":"Default Title","offer_id":48087210197150,"sku":"B07HGXLWFF","price":40.09,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/faersi-front-view-coil-pack.jpg?v=1785919048","url":"https:\/\/northtrailauto.ca\/products\/faersi-ignition-coil-pack-for-gm-v8s-direct-fit-uf271-d581-replacement-improved-durability","provider":"North Trail Auto","version":"1.0","type":"link"}