{"product_id":"bang4buck-8pcs-ignition-coils-pack-uf271-8-spark-plug-wires-whole","title":"BANG4BUCK 8Pcs Ignition Coils Pack UF271 + 8 Spark Plug Wires - Whole","description":"\u003cp\u003eIn this review the reviewer looks at the BANG4BUCK complete ignition coil and spark plug wire kit, built as a one-stop replacement for 8 cylinders. The bottom line: this kit is ideal for owners who need a full, direct-fit swap to restore engine smoothness and solve idle jitter without sourcing parts individually. The pack includes eight D581 UF271 square ignition coils plus an 8-piece spark plug wire set and a wire separator loom, and the most compelling reason to buy is the immediate improvement in throttle response and reduced misfire when compared to aging coils.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete replacement:\u003c\/strong\u003e The kit contains 8 D581 UF271 ignition coils, a full 8-piece spark plug wire set and a wire separator loom so a whole-engine replacement is possible in one job.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh voltage output:\u003c\/strong\u003e UF271 coils are designed to provide an instantaneous voltage rise to more than 45,000 volts, which helps reduce idle speed issues and engine jitter caused by worn coils.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterials and construction:\u003c\/strong\u003e Square ignition coils use pure copper windings and epoxy for thermal stability, intended to improve throttle response and gas mileage over degraded factory coils.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpark wire design:\u003c\/strong\u003e Spark plug wires use fiberglass braid and a carbon impregnated fiberglass core to deliver strength and consistent conductivity for stable ignition.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment clarity:\u003c\/strong\u003e The pack lists multiple replacement part numbers (12556893, 12558693, 12570553, 3859078 and others) to help buyers confirm direct fit before purchase.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty support:\u003c\/strong\u003e A 12 month warranty offers free replacement or refund if any item is defective, giving extra assurance for a full set purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe kit is aimed at owners of compatible Cadillac, Chevrolet and GMC trucks and SUVs who need to replace all eight coils and wires at once, or anyone repairing a misfire that could be caused by multiple failing coils. It is useful for DIY mechanics who prefer a single-package solution and for fleet managers who want consistent parts across multiple vehicles.\u003c\/p\u003e\n\u003cp\u003eShoppers who require OE branded parts with long proven lifespans, or who need a single coil replacement rather than a full set, should look elsewhere; some users reported variable longevity and occasional early failures, so those seeking an extended OEM-backed lifetime may prefer dealer parts.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFull eight-coil and eight-wire kit simplifies installation and eliminates mismatched parts.\u003c\/li\u003e\n\u003cli\u003eHigh voltage UF271 design aims to restore idle stability and reduce misfire for better engine performance.\u003c\/li\u003e\n\u003cli\u003eMaterials like copper windings and epoxy help with improved throttle response and fuel economy.\u003c\/li\u003e\n\u003cli\u003eComes with a 12 month warranty to replace defective items at no extra cost.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBuild quality is mixed in real-world reports, with some buyers experiencing premature failures within months.\u003c\/li\u003e\n\u003cli\u003eWire length and fit may require verification for some applications, so careful fitment checking is necessary before purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eB4B BANG 4 BUCK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContents\u003c\/td\u003e\n\u003ctd\u003e8 D581 UF271 ignition coils, 8 spark plug wires, wire separator loom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReplacement part numbers\u003c\/td\u003e\n\u003ctd\u003e12556893, 12558693, 12570553, 3859078, 38590782, 392889925, D581, UF271\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWire replacements\u003c\/td\u003e\n\u003ctd\u003eDirect replacement for 748UU, 12622553, 12656210\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e12 months free replacement or refund for defective items\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoil construction\u003c\/td\u003e\n\u003ctd\u003ePure copper coils with epoxy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe BANG4BUCK full 8-coil and wire kit is a practical, cost-effective option for replacing all ignition components at once and can noticeably improve idle smoothness and throttle response. It offers good value for drivers who need a bulk replacement and want immediate gains in engine performance, but buyers should confirm fitment and be aware that real-world longevity reports vary, so keep the 12 month warranty in mind.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this kit fit my vehicle?\u003c\/strong\u003e\u003cbr\u003eCheck the listed replacement part numbers against your vehicle coils before buying to ensure direct fitment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the kit include a warranty?\u003c\/strong\u003e\u003cbr\u003eYes, the kit includes a 12 month warranty for free replacement or refund on defective items.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre the spark plug wires OE quality?\u003c\/strong\u003e\u003cbr\u003eWires use fiberglass braid and carbon impregnated fiberglass core for improved strength and conductivity but may differ from original factory branded wires.\u003c\/p\u003e","brand":"B4B BANG 4 BUCK","offers":[{"title":"Default Title","offer_id":48195348005083,"sku":"B0837N17LJ","price":132.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71hd1dep-ZL._AC_SL1280.jpg?v=1770354314","url":"https:\/\/gearmusthave.com\/products\/bang4buck-8pcs-ignition-coils-pack-uf271-8-spark-plug-wires-whole","provider":"GearMustHave","version":"1.0","type":"link"}