{"product_id":"sparkwhiz-uf271-square-ignition-coils-d581-kit-with-748ee-wires-spark-plugs-12558693-for-gmc-sierra-silverado-tahoe-avalanche-suburban","title":"SPARKWHIZ UF271 Square Ignition Coils \u0026 D581 Kit with 748EE Wires \u0026 Spark Plugs — 12558693 for GMC Sierra, Silverado, Tahoe, Avalanche, Suburban","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eMeet SPARKWHIZ UF271 Square Ignition Coils, a comprehensive kit designed to refresh GM V8 ignition systems. This package combines UF271 square coils with the D581 family, a set of 8mm spark plug wires, and eight spark plugs. Engineered for consistency across daily driving and occasional heavier use, the kit aims to deliver reliable spark delivery for engines commonly found in Silverado, Suburban, Tahoe, Avalanche, and more.\u003c\/p\u003e\n\u003cp\u003eWhether you’re maintaining a trusty daily driver or planning a longer road trip, this kit presents a practical upgrade path that emphasizes practical reliability and smoother starts. While actual results can vary, refreshed ignition components can help keep your engine firing on all cylinders when you need it most.\u003c\/p\u003e\n\n\u003ch3\u003eWhat’s Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eUF271 square ignition coils (D581) for square-coil applications\u003c\/li\u003e\n  \u003cli\u003eEight 8mm spark plug wires for consistent resistance and spark paths\u003c\/li\u003e\n  \u003cli\u003eEight spark plugs to complete a full ignition refresh\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDurable copper windings wrapped in a rugged polyester jacket to withstand heat and road conditions\u003c\/li\u003e\n  \u003cli\u003e8mm wires designed to maintain steady, reliable ignition performance across environments\u003c\/li\u003e\n  \u003cli\u003eComprehensive kit structure that supports a full ignition refresh, reducing mismatches between components\u003c\/li\u003e\n  \u003cli\u003eGerman-inspired coil design elements paired with practical automotive plastics for long service life\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFitment and Vehicle Range\u003c\/h3\u003e\n\u003cp\u003eThis UF271\/D581 square coil set is compatible with a broad range of GM trucks and SUVs, including Chevrolet Avalanche (2002–2006), Silverado (1999–2007), Tahoe (2000–2006), Suburban (2000–2006), Express (2003–2006), Sierra 1500 (1999–2006), Monte Carlo, and related models. Some variants may list additional equipment or different coil shapes; always verify coil shape in your engine bay before purchase. This listing specifically covers SQUARE UF271\/D581 coils.\u003c\/p\u003e\n\n\u003ch3\u003eImportant Coil Shape Note\u003c\/h3\u003e\n\u003cp\u003ePLEASE NOTE: the same vehicle type may use different coil shapes, SQUARE (UF271\/D581) or ROUND (UF262\/D585). To avoid installation problems, check your engine compartment and confirm the coil shape. This ASIN is for SQUARE UF271\/D581 coils.\u003c\/p\u003e\n\n\u003ch3\u003eWhat This Means for Your Drive\u003c\/h3\u003e\n\u003cp\u003eAs ignition components come closer to spec, drivers may experience more predictable starts, steadier idle, and smoother throttle response. Individual results vary, but a refreshed ignition kit can support reliable operation during daily commutes and longer trips alike.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Choose SPARKWHIZ\u003c\/h3\u003e\n\u003cp\u003eSPARKWHIZ focuses on practical, durable ignition solutions that fit a wide range of GM-powered vehicles. The UF271 kit blends robust coil technology with standard-wrapped, heat-resistant components to deliver a balanced upgrade for drivers seeking dependable ignition performance without surprises.\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: Which vehicles are compatible with the SPARKWHIZ UF271 D581 kit?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Compatible with many GM trucks and SUVs, including Silverado, Suburban, Tahoe, Avalanche, and Sierra models from the late 1990s to mid-2000s; check coil shape in your engine bay.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What does the SPARKWHIZ UF271 kit include?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: UF271 square ignition coils, D581 parts, eight 8mm spark plug wires, and eight spark plugs.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"SPARKWHIZ","offers":[{"title":"Default Title","offer_id":42395736834133,"sku":"B0DSZLR6L8","price":169.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3270\/4597\/files\/sparkwhiz-uf271-square-ignition-coil-closeup.jpg?v=1775947571","url":"https:\/\/plentytorque.co.uk\/products\/sparkwhiz-uf271-square-ignition-coils-d581-kit-with-748ee-wires-spark-plugs-12558693-for-gmc-sierra-silverado-tahoe-avalanche-suburban","provider":"PlentyTorque","version":"1.0","type":"link"}