{"product_id":"ignition-coil-spark-plug-for-buick-allure-lacrosse-2008-2009-rainier-2005-2007-5-3l-v8-round-style","title":"Ignition Coil \u0026 Spark Plug for Buick Allure LaCrosse (2008-2009) Rainier (2005-2007) 5.3L V8 (Round Style)","description":"\u003ch2\u003eHigh-Energy Ignition Coil \u0026amp; Spark Plug Set for 2008-2009 Buick Allure, LaCrosse\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eDirect plug-and-play ignition upgrade:\u003c\/strong\u003e Replaces the aging stock coils, plugs, and wires on your 5.3L V8 to eliminate misfires and deliver a stronger, more consistent spark.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock W-Body Ignition Shortcoming\u003c\/h3\u003e\n\u003cp\u003eOver time, the factory ignition coils on the transverse-mounted 5.3L LS4 V8 suffer from severe heat soak. The confined engine bay of the W-body chassis traps thermal energy, causing the OEM coil's internal epoxy to degrade. This thermal breakdown increases primary resistance, leading to weakened spark output, rough idling, hesitation under heavy engine load, and eventual coil failure. Furthermore, the factory plug wires gradually lose their dielectric insulation properties, causing parasitic voltage leaks and contributing to annoying misfire codes that rob the engine of power.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis complete ignition overhaul kit replaces the restrictive and degradation-prone OEM components with high-performance alternatives. The UF414 round-style ignition coils are manufactured with premium-grade copper windings and high-temperature epoxy internals, producing an impressive 32,000 volts—a 20% increase in discharge energy over standard factory specifications. This stronger spark ensures a more complete combustion cycle, optimizing fuel efficiency and throttle response. Paired with exact-fit spark plugs and heavy-duty silicone-insulated plug wires, this kit restores reliable ignition timing, prevents voltage bleed, and is built to stand up to the extreme ambient temperatures of the LS4 engine bay.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px;\"\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e2008-2009 Buick Allure, LaCrosse\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eEngine \/ Chassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eLS4 5.3L V8 \/ W-Body\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eStock Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e300 hp \/ 323 lb-ft (Approx)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eUF414, D514A, 748UU, 41962\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eBuick Allure \/ LaCrosse 5.3L V8 (2008-2009)\u003c\/li\u003e\n  \u003cli\u003eBuick Rainier (2005-2007)\u003c\/li\u003e\n  \u003cli\u003eCadillac Escalade\u003c\/li\u003e\n  \u003cli\u003eChevrolet Avalanche\u003c\/li\u003e\n  \u003cli\u003eChevrolet Silverado\u003c\/li\u003e\n  \u003cli\u003eChevrolet Suburban\u003c\/li\u003e\n  \u003cli\u003eChevrolet Express\u003c\/li\u003e\n  \u003cli\u003eChevrolet Tahoe\u003c\/li\u003e\n  \u003cli\u003eChevrolet Trailblazer\u003c\/li\u003e\n  \u003cli\u003eGMC Savana\u003c\/li\u003e\n  \u003cli\u003eGMC Yukon\u003c\/li\u003e\n  \u003cli\u003eHummer H3\u003c\/li\u003e\n  \u003cli\u003e\u003cem\u003eNote: Only applicable to round style coils (UF414 \/ D514A). Not suitable for square body coils (UF413 \/ D510C). Please verify original coil shape before ordering.\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Buick Performance Standard\u003c\/h3\u003e\n\u003cp\u003eWhether you're cruising the highway or demanding maximum passing power from the 5.3L LS4, reliable ignition is non-negotiable. This kit ensures your W-body Buick delivers the smooth, torquey performance it was engineered for, eliminating frustrating misfires and providing a consistent, powerful spark under all load conditions.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":49710905065720,"sku":"DS-EKAMPDLB5","price":179.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-spark-plug-for-buick-allure-lacrosse-2008-2009-rainier-2005-2007-5-3l-v8-round-style-1.jpg?v=1782795847","url":"https:\/\/performancechiptuning.com\/products\/ignition-coil-spark-plug-for-buick-allure-lacrosse-2008-2009-rainier-2005-2007-5-3l-v8-round-style","provider":"Performance Chip Tuning","version":"1.0","type":"link"}