{"product_id":"ignition-coil-spark-plug-for-chevy-trailblazer-ext-2005-2009-v8-round-style","title":"Ignition Coil \u0026 Spark Plug for Chevy Trailblazer EXT (2005-2009) V8 (Round Style)","description":"\u003ch2\u003eHigh-Energy Ignition Coil \u0026amp; Spark Plug Kit for 2005-2009 Chevrolet Trailblazer\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eReplaces aging factory coils, plugs, and wires to eliminate misfires and restore optimal ignition timing on Gen III\/IV LS-based V8 engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Trailblazer Ignition Degradation\u003c\/h3\u003e\n\u003cp\u003eOver thousands of severe heat cycles, the factory GM ignition coils suffer from internal epoxy breakdown and primary winding degradation. Prolonged heat soak within the tight GMT360\/GMT370 engine bay leads to significant voltage drop, which translates into intermittent misfires, rough idling, and noticeably reduced fuel economy under load. Furthermore, aging OEM plug wires experience increased electrical resistance as their internal carbon cores break down, severely weakening the spark energy before it even reaches the combustion chamber.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive ignition overhaul utilizes upgraded round-style (UF414\/D514A) coils engineered with high-grade internal copper windings and premium high-temperature epoxy to actively resist thermal breakdown. Producing 32,000 maximum volts and a 61:1 turns ratio, these coils deliver 20% more discharge energy than standard OEM units, guaranteeing a robust and consistent spark. Paired with low-resistance silicone-jacketed 748UU plug wires and pre-calibrated 41962 spark plugs, the system ensures maximum voltage transfer and complete cylinder combustion. This cures hesitation, restores lost low-end torque, and stabilizes idle vacuum. Always verify your engine utilizes the round-style coil bodies prior to installation, and apply dielectric grease to the boots to prevent rubber adhesion.\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;\"\u003e2005-2009 Chevrolet Trailblazer V8\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;\"\u003e5.3L LH6 \u0026amp; 6.0L LS2 V8 \/ GMT370 (EXT) \u0026amp; GMT360\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;\"\u003e300-390 hp \/ 330-400 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, 41962, 748UU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\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\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote: Compatible with specific V8 models requiring round-style coils. Replaces OE #s: C1512, D514A, UF414, 5C1555, E894, 52-1820, IC534, 12573190, 12570616, 12611424, 1788407.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eThe Chevrolet Heavy-Duty Caliber\u003c\/h3\u003e\n\u003cp\u003eWhen hauling loads or navigating harsh conditions, reliable ignition is critical. This high-output coil and plug set ensures your GM truck or SUV maintains peak thermal efficiency and relentless pulling power under heavy loads without triggering a check engine light.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":49711049507064,"sku":"DS-EO1SMO0HG","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-chevy-trailblazer-ext-2005-2009-v8-round-style-1.jpg?v=1782796431","url":"https:\/\/performancechiptuning.com\/es\/products\/ignition-coil-spark-plug-for-chevy-trailblazer-ext-2005-2009-v8-round-style","provider":"Performance Chip Tuning","version":"1.0","type":"link"}