{"product_id":"ignition-coil-and-iridium-spark-plugs-for-cadillac-sts-2005-2010-3-6l","title":"Ignition Coil and Iridium Spark Plugs for Cadillac STS (2005-2010) 3.6L","description":"\u003ch2\u003eDirect-Fit Ignition Coil and Iridium Spark Plug Kit for 2005-2010 Cadillac STS\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Restores factory secondary ignition output and optimal flame kernel propagation across all six cylinders to eliminate misfires, rough idle, and unburned fuel loss.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock STS Ignition Coil Degradation\u003c\/h3\u003e\n\u003cp\u003eThe 3.6L High Feature V6 generates significant thermal cycling beneath the intake plenum, accelerating dielectric breakdown of the factory epoxy insulation and internal copper windings within the OEM coil-on-plug assemblies. Over time, prolonged exposure to engine heat and high secondary voltage leads to internal shorting, micro-arcing across the boots, and widened spark plug gaps from electrode erosion. This degradation causes P0300 through P0306 cylinder misfire codes, hesitations under load, and reduced catalytic converter service life.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive service kit pairs six high-dielectric coil-on-plug units with fine-wire iridium spark plugs designed for thermal resilience. The ignition coils feature reinforced primary and secondary copper windings potted in high-grade dielectric resin to prevent internal flashover under high dwell times. Matched with corrosion-resistant blade terminals and high-density silicone boots, they deliver consistent spark energy to the ultra-fine iridium center electrodes, maintaining precise gap spacing, lower required firing voltages, and complete air-fuel combustion under heavy engine load.\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;\"\u003e2005-2010 Cadillac STS\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;\"\u003e3.6L High Feature V6 (LY7 \/ LLT) \/ GM Sigma Platform\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;\"\u003e255-302 hp \/ 252-272 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;\"\u003eUF375, 12629037, 12613057, 12583514, C-747, D501C, D510A, E405, 5C1551\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2005 Cadillac STS 3.6L V6 (LY7)\u003c\/li\u003e\n  \u003cli\u003e2006 Cadillac STS 3.6L V6 (LY7)\u003c\/li\u003e\n  \u003cli\u003e2007 Cadillac STS 3.6L V6 (LY7)\u003c\/li\u003e\n  \u003cli\u003e2008 Cadillac STS 3.6L V6 (LLT)\u003c\/li\u003e\n  \u003cli\u003e2009 Cadillac STS 3.6L V6 (LLT)\u003c\/li\u003e\n  \u003cli\u003e2010 Cadillac STS 3.6L V6 (LLT)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Cadillac Precision Benchmark\u003c\/h3\u003e\n\u003cp\u003eEngineered to meet direct-injection and port-injection factory dwell profiles, this complete ignition refresh maintains factory calibration integrity, restores smooth idle stability, and prevents fault codes without requiring PCM retuning.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50448294641912,"sku":"DS-EHDWTZL39","price":109.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-and-iridium-spark-plugs-for-cadillac-sts-2005-2010-3-6l-1.jpg?v=1788638933","url":"https:\/\/performancechiptuning.com\/products\/ignition-coil-and-iridium-spark-plugs-for-cadillac-sts-2005-2010-3-6l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}