{"product_id":"ignition-coil-and-iridium-spark-plugs-for-cadillac-cts-2004-2010-3-6l","title":"Ignition Coil and Iridium Spark Plugs for Cadillac CTS (2004-2010) 3.6L","description":"\u003ch2\u003eDirect-Fit Ignition Coil and Iridium Spark Plug Kit for 2004-2010 Cadillac CTS\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Replaces failing factory coil packs and worn plugs with high-dielectric assemblies and fine-wire iridium plugs to restore combustion efficiency and eliminate cylinder misfires.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock CTS Ignition Coil Thermal Fatigue and Breakdown\u003c\/h3\u003e\n\u003cp\u003eUnderhood thermal cycling in the Sigma engine bay subjects factory coil packs to severe heat soak, degrading internal epoxy potting and stressing primary copper windings over time. This breakdown causes dielectric punch-through, internal arc-over, and secondary voltage drop under load. As OEM spark plug gaps widen from standard electrode erosion, the ignition system requires higher secondary voltage to bridge the gap, accelerating coil failure and resulting in P0300-P0306 misfire codes, rough idle, and unburned hydrocarbons damaging downstream catalytic converters.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis complete 6-cylinder ignition service kit features coil-on-plug units wound with high-grade internal copper wiring and insulated by heat-resistant thermoset resin to prevent short-circuiting under peak thermal stress. Matched with direct-fit OEM-spec blade terminals and high-temp silicone boots, these coils ensure stable primary current transfer. The included fine-wire iridium spark plugs lower required firing voltage, providing superior anti-fouling characteristics, reduced quench effect, and consistent flame front propagation across the entire RPM range.\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;\"\u003e2004-2010 Cadillac CTS\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;\"\u003e255-304 hp \/ 252-273 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\u003e2004-2007 Cadillac CTS Base Sedan 3.6L V6 (LY7)\u003c\/li\u003e\n  \u003cli\u003e2008-2010 Cadillac CTS Base \/ Luxury \/ Premium Sedan 3.6L V6 (LY7 \/ LLT)\u003c\/li\u003e\n  \u003cli\u003e2010 Cadillac CTS Sport Wagon 3.6L V6 (LLT)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Cadillac Luxury Performance Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to meet OE electrical tolerances, this ignition package delivers smooth idle characteristics, immediate throttle response, and no-CEL reliability for your luxury platform.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50448294576376,"sku":"DS-E79X42A2T","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-cts-2004-2010-3-6l-1.jpg?v=1788638903","url":"https:\/\/performancechiptuning.com\/es\/products\/ignition-coil-and-iridium-spark-plugs-for-cadillac-cts-2004-2010-3-6l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}