{"product_id":"ignition-coil-iridium-spark-plugs-for-cadillac-ats-ct4-2013-2024-3-6l-v6","title":"Ignition Coil \u0026 Iridium Spark Plugs for Cadillac ATS CT4 (2013-2024) 3.6L V6","description":"\u003ch2\u003eDirect Replacement Ignition Coils \u0026amp; Iridium Spark Plugs for 2013-2024 Cadillac ATS, CT4 (LFX\/LGX\/LF4 \/ Alpha Platform)\u003c\/h2\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eReplaces degraded factory ignition coils and fouled spark plugs to restore optimal combustion, eliminate misfires, and stabilize idle on the GM 3.6L V6.\u003c\/strong\u003e\u003c\/p\u003e\n  \n  \u003ch3\u003eThe Stock GM 3.6L Ignition Weakness\u003c\/h3\u003e\n  \u003cp\u003eFactory ignition coils on the 3.6L V6 engines are notorious for succumbing to thermal stress and heat soak due to their tight packaging and proximity to the exhaust manifolds and cylinder heads. Over time, constant thermal cycling breaks down the internal dielectric epoxy resin and primary\/secondary copper windings. This leads to increased electrical resistance, weak spark output, and eventually, primary or secondary circuit failure. Combined with standard spark plug electrode erosion over tens of thousands of miles, the result is a cascade of drivability issues: rough idling, hesitation under heavy throttle, reduced fuel efficiency, and dreaded P0300-series misfire codes that trigger a check engine light and compromise catalyst health.\u003c\/p\u003e\n  \n  \u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n  \u003cp\u003eThis comprehensive ignition overhaul kit directly addresses these factory shortcomings by pairing high-output ignition coils with premium Iridium-tipped spark plugs. The coils are precision-wound with heavily insulated, high-grade copper wire to maximize voltage transfer and are completely encased in a high-temperature epoxy to resist thermal degradation and electrical arcing. The included spark plugs feature an ultra-fine Iridium center electrode, which significantly lowers the required firing voltage while offering exceptional durability against spark erosion. Together, they ensure a hotter, more consistent spark across all RPM ranges, fully burning the air\/fuel mixture for maximum horsepower delivery, restored fuel economy, and zero hesitation under 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;\"\u003e2013-2024 Cadillac ATS, CT4\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;\"\u003eLFX, LGX, LF4 3.6L V6 \/ Alpha 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;\"\u003e321-472 hp \/ 275-445 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;\"\u003e3340078J00, 3340078J01, 3340078J02, 3340078J03, CLS1226, V40-70-0092, 921-2109, 2505-301881, 673-7300, C-761, IC649\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n \n  \u003ch3\u003eCompatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e2013-2019 Cadillac ATS (3.6L V6)\u003c\/li\u003e\n    \u003cli\u003e2020-2024 Cadillac CT4 (3.6L V6 \/ CT4-V Blackwing)\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eThe Cadillac Precision Standard\u003c\/h3\u003e\n  \u003cp\u003eEngineered to meet the exacting standards of GM's Alpha platform, this ignition kit delivers the precise spark timing and voltage required to keep your high-output luxury sports sedan running perfectly smooth with zero CELs.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":48303132246264,"sku":"DS-EJP3U0DYD","price":149.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-iridium-spark-plugs-for-cadillac-ats-ct4-2013-2024-3-6l-v6-1.jpg?v=1777576831","url":"https:\/\/performancechiptuning.com\/products\/ignition-coil-iridium-spark-plugs-for-cadillac-ats-ct4-2013-2024-3-6l-v6","provider":"Performance Chip Tuning","version":"1.0","type":"link"}