Ignition Coil & Iridium Spark Plugs for Cadillac ATS CT4 (2013-2024) 3.6L V6

Direct Replacement Ignition Coils & Iridium Spark Plugs for 2013-2024 Cadillac ATS, CT4 (LFX/LGX/LF4 / Alpha Platform)

Replaces degraded factory ignition coils and fouled spark plugs to restore optimal combustion, eliminate misfires, and stabilize idle on the GM 3.6L V6.

The Stock GM 3.6L Ignition Weakness

Factory 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.

The Engineering Solution

This 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.

Technical Specifications

Compatibility

• 2013-2019 Cadillac ATS (3.6L V6)
• 2020-2024 Cadillac CT4 (3.6L V6 / CT4-V Blackwing)

The Cadillac Precision Standard

Engineered 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.