Ignition Coil and Iridium Spark Plugs for Buick Regal TourX (2018-2020) 2.0L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2018-2020 Buick Regal TourX

What it Does: Restores factory ignition energy and combustion timing across all four cylinders to eliminate misfires, rough idling, and high-boost spark blowout.

The Stock Regal TourX Ignition Breakdown

The direct-injected 2.0L LTG turbo engine creates severe thermal loading and high cylinder pressures inside the compact E2XX engine bay. Over time, OEM coil assemblies suffer dielectric breakdown from extreme thermal cycling, causing micro-fractures in the internal epoxy and weakening primary/secondary copper windings. Simultaneously, factory spark plug electrodes erode, widening gaps and increasing secondary voltage demand. This degradation leads to unburnt fuel cycles, hesitation under load, reduced fuel efficiency, and P0300-P0304 misfire trouble codes.

The Engineering Solution

This ignition kit pairs four high-output coil-on-plug units with matched fine-wire iridium spark plugs for precise ignition synchronization. Engineered with high-conductivity copper windings, reinforced silicone boots, and heat-stabilized thermoplastic housings, each coil resists high-temperature degradation and voltage leakage. The ultra-fine iridium center electrodes ensure minimal firing voltage requirements, enhanced flame kernel propagation, and stable spark integrity under peak turbo boost pressures. Direct-fit blade terminals allow immediate plug-and-play installation.

Technical Specifications

Compatibility

• 2018 Buick Regal TourX (Base, Preferred, Essence) 2.0L L4 Turbo Gas
• 2019 Buick Regal TourX (Base, Preferred, Essence) 2.0L L4 Turbo Gas
• 2020 Buick Regal TourX (Base, Preferred, Essence) 2.0L L4 Turbo Gas

The Buick Precision Benchmark

Engineered to meet the exact diagnostic parameters of GM's direct-injected Ecotec platform, this kit maintains factory ECU spark mapping, ensures zero check-engine lights, and restores smooth throttle response across all driving conditions.