Ignition Coil and Iridium Spark Plugs for Buick LaCrosse (2010-2016) 2.4L

OEM-Grade Ignition Coil and Iridium Spark Plug Kit for 2010-2016 Buick LaCrosse

Direct-fit replacement ignition tune-up kit: Restores factory secondary voltage output, eliminates cylinder misfires, and stabilizes engine idle across all four cylinders on the 2.4L Ecotec engine.

The Stock LaCrosse Ignition Breakdown and Heat Fatigue

Continuous thermal cycling within the GM direct-injection engine bay deteriorates factory coil-on-plug epoxy insulation and breaks down internal copper windings over time. This thermal fatigue creates internal resistance surges, leading to weak spark energy, unburned fuel, reduced throttle response, carbon accumulation on piston crowns, and persistent P0300 through P0304 misfire diagnostic trouble codes.

The Engineering Solution

This ignition kit utilizes high-conductivity oxygen-free copper internal windings housed inside high-dielectric epoxy casings to isolate voltage leaks and prevent high-temperature arcing. Engineered with exact OE blade terminals and molded boots, the coils pair seamlessly with laser-welded iridium spark plugs. The fine-wire iridium center electrodes lower required ignition voltage, reducing overall stress on the primary ignition circuit while generating a concentrated, stable flame kernel for complete combustion.

Technical Specifications

Compatibility

• 2010-2016 Buick LaCrosse 2.4L L4 Gas / Mild Hybrid (Base, Convenience, Leather, Premium, eAssist)
• Interchange Part Numbers: UF491, 12578224, 12638824, 12578244, C1552, D517A

The Buick Standard of Precision

Engineered to match factory ECM dwell time calibrations, this kit ensures smooth power delivery, immediate cold-start ignition, and strict compliance against CEL triggers for reliable daily driving.