Ignition Coil and Iridium Spark Plugs for Mercedes Benz GLC-Class (2016-2019) 2.0L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2016-2019 Mercedes Benz GLC-Class

What it Does: Restores factory secondary ignition performance and resolves high-boost misfires by replacing degraded coil-on-plug packs and worn spark plugs across all four cylinders.

The Stock GLC-Class Thermal Degradation Issue

The turbocharged direct-injected M274 engine generates extreme cylinder head temperatures and high combustion pressures. Over time, OEM ignition coils suffer from dielectric breakdown, internal copper winding fatigue, and micro-cracking along the epoxy insulation. Coupled with standard plug gap erosion, this causes spark blow-out under load, rough idle, poor cold-start combustion, and intermittent P0300-series misfire trouble codes.

The Engineering Solution

This complete 4-cylinder tune-up kit features high-grade copper primary and secondary windings encased in heat-resistant, high-dielectric epoxy housings for sustained spark energy. Matched with fine-wire iridium-tipped spark plugs, the assembly resists electrode quenching, lowers ignition voltage requirements, and maintains consistent flame kernel propagation under peak boost without carbon tracking or thermal fatigue.

Technical Specifications

Compatibility

• 2016 Mercedes Benz GLC300 2.0L L4 (X253)
• 2017 Mercedes Benz GLC300 2.0L L4 (X253)
• 2018 Mercedes Benz GLC300 2.0L L4 (X253)
• 2019 Mercedes Benz GLC300 2.0L L4 (X253)
• 2017-2019 Mercedes Benz GLC300 4Matic 2.0L L4 (X253 / C253)

The Mercedes Benz Precision Standard

Calibrated specifically for European direct-injection requirements, these components maintain precise dwell times and factory ECU signaling to eliminate check-engine lights while delivering smooth power transfer.