Ignition Coil and Iridium Spark Plugs for Mercedes Benz E-Class (2012-2016) 3.5L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2012-2016 Mercedes Benz E-Class

What it Does: Restores factory ignition energy, stabilizes engine idle, and eliminates secondary ignition misfires across all six cylinders on direct-injected 3.5L M276 engines.

The Stock E-Class Thermal Fatigue Weakness

Under-hood thermal cycling in the W212 engine bay degrades factory ignition coil epoxy encapsulation and silicone boots over time. This breakdown causes dielectric breakdown, internal arc grounding, and increased secondary resistance. Coupled with spark plug electrode erosion from high cylinder pressures, the resulting spark loss leads to rough cold starts, hesitations, reduced fuel economy, and diagnostic fault codes P0300 through P0306.

The Engineering Solution

This full tune-up ignition kit includes six direct-fit coil-on-plug units wound with premium high-conductivity internal copper wiring to ensure optimal magnetic saturation and high-voltage discharge. Paired with six fine-wire iridium-tipped spark plugs, this system lowers required breakdown voltage, resists electrode thermal wear, and ensures clean, complete combustion under demanding high-compression direct-injection cycles.

Technical Specifications

Compatibility

• 2012-2016 Mercedes Benz E350 3.5L V6 Gas (W212 Sedan)
• 2012-2016 Mercedes Benz E350 4Matic 3.5L V6 Gas (W212 Sedan / S212 Wagon)
• 2012-2016 Mercedes Benz E350 3.5L V6 Gas (C207 Coupe / A207 Cabriolet)

The Mercedes Benz Precision Standard

Engineered to communicate seamlessly with factory Bosch MED17 ECU calibrations, ensuring stable dwell times, no check engine lights, and full protection for sensitive downstream catalytic converters.