Ignition Coil & Iridium Spark Plugs for Mercedes-Benz C250 (2010-2012) 2.5L V6

High-Output Ignition Coil & Iridium Spark Plugs for 2010-2012 Mercedes Benz C-Class

Restores proper combustion and eliminates misfire codes: Replaces degraded factory W204 ignition components with high-voltage copper-wound coils and precisely gapped iridium-tipped plugs for optimal M272 engine efficiency.

The Stock C-Class W204 Ignition Weakness

The factory M272 2.5L V6 frequently suffers from thermal degradation within the ignition coil housing. Constant heat cycling from the engine bay breaks down the internal epoxy potting and primary winding insulation over time. This insulation breakdown leads to primary voltage leaks, which manifest as rough idling, throttle hesitation under load, and stubborn P0300 to P0306 cylinder misfire trouble codes. Furthermore, as the original equipment platinum spark plugs wear down, their required firing voltage spikes dramatically. This increased electrical resistance places severe strain on already weakened factory ignition coils, degrading fuel economy and accelerating complete coil pack failure.

The Engineering Solution

To combat W204 ignition failure, these replacement direct-fire coils utilize upgraded internal copper wire windings encased in high-grade thermal epoxy potting to resist engine bay heat soak and voltage blow-by. By delivering a more consistent, higher-energy spark, these coils eliminate load-based hesitation. The kit pairs these reinforced coils with advanced iridium spark plugs. Iridium's extreme melting point allows for a much finer wire center electrode, which drastically reduces the required firing voltage and yields a more concentrated, highly efficient spark front. This combined upgrade stabilizes idle vacuum, optimizes combustion efficiency, and completely restores factory torque output without triggering the Mercedes engine management unit's sensitive Check Engine Light parameters.

Technical Specifications

Compatibility

• 2010 Mercedes-Benz C250 2.5L V6
• 2011 Mercedes-Benz C250 2.5L V6
• 2012 Mercedes-Benz C250 2.5L V6

The Mercedes Benz Precision Standard

European engine management systems demand exacting electrical resistance values. This ignition kit maintains strict OE+ parameters to ensure precise spark timing, smooth power delivery, and absolute zero CEL interference on the W204 platform.