Ignition Coil & Iridium Spark Plugs for Mercedes-Benz C300 (2008-2012) 3.0L V6

High-Performance Ignition Coil & Iridium Spark Plug Kit for 2008-2012 Mercedes Benz C-Class

What it Does: This direct replacement ignition coil and iridium spark plug package restores proper spark delivery and combustion efficiency to the 3.0L M272 V6 engine.

The Stock C-Class Ignition Weakness

The OEM ignition coils on the W204 chassis are notorious for premature thermal degradation due to prolonged heat cycling in the M272 engine bay. Over time, the internal epoxy resin and factory copper windings break down, increasing electrical resistance. This degradation manifests as a weak spark, intermittent misfires under heavy engine load, rough idling, and reduced throttle response. As the primary coils fail, the factory spark plugs are forced to operate outside their optimal heat range, leading to rapid electrode wear, carbon fouling, and unburned fuel entering the exhaust stream, which can ultimately damage the catalytic converters.

The Engineering Solution

This comprehensive tune-up kit addresses the inherent design flaws of the factory ignition system by utilizing upgraded internal components. The replacement coils feature heavy-duty copper wire windings with superior dielectric insulation to resist high-voltage breakdown and mitigate heat soak in the tight V6 cylinder banks. Paired with laser-welded Iridium spark plugs, this system provides a concentrated, stable spark kernel that requires less primary voltage to jump the gap. The Iridium alloy construction offers extreme resistance to high-temperature corrosion and spark erosion, ensuring consistent timing, complete fuel atomization, and a smoother idle while preventing the dreaded blinking Check Engine Light (CEL).

Technical Specifications

Compatibility

• 2008 Mercedes-Benz C300 3.0L V6
• 2009 Mercedes-Benz C300 3.0L V6
• 2010 Mercedes-Benz C300 3.0L V6
• 2011 Mercedes-Benz C300 3.0L V6
• 2012 Mercedes-Benz C300 3.0L V6

The Mercedes Benz Precision Standard

Engineered to meet or exceed strict OE standards, this ignition kit ensures your W204 maintains the precise timing and smooth power delivery expected of a German luxury sedan, restoring reliable operation and keeping you free of misfire-related CELs.