Ignition Coil & Iridium Spark Plugs for Mercedes-Benz SLK350 (2005-2013) 3.5L V6

High-Output Ignition Coil & Iridium Spark Plug Kit for 2005-2013 Mercedes Benz SLK-Class

This comprehensive ignition overhaul kit directly replaces degrading factory coils and plugs to restore lost voltage, eliminate misfires, and improve combustion efficiency in the 3.5L V6.

The Stock SLK-Class Ignition Degradation

The factory ignition coils on the M272 and M276 engines are subjected to extreme thermal cycling due to their placement directly atop the cylinder heads. Over time, this heat soak breaks down the internal epoxy resin and primary/secondary windings. This degradation increases electrical resistance, leading to weak spark energy, voltage leaks, and high-RPM misfires. When paired with worn standard spark plugs, the resulting incomplete combustion not only robs the engine of its factory horsepower but also places excessive strain on the catalytic converters and triggers persistent P0300-series check engine codes.

The Engineering Solution

This upgraded ignition kit utilizes premium internal copper wiring and high-dielectric epoxy to withstand extreme engine bay temperatures without voltage breakdown. By replacing the failure-prone OEM coils with these OE+ specification units, the system maintains consistent primary voltage and delivers maximum spark energy to the combustion chamber under high-load conditions. The included Iridium spark plugs feature an ultra-fine wire center electrode that requires less voltage to fire while offering superior resistance to thermal wear. This optimized spark event ensures complete fuel atomization, resolving rough idle issues, preventing spark blowout at higher RPMs, and offering up to a 15% increase in ignition performance and energy transfer.

Technical Specifications

Compatibility

• 2005 Mercedes-Benz SLK350 3.5L V6
• 2006 Mercedes-Benz SLK350 3.5L V6
• 2007 Mercedes-Benz SLK350 3.5L V6
• 2008 Mercedes-Benz SLK350 3.5L V6
• 2009 Mercedes-Benz SLK350 3.5L V6
• 2010 Mercedes-Benz SLK350 3.5L V6
• 2011 Mercedes-Benz SLK350 3.5L V6
• 2012 Mercedes-Benz SLK350 3.5L V6
• 2013 Mercedes-Benz SLK350 3.5L V6

The Mercedes Benz Precision Standard

Engineered to exact factory parameters, this ignition package ensures a precise fit within the tight confines of the SLK-Class cylinder banks, restoring smooth power delivery and guaranteeing a CEL-free operation.