Ignition Coil & Iridium Spark Plugs for Mercedes-Benz CLK350 (2006-2009) 3.5L V6

High-Energy Ignition Coil & Iridium Spark Plugs for 2006-2009 Mercedes Benz CLK-Class

Provides a direct-replacement ignition upgrade to eliminate misfires and restore combustion efficiency. This matched set of six ignition coils and iridium spark plugs is engineered specifically for the M272 V6 engine, delivering a hotter, more consistent spark across the entire RPM range.

The Stock CLK-Class Ignition Shortcomings

As the W209 chassis ages, the factory ignition coils on the 3.5L M272 engine become highly susceptible to thermal degradation. Prolonged exposure to engine bay heat soak breaks down the internal epoxy and secondary windings, leading to increased electrical resistance, voltage leaks, and rough idling. Over time, this results in weak spark delivery, persistent cylinder misfires, unburned fuel entering the exhaust, and a noticeable drop in throttle response. Pair this with worn standard spark plugs, and the engine struggles to maintain optimal stoichiometric combustion, triggering dreaded check engine lights and reducing overall drivability.

The Engineering Solution

This comprehensive ignition overhaul addresses these specific failure points. The upgraded ignition coils are constructed with high-grade durable copper wire internals and an advanced thermal-resistant polymer housing, significantly reducing voltage drop under heavy engine load. By managing heat more effectively, these coils ensure OE+ durability and a consistent output. Complementing the coil packs are six premium iridium spark plugs featuring an ultra-fine center electrode. Iridium's superior melting point allows for a highly concentrated spark, yielding up to a 15% increase in ignition energy transfer. The result is a complete, factory-tested solution that restores a smooth idle, sharpens throttle response, and prevents high-RPM spark blowout.

Technical Specifications

Compatibility

• 2006 Mercedes-Benz CLK350 3.5L V6
• 2007 Mercedes-Benz CLK350 3.5L V6
• 2008 Mercedes-Benz CLK350 3.5L V6
• 2009 Mercedes-Benz CLK350 3.5L V6

The Mercedes Benz Precision Standard

European engineering demands exacting tolerances and precise sensor communication. This ignition kit provides accurate voltage delivery to keep your M272 running seamlessly without triggering sensitive ECU fault codes or false CELs.