Ignition Coil & Iridium Spark Plugs for Mercedes-Benz SLK280 (2006-2008) 3.0L V6

High-Output Ignition Coil & Iridium Spark Plug Kit for 2006-2008 Mercedes Benz SLK-Class

Replaces degrading factory ignition coils and standard plugs with high-grade copper-wound coils and iridium spark plugs to restore factory voltage delivery and eliminate high-RPM misfires.

The Stock SLK-Class Thermal Degradation Issue

Over time, the factory ignition coils on the Mercedes-Benz R171 chassis are notoriously susceptible to thermal degradation. Positioned directly atop the M272 V6 cylinder heads, the OE coils endure extreme heat cycles, leading to micro-cracking in the epoxy potting. This thermal breakdown increases internal electrical resistance, eventually causing weak spark delivery, idle hesitation, and under-load misfires. Compounding the issue, standard factory spark plugs lose their gap tolerances as the center electrodes wear down, requiring more voltage from an already stressed ignition coil.

The Engineering Solution

This comprehensive ignition overhaul kit directly addresses the M272's thermal vulnerabilities. The replacement coils are manufactured with upgraded, high-durability copper wire windings that lower internal resistance and improve thermal stability under heavy engine load. By minimizing voltage drop, these coils ensure a consistent, high-energy spark across the entire RPM band. Paired with advanced iridium spark plugs, the system benefits from an exceptionally fine wire center electrode that requires less firing voltage while resisting spark erosion. This results in up to a 15% increase in spark efficiency, yielding smoother idle characteristics, crisper throttle response, and complete combustion.

Technical Specifications

Compatibility

• 2006-2008 Mercedes-Benz SLK280 3.0L V6
• 2006-2008 Mercedes-Benz SLK350 3.5L V6

The Mercedes Benz Precision Standard

Designed to meet or exceed OE specifications, this ignition kit maintains the strict electrical tolerances required by the Bosch engine control unit, ensuring zero check engine lights (CEL) and restoring true European driving dynamics.