Ignition Coil and Iridium Spark Plugs for Mercedes Benz CLK-Class (1998-2005) 3.2L

Direct-Fit Ignition Coil and Iridium Spark Plug Service Kit for 1998-2005 Mercedes Benz CLK-Class

What it Does: Replaces degraded OEM ignition coils and twin-spark plugs to eliminate secondary ignition breakdown, misfire codes, and restore factory combustion efficiency across all cylinders.

The Stock CLK-Class Ignition Breakdown

The M112 3.2L V6 utilizes a dual-spark plug per cylinder configuration operating within a tightly packed engine bay. Over extended service intervals, sustained underhood thermal cycling causes dielectric breakdown in the factory epoxy casing and secondary coil windings. This degradation leads to high-voltage micro-arcing, intermittent misfires under load (P0300-P0306), rough idle, and unburned fuel entering the exhaust stream, which accelerates catalytic converter failure.

The Engineering Solution

This comprehensive ignition service kit includes six heavy-duty ignition coil packs and twelve matched fine-wire iridium spark plugs engineered to restore complete combustion. The coil-on-plug units feature high-grade primary and secondary copper windings wrapped in high-dielectric epoxy resin to prevent internal shorting under severe thermal stress. The accompanying iridium plugs feature corrosion-resistant nickel shells and laser-welded fine-wire center electrodes, ensuring stable spark projection, lower required firing voltage, and long-term erosion resistance.

Technical Specifications

Compatibility

• 1998-2003 Mercedes-Benz CLK320 Base Coupe (W208) - 3.2L M112 V6
• 1999-2003 Mercedes-Benz CLK320 Base Convertible (A208) - 3.2L M112 V6
• 2003-2005 Mercedes-Benz CLK320 Base Coupe (W209) - 3.2L M112 V6
• 2004-2005 Mercedes-Benz CLK320 Base Convertible (A209) - 3.2L M112 V6

The Mercedes-Benz Precision Standard

Engineered to exact German OE resistance benchmarks, this ignition setup maintains factory primary and secondary circuit tolerances to guarantee CEL-free operation, clean ECU signal feedback, and optimal stoichiometric balance under all load conditions.