Ignition Coil + Spark Plugs for Mercedes Benz SL-Class (1996-2002) 6.0L

Direct-Fit Ignition Coil and Spark Plug Kit for 1996-2002 Mercedes Benz SL-Class (R129)

What it Does: The ignition coil and spark plug kit replaces aged ignition components on the 1996-2002 SL-Class to restore precise spark timing, eliminate cylinder misfires, and maintain smooth V12 idle stability.

The Stock Mercedes Benz SL-Class Ignition Breakdown

In the tightly packaged engine bay of the R129, severe heat soak rapidly deteriorates factory ignition components. Over continuous heat cycles, the internal copper windings and dielectric epoxy of the factory coils degrade, causing secondary voltage leakages and internal shorts. Paired with eroded electrode gaps on aged plugs, this impedance drop triggers intermittent under-load misfires, rough idle, and unburned fuel delivery that damages expensive downstream catalytic converters.

The Engineering Solution

This 12-cylinder overhaul kit features direct-fit coil-on-plug modules built with high-grade magnetic silicone steel laminations and premium thermal-resistant epoxy potting to resist high-temperature breakdown. Matched with precise-gap spark plugs, the package delivers consistent high-kV discharge under peak cylinder pressures. Replacing the entire bank at once balances coil primary resistance and secondary inductance across the M120 firing order, preventing Bosch Motronic ME diagnostic fault codes.

Technical Specifications

Compatibility

• 1996-2002 Mercedes Benz SL600 6.0L V12 (Chassis: R129, Engine: M120)

Frequently Asked Questions

Does this fit the R129 SL-Class?

Yes, this is a direct fit for the 1996-2002 Mercedes Benz SL-Class equipped with the M120 6.0-liter V12 engine.

Will replacing coils and plugs resolve a check engine light for multi-cylinder misfires?

Yes, swapping out compromised coils and fouled plugs restores factory spark energy and resolves ignition-related P0300 through P0312 DTCs.

The Mercedes Benz Precision Standard

Preserve the refined balance of the flagship German V12. This direct-replacement ignition kit meets strict European tolerances, ensuring seamless communication with factory engine management and guaranteeing no-CEL, factory-smooth running performance.