Ignition Coil and Iridium Spark Plugs for Audi A6 (2008-2011) 2.8L

Direct-Fit Ignition Coil and Iridium Spark Plug Kit for 2008-2011 Audi A6

Replaces degraded factory ignition components with high-dielectric coil packs and fine-wire iridium spark plugs to eliminate misfires and restore precise combustion timing.

The Stock C6 Ignition Thermal Degradation

Factory coil packs on the Audi C6 2.8L EA837 engine operate in an enclosed cylinder head environment prone to heavy thermal soak. Over time, high temperatures degrade the internal epoxy insulation and copper winding integrity, resulting in micro-arcing, internal resistance drift, and secondary voltage drop under load. Combined with standard plug gap erosion, this degradation leads to cold-start stumbling, rough idling, and unburned fuel entering the exhaust tract.

The Engineering Solution

This 6-cylinder ignition overhaul kit pairs direct-fit coil-on-plug assemblies with durable iridium spark plugs. The ignition coils utilize premium copper primary and secondary windings encased in heat-resistant potting compound to prevent dielectric breakdown under continuous thermal cycling. Matched with fine-wire laser-welded iridium electrode spark plugs, the system reduces required firing voltage, stabilizes the spark kernel, and promotes efficient flame front propagation across the entire powerband.

Technical Specifications

Compatibility

• 2008-2011 Audi A6 2.8L V6 (Chassis: C6 / Typ 4F)
• Interchange Part Numbers: UF529, UF-529, 06E905115D, 06E905115A, 06E905115B, 06E905115C, 06E905115E, 06E905115F, 5C1688, 5C1846, 5C2121, IC609SB, PFR6Q, PF6RQ

The Audi Precision Standard

Direct-injection European engines demand exact spark delivery to prevent diagnostic fault codes and maintain smooth operation. This ignition kit matches OEM resistance and dwell parameters, ensuring reliable cold starts and zero check-engine lights.