Ignition Coil & Iridium Spark Plugs for Audi A4 Quattro (2002-2005) 3.0L V6

Direct-Replacement Ignition Coil & Iridium Spark Plugs for 2002-2005 Audi A4

Restores proper combustion and eliminates misfire codes on the 3.0L V6. This complete ignition service kit replaces failing factory coils and worn plugs to resolve rough idle, poor fuel economy, and power loss associated with degraded secondary ignition systems.

The Stock A4 Ignition Degradation

The AVK 3.0L V6 engine in the B6 chassis is notorious for ignition coil degradation due to extreme heat soak within the tight cylinder head valley. Factory coil packs suffer from thermal cycling, leading to micro-cracking in the epoxy resin and subsequent voltage leaks. High-voltage energy arcs to the cylinder head rather than jumping the plug gap. This causes multi-cylinder misfires, raw fuel dumping into the catalytic converters, and triggers a flashing CEL. Paired with standard plugs that erode quickly under high-stress conditions, the stock setup requires frequent intervention to maintain baseline efficiency.

The Engineering Solution

This kit provides six upgraded ignition coils paired with high-performance iridium spark plugs to overhaul the AVK ignition system. The redesigned coils feature high-grade silicone boots and reinforced epoxy resin potting that resists thermal breakdown, ensuring consistent voltage output under extreme engine temperatures. Upgraded internal copper windings deliver a stronger spark. The included iridium spark plugs utilize an ultra-fine wire center electrode that requires less voltage to fire while resisting gap erosion. This translates to an intensified spark kernel and a more complete combustion cycle. The result is a stabilized idle, restored throttle response, and robust protection against premature coil failure.

Technical Specifications

Compatibility

• 2002-2005 Audi A4 3.0L V6
• 2002-2005 Audi A4 Quattro 3.0L V6

The Audi Precision Standard

Engineered to meet stringent European tolerance standards, this ignition kit drops into the B6 engine bay with zero modifications. By delivering consistent, high-voltage spark energy, it ensures smooth power delivery and keeps your 3.0L V6 running precisely without triggering a stubborn check engine light.