Ignition Coil + Spark Plugs for Audi A4 A6 (1998-2001) 2.8L

Direct-Replacement Ignition Coil and Spark Plug Kit for 1998-2001 Audi A4, A6 (B5/C5)

What it Does: The ignition coil pack and spark plug kit replaces heat-stressed factory ignition components on 1998-2001 Audi A4 and A6 2.8L engines to eliminate misfires, restore lost combustion efficiency, and stabilize idle quality.

The Stock Audi A4, A6 Secondary Ignition Breakdown

The 2.8L 30-valve V6 utilizes a unified waste-spark coil assembly mounted near radiant cylinder head heat. Prolonged thermal cycling breaks down the internal potting resin and winding insulation inside the factory assembly. As internal resistance climbs, secondary voltage drops, causing dielectric breakdown, micro-arcing, and hairline casing fractures. Paired with aged spark plugs presenting enlarged gaps, this breakdown triggers persistent random misfires (P0300 through P0306), rough idle, and unburned hydrocarbon wash into the catalytic converters.

The Engineering Solution

This direct-replacement ignition package addresses coil fatigue by providing a complete refresh of the high-tension circuit. The waste-spark pack features high-impact, heat-resistant thermoplastic housing and premium copper secondary windings vacuum-impregnated with dense epoxy resin to prevent dielectric breakdown under full engine load. Paired with six matched, pre-gapped spark plugs with corrosion-resistant terminal studs, this kit delivers consistent spark energy across all six cylinders and eliminates voltage drop without demanding wiring modifications.

Technical Specifications

Compatibility

• 1998-2001 Audi A4 2.8L V6 (Chassis: B5)
• 1998-2001 Audi A4 Quattro 2.8L V6 (Chassis: B5)
• 1998-2001 Audi A6 2.8L V6 (Chassis: C5)
• 1998-2001 Audi A6 Quattro 2.8L V6 (Chassis: C5)

Frequently Asked Questions

Does this fit the B5 and C5 A4, A6?

Yes, this is a direct fit for the 1998-2001 Audi A4 and A6 equipped with the 2.8L 30V AHA and ATQ engine codes.

Does this kit include spark plug wires?

No, high-tension spark plug leads are sold separately; this kit contains the single waste-spark coil pack and six spark plugs.

The Audi Precision Benchmark

European Motronic engine management systems depend on exact resistance values to maintain clean emission parameters and accurate misfire detection. Installing matched ignition coils and spark plugs restores factory electrical thresholds, preventing check engine lights, protecting expensive catalytic converters, and maintaining factory timing advance curves.