Audi S4 B6 4.2L V8 Ignition Coils

Set of (8) Bremi Ignition Coils Part #: 077905115T or 077-905-115-T BREMI ignition coils are direct replacements for the 2003-2005 V8 4.2L Audi B6 S4 engine. Ignition coils transform a car battery's voltage into the higher voltage needed for the spark plugs to create a spark in the combustion chamber. They are important for engine timing and performance. We recommend replacing ignition coils and spark plugs at the same time, or every 40,000 miles. Symptoms of ignition coils going bad are similar to spark plugs going bad: slow starts, engine misfires, rough idle, and sluggish engine performance.