Shop OEM 2018 Audi Part # 078905104A (078-905-104-A, 078905104, 78905104). Ignition Coil. 2.8 liter. A4; 2.8L. A6/S6. Passat; 2.8L. Ignition Coil - Repair or Replace A failed ignition coil in your 2018 Audi

Ignition coil.
An induction coil, used with a distributor for timing, to transform a vehicles battery voltage to a much higher voltage needed to create proper spark for all spark plugs of an engine.

Ignition Coil

Fits A4, A6, S6

2.8 liter. A4; 2.8L. A6/S6. Passat; 2.8L.
Ignition Coil - Repair or Replace
A failed ignition coil in your 2018 Audi can lead to anything from an intermittent misfire to a car that won't start.