Lock. Cylinder.
A Lock Cylinder to Lock the vehicle's side hinged door(s). and Amplifier; keys. cover. Door. Housing.
Door Lock Cylinder
Fits 100, A4, A6, S4, S6
Non heated, w/alarm. W/o heated cylinder.
Door Lock Cylinder - Repair or Replace
If your keys don't turn in your door, you might need to replace the door lock cylinder in your .