Buy 1999 Audi A4 1.8L A/T Quattro Lock. Latch. Motor. 100, 200 Series; Right. A4; Right. A6/S6; Right - OEM Audi Part # 8D0839016D (8D0-839-016-D)

Mechanism to secure door to chassis. Motor to Lock and unLock car door. To Chassis/VIN 4A-V-080 000. To Chassis/VIN 4A-V-120 000. Vacuum Operated System. AND Amplifier; switch. Door Actuator.

Door Latch AssemblyDoor Lock Actuator Motor

Fits 100, A4, A6, S4, S6

100, 200 Series; Right. A4; Right. A6/S6; Right. Passat; Right. S4; Right.
Door Lock Actuator - Repair or Replace
Your 1999 Audi A4 may need a new door lock actuator if your keyless entry doesn't work or your lock button doesn't lock the doors.