Genuine OEM Volkswagen Rear Door Lock Actuator, part number 7N0843642M9B9. This essential component is responsible for the precise locking and unlocking functions of the vehicle's rear door. It is located internally within the rear door assembly, operating the latch mechanism. The actuator features a durable housing, often in Satin Black (9B9) finish. Opting for a genuine OEM door lock actuator ensures correct electrical calibration, mechanical precision, and long-term reliability, critical for vehicle security and proper door function.