Genuine OEM Audi Rear Right Door Window Regulator, part number 3C9839462L. This assembly is installed within the rear right door and is responsible for controlling the precise up and down movement of the window glass. It typically includes the motor, cables, and guide rails necessary for smooth and reliable window operation. Weighing 3.157 kg, this genuine OEM regulator ensures factory-specified fit, quiet operation, and long-term durability of the lifting mechanism, preventing common issues like binding or slow movement.