Genuine OEM Audi Primary Shaft, part number 0AW323911AR. This component is a crucial part of the transmission assembly, responsible for transmitting rotational power from the torque converter to the rest of the drivetrain. It is located within the transmission housing. This part is made from high-strength steel to withstand significant torque and rotational forces. Genuine OEM parts are manufactured to exact specifications, ensuring proper meshing with other gears and maintaining the integrity of the transmission for a vibration-free service life.