Genuine OEM Audi Synchronizer Ring, part number 0B4311283A. This synchronizer ring is a vital internal component of the transmission, responsible for matching the speed of the gear to the speed of the shaft, enabling smooth and synchronized gear engagement. It is located within the transmission gearbox assembly. Manufactured to exact specifications with precise tolerances to ensure reliable gear changes. Genuine OEM parts are essential for maintaining the integrity and performance of the transmission's shifting mechanism.