Genuine OEM Audi Protective Ring, part number 0B4409375. This protective ring serves as a seal or spacer within the transmission or differential housing, crucial for preventing fluid leaks and maintaining the correct alignment and operation of internal components. It is situated within the drivetrain assembly. Made from robust materials, it is engineered to resist wear and chemical degradation from transmission fluids. Genuine OEM parts ensure precise fitment and optimal sealing performance for the drivetrain.