Genuine OEM Volkswagen Transmission Protective Ring, part number 0BU409375. This ring is designed to protect sensitive internal components within the vehicle's transmission assembly from debris or wear. It is a critical part of maintaining the longevity and performance of the drivetrain. Measuring approximately 7.1 cm in diameter and 1.1 cm in height, this ring provides a precise barrier. Using a genuine OEM protective ring ensures the correct material and dimensions for optimal protection and reliable transmission operation.