Genuine OEM Volkswagen Retaining Ring, part number 0A3311327N. This component serves as a critical fastener within the transmission assembly, ensuring that internal gears and bearings remain securely positioned on the shaft. It is located on the main transmission shaft as indicated in the assembly diagram. Manufactured to exact factory tolerances, this ring provides the necessary tension to prevent axial movement of drivetrain components. Genuine OEM parts are essential for transmission repairs to ensure the precise fit and structural integrity required for long-term reliability under high-torque conditions.