Genuine OEM Volkswagen Chain Wheel Axial Bearing, part number 079109180D. This component is designed to support the axial rotation of a chain wheel, reducing friction and ensuring stable operation within the engine's timing assembly. It is a thin, circular metal plate, measuring approximately 64mm in diameter and 2mm thick. Choosing a genuine OEM axial bearing ensures the correct material composition and precise tolerances for critical engine function and long-term reliability.