Genuine OEM Volkswagen Cylinder Head Bolt Washer, part number 06D103377. This washer is designed to provide even load distribution for cylinder head bolts, ensuring proper torque application and a secure seal for the cylinder head. It is installed with the cylinder head bolts in the engine assembly. Measuring approximately 22mm in diameter and 2mm thick, it is a small but critical component. Using genuine OEM washers ensures the correct material hardness and precise dimensions for optimal engine performance and longevity.