Genuine OEM Audi Toothed Belt Pulley, part number 06D109111B. This metal pulley is designed to precisely transfer power from a toothed belt to a rotating component within the engine or accessory drive system. Weighing 0.635 kg, it features specific tooth geometry for optimal engagement and minimal slippage. Using a genuine OEM toothed belt pulley ensures correct timing, reduces wear on the belt, and maintains the efficiency and reliability of the engine's power transmission system.