Genuine OEM Audi Timing Chain Sprocket, part number 06E109571A. This sprocket is a key component in the engine's timing chain system, responsible for driving the camshaft(s) and maintaining correct valve timing. It is typically located within the engine's timing cover assembly. Constructed from hardened steel for durability and resistance to wear. Genuine OEM timing components ensure precise synchronization, preventing potential engine damage and maintaining optimal performance.