Genuine OEM Audi Engine Timing Chain Sprocket, part number 03H109570E. This precision-engineered component is crucial for the engine's timing system, engaging with the timing chain to synchronize the rotation of various engine components, such as the crankshaft and camshafts. Accurate synchronization is vital for optimal engine performance and preventing internal damage. Constructed from durable, hardened metal, this sprocket measures approximately 0.058 m in diameter and weighs 0.263 kg. Using a genuine OEM sprocket ensures precise tooth profiles and material strength, critical for the long-term reliability of the engine's timing system.