Genuine OEM Audi Camshaft Chain Sprocket, part number 03C109571F. This essential engine component is responsible for transmitting rotational force from the timing chain to the camshaft, ensuring precise valve operation. It is positioned within the engine's timing assembly, typically at the front of the cylinder head. Manufactured from high-strength steel, this sprocket features a precise tooth profile for optimal chain engagement. Choosing a genuine OEM sprocket guarantees the correct metallurgical properties, tooth geometry, and dimensional accuracy for reliable and long-lasting engine timing.