Genuine OEM Audi Engine Timing Chain Sprocket, part number 03F109571F. This precision-machined metal sprocket engages with the timing chain to synchronize critical engine components, ensuring precise valve timing and engine operation. It is an integral part of the engine's timing system. Weighing 0.235 kg, its robust construction is designed for high-stress environments. Genuine OEM timing components are manufactured to exact tolerances, ensuring proper chain engagement, minimal wear, and reliable long-term engine performance.