Genuine OEM Audi Engine Timing Chain Sprocket, part number 079109570AT. This precision-machined 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. It is installed within the engine's timing assembly. Made from high-strength steel, it weighs approximately 0.24 kg. Genuine OEM timing chain sprockets are manufactured to exact tooth profiles and material hardness, ensuring optimal chain engagement, minimal wear, and precise engine timing for reliable performance.