Genuine OEM Audi Timing Chain Tensioner, part number 0P2109218E. This component is crucial for maintaining the correct tension on the timing chain, ensuring precise synchronization of the engine's camshaft and crankshaft. Proper chain tension prevents skipping and ensures optimal engine performance and longevity. This part is located within the engine's timing system. Made from high-quality materials for durability and consistent performance. Genuine OEM parts ensure precise calibration and reliable operation.