Genuine OEM Volkswagen Timing Belt, part number 074109119R. This timing belt is essential for synchronizing the rotation of the crankshaft and camshaft, ensuring the engine's valves open and close at the correct times. It is a toothed belt that engages with pulleys on the crankshaft and camshaft. Genuine OEM timing belts are manufactured with high-strength materials and precise tooth profiles to ensure reliable operation and prevent premature failure, protecting the engine from catastrophic damage.