Genuine OEM Volkswagen Crankshaft Pulley with Vibration Damper, part number 077105251Q. This component is mounted on the front of the crankshaft and serves to drive the vehicle's accessory belts, such as the alternator and power steering pump. It also incorporates a vibration damper to absorb torsional fluctuations from the engine's combustion cycles, contributing to a smoother running engine and reduced stress on the crankshaft. Genuine OEM parts are manufactured to precise specifications for perfect balance and long-term durability.