Genuine OEM Volkswagen Pulley, part number 077145255H. This pulley is part of the engine's accessory drive system, responsible for transferring rotational motion to other components like the alternator or power steering pump. It is located on the front of the engine. The pulley has a diameter of approximately 96mm and a height of 28mm. Genuine OEM pulleys are manufactured to precise tolerances to ensure smooth operation and longevity, preventing premature wear on belts and bearings.