Genuine OEM Volkswagen Engine V-Ribbed Belt, part number 04L145933. This essential belt transmits power from the engine's crankshaft to drive various accessory components, such as the alternator, power steering pump, and air conditioning compressor. Genuine OEM belts are engineered with specific rib profiles and material compounds to ensure optimal tension, minimize slip, and provide factory-level tolerance for vibration-free service life, preventing premature wear and system failures.