Genuine OEM Volkswagen Poly-V-Belt, part number 03L903137P. This belt is designed to drive various engine accessories, including the alternator, power steering pump, and air conditioning compressor. It is located in the engine's accessory drive system. Manufactured from high-quality rubber compounds with reinforced cords for strength and longevity. Genuine OEM belts are precisely dimensioned to ensure proper tension and prevent slippage, guaranteeing reliable operation of essential components.