Genuine OEM Volkswagen Poly-V Belt, part number 6RF260849. This belt is designed to drive multiple accessories in the engine bay, such as the alternator, power steering pump, and air conditioning compressor. It is identified as item 7 in the diagram. The belt's ribbed construction ensures efficient power transfer. Genuine OEM belts are manufactured to exact lengths and tension specifications for optimal performance and longevity, preventing premature wear on accessory components.