Genuine OEM Audi Accessory Drive Belt, part number 079903137T. This multi-ribbed belt is responsible for transmitting power from the engine's crankshaft to various ancillary components, such as the alternator, power steering pump, and air conditioning compressor. Measuring approximately 1.12 meters in length, it is designed for optimal tension and durability. Choosing a genuine OEM accessory drive belt ensures the correct material composition for heat and wear resistance, precise length, and rib profile for quiet operation and reliable power transmission to all driven accessories.