Genuine OEM Audi Engine Poly-V-Belt, part number 079903137AG. This multi-ribbed belt is designed to transmit power from the engine's crankshaft to essential engine accessories, such as the alternator, power steering pump, and air conditioning compressor. Weighing approximately 0.097 kg, it is engineered for durability and precise fitment. Opting for a genuine OEM poly-V-belt guarantees 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.