Genuine OEM Audi Serpentine Belt, part number 07C145933S. This essential engine component transmits power from the crankshaft to various peripheral accessories such as the alternator, power steering pump, and air conditioning compressor. It is located on the front of the engine, routing around multiple pulleys. Constructed from durable rubber compounds, it weighs approximately 0.402 kg. Opting for a genuine OEM serpentine belt ensures correct length, tension, and material composition for optimal power transfer and long-term reliability.