Genuine OEM Volkswagen Auxiliary Generator V-Ribbed Belt, part number 059903137CC. This critical component transmits power from the crankshaft to the auxiliary generator and other engine accessories, such as the power steering pump or air conditioning compressor. It is installed on the engine's accessory drive system. Made from durable rubber compounds, this belt is designed for long-lasting performance. Choosing a genuine OEM belt ensures precise tension, correct rib profile, and material integrity for optimal power transmission and extended service life of connected components.