The Genuine BMW Accessory Drive Belt - 32421727180 is a high-quality, durable belt designed specifically for use in BMW vehicles. It is used to drive various accessories such as the alternator, water pump, power steering pump, and air conditioning compressor. The belt is made from high-quality materials and is designed to withstand the rigors of daily use. It is an essential component of the vehicle's engine system and ensures proper functioning of all accessories. This accessory drive belt is an authentic BMW product and is designed to fit perfectly in the designated space. It is a reliable and long-lasting solution for maintaining the optimal performance of your BMW.