The Continental Accessory Drive Belt Kit - 135339 is a comprehensive kit of products designed for car maintenance and repair. It includes various components that are essential for the proper functioning of the car's accessory drive system. The kit contains a drive belt, tensioner, and idler pulleys, all of which work together to power the car's alternator, power steering pump, and air conditioning compressor. Additionally, the kit includes a serpentine belt, which is responsible for driving other engine components such as the water pump and air pump. The tensioner and idler pulleys ensure that the belt is in the correct position and properly tensioned. This kit is an essential tool for ensuring the smooth operation of a car's accessory drive system and maintaining its overall performance.