The INA Accessory Belt Kit - 135945 is a comprehensive kit designed for use in cars. It includes a variety of products that are essential for maintaining and servicing the car's accessory belt. The kit contains three main components: a belt tensioner, a belt idler pulley, and a drive belt. These parts work together to ensure that the accessory belt is functioning properly and efficiently. The belt tensioner is responsible for keeping the belt tight and in place, while the idler pulley helps guide the belt along its path. The drive belt is the main component that powers various accessories in the car, such as the alternator, power steering pump, and air conditioning compressor. This kit is designed to provide all the necessary components for a complete and efficient replacement of the car's accessory belt system. It is a reliable and convenient solution for maintaining the smooth operation of the car's accessories.