The Continental Drive Belt Kit - 135354 is a comprehensive set of products designed to service a car's drive belt system. It includes four different components: a drive belt tensioner, a drive belt idler pulley, a drive belt, and a drive belt tensioner bolt. These products work together to ensure the proper functioning of the drive belt, which is responsible for transferring power from the engine to various components of the car such as the alternator, air conditioning compressor, and water pump. The kit is suitable for a wide range of car models and can help improve the performance and longevity of the drive belt system.