The Genuine BMW Drive Belt Kit - 461227 is a comprehensive kit designed to provide all the necessary components for the maintenance and replacement of a car's drive belt system. This kit is specifically designed for BMW vehicles and includes the following contents: a drive belt, tensioner pulley, idler pulley, tensioner shock, water pump, thermostat, thermostat housing, drive belt tensioner, and drive belt tensioner bolt. These components are essential for ensuring the proper functioning of a car's drive belt system, which is responsible for powering various engine components such as the alternator, air conditioning compressor, and power steering pump. This kit is designed to provide a convenient and reliable solution for maintaining the drive belt system of a BMW vehicle.