COOLTech A/C Compressor Clutch Kits include the compressor clutch, which engages and disengages the compressor when the A/C is switched ON and Off, and other related components. The compressor clutch kit consists of a pulley with the bearing already pressed in, a pressure plate, and electromagnetic coil . These kits are manufactured to fit your specific vehicle (only fits original compressors, does not fit aftermartket compressors), providing the same performance, durability, and service life you expect from a high quality aftermarket part. Includes: Pulley + Bearing + Coil + Front Plate Hub Shims + Retaining clips and Center bolt also included