The BMW AC compressor is a part of the air conditioning system of your BMW unit that is used to pump the refrigerant as well as to increase the temperature and pressure of the gases. This AC device is typically a mechanical component that is powered by the engine using a drive belt or via a magnetic clutch. There are two types of AC compressors that may be used on your ride namely the piston type and the scroll type. Both components basically work by forcing the liquid refrigerant from the evaporator to flow to the condenser. But, before it reaches the condenser, the compressor greatly increases first the pressure as well as the temperature of the refrigerant. The AC compressor typically fails when metal debris begins to be thrown out from the vent to the cabin of your BMW. This may be true only if the evaporator also starts to fail causing its metal tubes to crack, causing the debris to get inside the compressor. The metal parts of the evaporator can adversely affect the compressing ability of the device, wherein the refrigerant may have lower pressure, and thus lower temperature will also be created. To keep your AC system at its best shape, replacement or flushing of the evaporator is needed before replacing the AC compressor. But it is more advisable to replace both devices in order to clean the system from the metal parts chipping off the old evaporator. For your needs of BMW AC compressor and other parts of your BMW AC system, run to a reputable auto parts and accessory provider like us. Our online catalog is now carrying direct replacement aftermarket parts and accessories including wide selection of BMW AC compressors. These replacement BMW AC compressors are outsourced from the most reliable auto product manufacturers in the industry today, so you are truly guaranteed of high quality when you deal only with us.