In every vehicle system, there is always a single component that is considered as the most significant which acts as the heart of the entire structure. While the engine is considered as the heart of the engine system, the AC compressor like your Plymouth AC compressor is considered as the major component of the AC system. It is a type of a mechanical pump controlled by a belt connected to the engine. The AC compressor is situated at the center of the air conditioning system, between the high and low pressure side. Similar to the human heart, the AC compressor essentially pumps the fluid in order to have a smooth flow in a sealed loop through the different areas of the system. If the human heart pumps blood, your Plymouth AC compressor pumps the refrigerant that is the chief responsible in absorbing the heat that builds up within the cabin of the vehicle. The task of this device is to provide a comfortable environment for daily automotive use by simply compressing and transferring the liquid refrigerant through a pipe. While the AC compressor compresses the liquid refrigerant, it maximizes both the temperature and the pressure. After, when the refrigerant reached the high pressure, it will be released to the condenser, considered as the integral part of the high pressure side of the AC system. So from the condenser, the refrigerant is taken to the different parts of the system, evaporator and flows to the closed loop. Now, if your old AC compressor has seen better days, well, you should replace it with a top quality Plymouth AC compressor. And you can get it here.