Pressure sensor. W/O 5.0L. A safety Switch that monitors the Pressure of the refrigerant. A/C Refrigerant Pressure Sensor. Auxiliary A/C. Conditioning (A/C) Refrigerant. CUT - Off. HVAC. Included with: AC tube, Condenser, Front AC line, Liquid line, Liquid line Part cannot be reused/reinstalled, Pressure line, Tube assembly.