PartQualifier: for refridgerant hose. Pressure sensor. R-744 REFRIGERANT. to 07/18/2022. A safety Switch that monitors the Pressure of the Refrigerant. A/C Refrigerant Pressure Sensor. Location-Liquid Hose. To 07/18/2022. Included with: Lower pipe, Rear AC tube Part cannot be reused/reinstalled, Refrigerant Hose Part cannot be reused/reinstalled, Upper pipe Part cannot be reused/reinstalled.