REPRODUCTION. You are purchasing a POA (Piolet Operated Absolute) update kit that replaces the original POA valve to convert the air conditioning (A/C) system to a cycling clutch system as found on later model vehicles to eliminate problems with sticking internal piston. This POA system can be used with the R134A refrigerant. This was used on many GM models from 1965-1973.
Please check the Matching Vehicles tab to confirm this part is applicable to your vehicle.