Viper 5CFM Vacuum Pump Motor Coupling

This is a specialty part used by the vacuum pump on a Viper 8000 A/C Service Station. The plastic coupling on the Viper 5 CFM vacuum pump is prone to breaking after a long lifetime of use or if the pump becomes hydro-locked with oil. To make matters worse; finding replacement parts for these pumps is near impossible with an alternative of spending $700 on a new vacuum pump.

This part slips onto a pair of gears (one on the output shaft of the electric motor and the other on the input shaft of