Description
Waterway Viper Pump 5.0 Impeller exclusively for a Waterway Viper pump which has 2 1/2" inlet and outlet which measures about 3 9/16" across the threads...I have found this 5HP pump impeller to be on a 14-16 amp motor...
Closed face impeller made for the Viper pump by Waterway Plastics. Rated at 5.0hp, it is used in a Waterway Viper pump wet end, and must be installed on a 5.0hp (or greater) thru bolt motor. 
Impeller Type    Closed Face
Impeller Diameter OD    3-11/16"
Vane Width ID    11/16"
Eye Diameter OD    2-5/8"
Eye Length    9/16"
Impeller Width OD    29/32"
Seal Seat Depth    7/32"
Shaft Length    1-1/2"
Shaft Diameter OD    5/8"
Seal Seat Diameter OD    1-1/4"
Manufacturer    Waterway
Pump Application    Viper
 
             
             
                             
                             
                             
                             
                             
                             
                             
                             
                             
                                 
             
                                 
             
                                 
             
                                 
             
                                