Waterway Viper Complete 4HP Wet End fits on a Waterway Viper pump which has 2 1/2" inlet and outlet which measures about 3 9/16" across the threads...

If you don't need a complete wet end a list of parts are below...

Click Here for the Face Plate

Click Here for the Face Plate O-Ring

Click Here for the Volute

This pump uses a different seal than all other Waterway pumps click here for the Seal Kit only

Click here for a Seal and (1) Bearing Kit

Click Here for an additional bearing if needed

Click Here for 4HP Impeller
 
Click Here for 5HP Impeller

Click Here for Wear Ring

Pump to Motor Foot Types    1
Motor Frame    56 Frame Thru-Bolt
Drain Plug Location    3,4,6,9 o`clock
Suction Auxillary Port    None
Suction Style    Center
Suction Connection (Physical Dimension)    3-11/16"od
Suction Connection Type    Male Buttress Thread (mbt)
Suction Pipe Size    2-1/2"
Discharge Auxilary Port    None
Discharge Style    Side
Discharge Connection (Physical Dimension)    3-11/16"od
Discharge Connection Type    Male Buttress Thread (mbt)
Discharge Pipe Size    2-1/2"
Horsepower    4.0hp
Manufacturer    Waterway
Pump Model    Viper
Manufacturer Impeller Number    310-2200
Volute Fastening Type    8 Screws
Volute/Sealplate Number    315-1500