4 HP Waterway Viper Spa Pump 2 Speed 230V 3721621-1V

Pump, Waterway Viper, 4.0HP, 230V, 12.0/4.4A, 2-Speed, 2-1/2"MBT, SD, 56-Frame
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4 HP Waterway Viper Spa Pump 2 Speed 230V 3721621-1V
Committed to innovation & excellence since 1973
The Viper pool and spa pump features a 90º rotating wet end for full versatility. This pump is available in 4.0 HP (Full Rated) and 2-speed. Designed for high volume, low pressure systems. the ideal choice for swim spas.


  • Ultra high performance Viper wet end specifically designed for 56-frame motors
  • Extra large 2 1/2" intake for improved flow performance and noise reduction
  • Large 8" diameter wet end to move higher volumes of water at lower pressures

NOTE - Does not include unions or pump cord

**Pump & motor manufacturers reserve the right to change motors on pumps or style of motor without notice. Motors shown may differ from current stocked product. Functionality remains the same**

Additional Information
Cord Type NONE
Voltage 230
Horsepower 4
Discharge Location Side
Discharge Size 2-1/2" MBT
Frame Size 56Y
Number of Speeds 2
Frequency (Hz) 60
High Speed (Amp) 12
Lo Speed (Amp) 4.4
Alternate Part Numbers
Available Documentation
  • 1-00-0106
  • 5175-304
  • WW37216211V
  • 3721621-1T
  • 37216211T
  • 15-350-1621
  • 3721621-0T7H
  • PV30-2N22C
  • 3711621-0T7N
  • 3721621-0V
  • PV-40-2N22C
  • 34-270-3508N
  • 34-270-3508W
  • 34-270-3508