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Waterway Executive Pump 56F 4HP 2 Speed 2.5"/2"

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Waterway Executive Pump 56F 4HP 2 Speed  2.5" # 3721621-13

  • 4 HP Waterway Executive 56 Hot Tub Pump
  • Waterway OEM Part # 3721621-13
  • 2.5" Intake and 2" Discharge
  • Wet end can be rotated 90 degrees
  • High Speed 12.0 Amps ( 3450 RPM )
  • Low Speed 4.4 Amps ( 1725 RPM )
  • New Cord not included, sold separately if required
  • Additional barb fitting maybe required in place of drain plug. Part # 672-4350


The 4 HP Waterway Executive 56 # 3721621-13 is a durable high performance pump that delivers reliable water flow efficiently. Always select a replacement pump with the same part number as the Waterway part number.  If you have any questions please contact us at 1-888-356-4202
One (1) Year Limited Warranty on Product, see Owner's Manual for a full description of warranty claims and coverage details.


  • 5
    Pump Ordered

    Posted by Kris Kolochen on 13th Feb 2021

    Ordered a pump online during Xmas. Once I explained that it somehow got missed during the holiday. I was given an apology about the missed shipping ASAP and rec'd the product within the week. Very good service. Thanks.

  • 4
    new pump install

    Posted by freddy on 27th Nov 2017

    all went good, but watch the wiring configuration, as it was a bit different compared to the old pump