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

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Waterway Executive Pump 56F 4HP 2 Speed  2", #3721621-1D

  • 4 HP Waterway Executive 56 Hot Tub Pump
  • Waterway OEM Part # 3721621-1D
  • 2.0" 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 # 3721621-1D 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.  

One (1) Year Limited Warranty on Product, see Owner's Manual for a full description of warranty claims and coverage details. Warranty to be registered by homeowner


  • 5
    Pump works great service as always prompt delivery.

    Posted by ken embury on 11th Dec 2021

    Not proper O rings,should advertise or include as other sites often do.

  • 5

    Posted by MARCEL CHARBONNEAU on 18th Nov 2021

    Pump was replaced and working perfectly. Delivery was fast. Very knowledgeable staff.

  • 5
    2 Speed pump fit perfectly

    Posted by Eric McCarty on 8th Nov 2021

    The far bolt was worn so I had to cut it. I then used a toggle prepositioned in the new pump which dropped into the hole as I squeezed the pump in place. Look at the diagram on the pump for the correct wiring. I used an Oil filter wrench to loosen the water pipes. Probably a good idea to order new O ring seals. Very happy with the pump although delivery was a little slow.

  • 5

    Posted by Patrick on 20th Sep 2021

    Easy to hook up and quiet as well

  • 5
    fast shipping and good price !

    Posted by Alexandre Bosiacki on 10th Aug 2021

    my Spa works like new !! thanks !

  • 4
    Replacement pump for sunrise spa.

    Posted by James Smith on 30th Apr 2021

    Perfect fit. Talked directly with a someone to double check before ordering. Was very helpful.
    Delivered in two days to my door.
    Only issue was the bracket was bent to affix motor. Was an easy enough adjustment.

  • 5

    Posted by Paul J Guerriero on 19th Apr 2021

    This pump was $200 more everywhere else I looked.

  • 5
    as shown

    Posted by Robert Kaufmann on 31st Mar 2021

    Received product within 24 hours. Was the exact fit. Hot tub up and running in about an hour.

  • 5
    Just Awesome

    Posted by Kevin on 4th Feb 2021

    Good price. Works well. Ordered 1 day and received the next. Couldn't ask for a quicker turn around!!