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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

    Posted by Len Coffey on Nov 25, 2022

    Knowledgeable staff, very helpful and polite

  • 5
    Waterway executive pump

    Posted by Paul Hebert on Sep 18, 2022

    Thank you for your very good services and great products

  • 5
    Water pump

    Posted by Brian Preston on Apr 05, 2022

    Fit right in easy install

  • 5

    Posted by Kevin Swanson on Mar 13, 2022

    Honestly, I can talk about the performance of the pump itself, as I haven't had a chance to install it yet. If it is anything like the product that I am replacing - the exact same pump - then I expect I will get many years of service out of it. The current one has lasted 15 years.

    The service from Canada Hot Tub Parts was excellent, however. The pump was sent quickly, and arrived sooner than I expected, in great shape. Thanks, folks! Can't wait to get the hot tub up and running again!

  • 5
    Great doing business

    Posted by Philippe on Feb 23, 2022

    It was great doing business. We spoke to a sell rep for our parts and with few minute he know exactelly what we need. Parts was ship right after we order. Also we save like 400$ from buying local.

    Thanks, will do business again

  • 5
    Pump works great service as always prompt delivery.

    Posted by ken embury on Dec 11, 2021

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

  • 5

    Posted by MARCEL CHARBONNEAU on Nov 18, 2021

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

  • 5
    2 Speed pump fit perfectly

    Posted by Eric McCarty on Nov 08, 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 Sep 20, 2021

    Easy to hook up and quiet as well