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

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  • Product Description

    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.  If you have any questions please contact us at 1-888-356-4202
  • Product Reviews


    Write A Review

    1. Great pump & service

      Had to make a small adjustment to the spa pack as this pump was a touch wider than the Gecko pump I had, but overall works perfectly. Gentleman I spoke to on the phone was very friendly and helpful. Highly recommend Canada Hot Tub Parts. on 22nd Nov 2020

    2. FANTASTIC!!!!

      I was in a pinch as we lost our second pump on the hot tub. With colder temps around the corner I was worried about sitting water in the manifolds (just replaced). I received the pump 2 days after ordering!!!

      Extremely happy withy experience with Canada Hot Tub Parts. Thank you!!!
      on 10th Nov 2020

    3. Product works as advertised

      Replaced old waterway with new one, good price and product shipped in good condition. on 10th Oct 2020

    4. Fast ship, great fit

      Received pump very quickly. Was kept updated with text messages about shipping. Pump was an exact fit. Just had to move the heating unit about 1/2” to get the top fitting on. Highly recommend ordering from this company on 22nd Jul 2020

    5. Super quiet

      I recently purchased a Waterway and its a replacement. Great pump that is really quiet. I would recommend this product for anyone looking for a spa pump. on 9th Jun 2016

    6. Fits perfect !

      Just bought this pump and had a local company change it for us. It was easy for them to change and runs super quiet compared to old one. Came with correct cord.
      on 20th Feb 2014

    7. High Quality Pump !

      The Executive 56 is easy to install and re align the housing if required. Within an hour I was back up and running.

      Highly Recommended !
      on 27th Oct 2013

  • Warranty Information

    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