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4 HP Executive Spa Pump 2 Speed 230V 3721621-13 (ME-40226-25) 4.00HP 230V - Bubbles Supply

4 HP Executive Spa Pump 2 Speed 230V 3721621-13

Part #: 3721621-13

$382.28
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About this spa pump

This Waterway Executive 56 frame spa pump delivers reliable 4 HP performance for hot tubs and spas requiring high-flow circulation. Built for 230V electrical systems, this two-speed main pump features professional-grade construction with 12.0/4.4A draw specifications, making it ideal for larger residential and commercial spa installations.

Engineered as a direct OEM replacement, this Executive series pump guarantees an exact fit for compatible spa systems without modifications. Bubbles Supply backs every pump with our comprehensive 1-year warranty and same-day shipping when ordered before cutoff. The 56Y frame design ensures proper mounting alignment, but always verify your existing pump's electrical requirements and plumbing connections match before installation to ensure seamless operation.

Exact part number

3721621-13

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • Executive 4HP Spa Pump
  • ME-40226-25

Looking for an older part number? Check our supersession lookup tool

Technical specifications

Voltage
230V
Horsepower
4.0 HP
Frame size
56Y frame
Speed
Two-speed
Amperage
12.0A/4.4A

Common symptoms this part fixes

If your spa is showing any of these signs, this part is likely your fix:

  • Pump won't start
  • Humming but no rotation
  • Low water flow
  • Pump runs but no pressure
  • Excessive noise or vibration
  • Tripping circuit breaker

Not sure if this is your problem? Try our diagnostic centre or .

Before you buy — quick checklist

  • Verify your existing pump's voltage is 230V
  • Confirm horsepower rating matches your spa requirements
  • Measure plumbing union connections for proper fit
  • Check electrical amperage capacity of your spa system
  • Ensure 56Y frame size matches your pump mounting
  • Verify two-speed operation is needed for your spa

Reading the checklist now prevents 90% of returns. Worth the 60 seconds.

Install difficulty: Medium — Some experience neededTypically 45-90 minutes

Warranty

1 year manufacturer warranty against defects

Covers manufacturing defects. Does not cover improper installation, normal wear, or accidental damage.

Warranty claims: warranty@bubblessupply.com

Perfect Fit Guarantee

Ordered with our help and the part doesn't fit? Contact us before installation. We'll resolve it with an exchange, replacement recommendation, or return approval.

Learn about our Perfect Fit Guarantee →

Shipping

We ship across the US and Canada. US orders ship from our US warehouse to US customers; Canadian orders ship from our Canadian warehouse to Canadian customers — no cross-border shipping, no surprise duties. In-stock orders placed before 3pm CT ship same day. Standard shipping $9.95 flat rate. Free shipping on orders over $200. Express options available at checkout.

Returns

30-day hassle-free returns on unused parts in original packaging. Contact us before returning to receive your RMA number.

Frequently asked questions

Check the Compatibility section above to confirm fitment for your spa brand and model. If your model is not listed, use our fitment selector at /pages/find-my-part or ask our parts AI for a personalized recommendation.

In-stock orders placed before 3pm CT ship the same day. You will receive tracking information by email as soon as your order ships.

We accept returns within 30 days of delivery for unused items in original packaging. Email returns@bubblessupply.com with your order number to start a return. Installed electrical parts cannot be returned for safety reasons.

Yes, all new parts come with a 1-year warranty against manufacturing defects. Warranty does not cover damage from improper installation or normal wear and tear.

Customer reviews

AI Fitment Assistant

Tell us your spa model and we will confirm this part fits before you buy.

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