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4.5 HP Executive Spa Pump 2 Speed 230V 3421821-1A 4.50HP 230V - Bubbles Supply

4.5 HP Executive Spa Pump 2 Speed 230V 3421821-1A

Part #: 3421821-1A

$935.64
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About this spa pump

This Waterway Executive 48 spa pump delivers reliable 4.5 HP, 2-speed performance for larger hot tubs requiring powerful water circulation. Built for 230V electrical systems with a 48-frame motor design, this main circulation pump handles both filtration and jet operation with its dual-speed capability, drawing 12.0 amps on high speed and 3.5 amps on low speed.

As an OEM replacement part, this Executive series pump ensures exact fit compatibility with your existing plumbing connections and electrical setup. Bubbles Supply backs every pump with our 1-year warranty and ships same-day from our Canadian warehouse. The 48Y frame configuration provides drop-in replacement convenience for many spa manufacturers who specify Waterway pumps. Verify your current pump's voltage, horsepower, and frame size match these specifications before ordering to ensure proper fit and performance.

Exact part number

3421821-1A

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Also known as / Replaces

This part replaces or is interchangeable with:

  • Executive 48 Spa Pump
  • Waterway Executive Two Speed Pump

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

Technical specifications

Voltage
230V
Horsepower
4.5 HP
Frame size
48Y
Speed
Two-speed
Amperage
12.0A high speed, 3.5A low speed

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 from jets
  • Pump runs but no water movement
  • Overheating and shutting down
  • Noisy operation or grinding sounds

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

Before you buy β€” quick checklist

  • Verify your existing pump's voltage matches 230V
  • Confirm horsepower rating on old pump label
  • Measure plumbing union connections
  • Check electrical amp requirements match your breaker
  • Ensure 48Y frame size matches your mounting space
  • Turn off power at breaker before starting work

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

Install difficulty: Medium β€” 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 β†’

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 β€” 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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