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3.5HP 3" SL x 4-13/16" OD Impeller IMP-56WUA350 3.50HP - Bubbles Supply

3.5HP 3" SL x 4-13/16" OD Impeller IMP-56WUA350

Part #: IMP-56WUA350

$11.76
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About this impeller

This 3.5HP impeller is designed for LX 56-frame pumps in residential spas and hot tubs. The 56WUA model features a 3" suction line connection and 4-13/16" outer diameter, making it compatible with newer style LX pump configurations. Built to OEM specifications, this replacement impeller delivers the precise water flow and pressure your spa system requires for optimal performance.

At Bubbles Supply, we guarantee an exact fit for your LX pump setup, backed by our comprehensive 1-year warranty. Orders ship same-day when placed by 2 PM EST, getting your spa back to full operation quickly. Before installation, verify your pump's frame size and impeller measurements to ensure proper fitment – the 56-frame designation and dimensional specs should match your existing component exactly.

Exact part number

IMP-56WUA350

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 56-frame 3.5HP impeller
  • LX 56WUA 3.5HP Impeller
  • LX pump impeller 3.5HP

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

Technical specifications

Horsepower
3.5 HP
Frame size
56 frame

Common symptoms this part fixes

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

  • Weak jets with no change at pump
  • Low water flow despite pump running
  • Pump cavitating or making grinding noise
  • Broken or chipped impeller vanes visible on inspection
  • Excessive vibration from pump housing
  • Pump runs but spa cannot reach operating pressure

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

Before you buy — quick checklist

  • Confirm your pump is an LX 56-frame model — check the pump label for the 56WUA designation
  • Measure your existing impeller's outer diameter and verify it matches 4-13/16"
  • Verify the suction port size on your existing impeller is 3" SL before ordering
  • Note the HP rating on your pump's motor nameplate — confirm it is 3.5HP
  • Inspect the diffuser and wear ring while the pump is open — replace if worn to avoid repeat failures

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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