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2.5HP 3-1/4" SL x 4" OD Impeller SD6500-295 2.50HP - Bubbles Supply

2.5HP 3-1/4" SL x 4" OD Impeller SD6500-295

Part #: SD6500-295

$63.87
In stock — ships today
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this impeller

This OEM impeller is designed specifically for Sundance Spas Theramax pump systems, delivering reliable 2.5HP performance to keep your spa water circulating properly. Featuring precise 3-1/4" seal length and 4" outer diameter specifications, this gray polymer impeller ensures optimal water flow and pressure throughout your spa's circulation system.

At Bubbles Supply, we guarantee this SD6500-295 impeller will fit your Sundance pump exactly as intended, backed by our comprehensive 1-year warranty and same-day shipping on in-stock orders. Professional installation is recommended to ensure proper seating and performance, and always verify your existing impeller's dimensions before ordering to confirm compatibility with your specific Theramax pump model.

Exact part number

SD6500-295

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 2.5HP Sundance impeller
  • SD6500 impeller
  • Theramax pump impeller

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

Technical specifications

Horsepower
2.5 HP

Common symptoms this part fixes

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

  • Weak or no jet pressure
  • Pump runs but water flow is significantly reduced
  • Spa jets not reaching full power
  • Visible impeller damage, cracking, or erosion
  • Abnormal noise from pump cavity suggesting impeller contact or wobble

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

Before you buy — quick checklist

  • Measure your existing impeller — confirm 3-1/4" seal length and 4" outer diameter before ordering
  • Verify your pump is a Sundance Theramax model — impeller dimensions vary between pump families
  • Inspect the pump seal and wear ring while the impeller is out — replace if worn to avoid a repeat teardown
  • Check the pump shaft for scoring or corrosion before installing the new impeller
  • Confirm the impeller spins freely on the shaft and threads engage cleanly before final assembly

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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