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1.5HP 2" SL x 3-5/8" OD Impeller 6500-551 1.50HP - Bubbles Supply

1.5HP 2" SL x 3-5/8" OD Impeller 6500-551

Part #: 6500-551

$58.97
In stock — ships today
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Also replaces

6500-551
1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this impeller

This Jacuzzi OEM impeller is designed for 1.5HP Piranha, Theramax, and Theraflo spa pumps, delivering the precise water flow your hot tub needs for optimal performance. The 2" suction line connection and 3-5/8" outer diameter ensure proper hydraulic matching with your existing pump volute.

Built to original Jacuzzi specifications, this genuine replacement impeller restores your spa's circulation power while maintaining quiet operation. At Bubbles Supply, we guarantee an exact fit for your pump assembly and ship same-day from our Canadian warehouse. Every impeller comes with our comprehensive 1-year warranty for complete peace of mind. Always verify pump model and impeller dimensions before ordering to ensure proper fitment with your specific Jacuzzi spa system.

Exact part number

6500-551

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 1.5HP Jacuzzi impeller
  • 6500-551
  • Jacuzzi Piranha impeller
  • Theraflo impeller
  • Theramax pump impeller

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

Technical specifications

Horsepower
1.5 HP

Common symptoms this part fixes

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

  • Weak or reduced jet pressure
  • No water flow despite pump running
  • Impeller cracked, chipped, or visibly damaged
  • Grinding or rattling noise from pump housing
  • Pump runs but jets barely move water
  • Cavitation noise from pump

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

Before you buy — quick checklist

  • Confirm your pump model is Piranha, Theramax, or Theraflo before ordering
  • Measure your existing impeller's outer diameter — must match 3-5/8" OD
  • Verify suction port size on your volute is 2" SL (slip)
  • Check the horsepower rating on your pump label matches 1.5HP
  • Inspect the pump shaft and seal plate for wear before reinstalling — replace seal if needed
  • Confirm the part number 6500-551 against your existing impeller if still legible

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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