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48Y Frame 1-1/2" MBT x 1-1/2" MBT Wet End 91040720-000 1.50HP - Bubbles Supply

48Y Frame 1-1/2" MBT x 1-1/2" MBT Wet End 91040720-000

Part #: 91040720-000

$205.25
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About this wet end

Replace your worn spa pump wet end with this genuine Aqua-Flo by Gecko 48Y frame wet end, designed for 1.5HP pumps with 1-1/2" MBT (male buttress thread) connections on both suction and discharge ports. This OEM wet end fits Aqua-Flo FMHP series pumps and delivers the reliable performance your spa deserves. The 48Y frame size ensures proper motor alignment and optimal hydraulic efficiency.

At Bubbles Supply, we guarantee this wet end will fit your application exactly as specified. Every Aqua-Flo wet end ships same-day when ordered before our cutoff and comes backed by our comprehensive 1-year warranty for complete peace of mind. Before installation, always verify your existing wet end's frame size and connection threads match these specifications to ensure proper fit and performance.

Exact part number

91040720-000

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 1.5HP pump wet end
  • 48Y wet end
  • 91040720
  • Aqua-Flo FMHP wet end

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

Technical specifications

Horsepower
1.5 HP
Frame size
48Y
Port type
1-1/2" MBT suction and discharge

Plumbing notes

  • Port type: 1-1/2" MBT suction and discharge

Need help measuring? Email hello@bubblessupply.com with a photo of your existing plumbing.

Common symptoms this part fixes

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

  • Wet end leaking from volute or seal area
  • Low water flow or weak jets
  • Visible cracks or damage to pump housing
  • Impeller worn or broken causing reduced pressure
  • Water weeping around port connections
  • Pump runs but no water movement

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

Before you buy — quick checklist

  • Confirm your existing motor is a 48Y frame size — check the motor label
  • Verify your pump model is an Aqua-Flo FMHP series
  • Confirm both suction and discharge ports are 1-1/2" MBT (male buttress thread)
  • Inspect whether the issue is the wet end or the motor — motors are sold separately
  • Check that your existing impeller and seal plate are being reused or replaced separately if worn

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

Install difficulty: Medium — Some experience neededTypically 30–60 minutes

What's in the box

  • Wet end volute (housing)
  • Impeller
  • Seal plate
  • Shaft seal

If your order is missing any items listed above, contact hello@bubblessupply.com within 48 hours of delivery.

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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