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48Y Frame 1-1/2" MBT x 1-1/2" MBT Wet End 91040840-000 2.00HP - Bubbles Supply

48Y Frame 1-1/2" MBT x 1-1/2" MBT Wet End 91040840-000

Part #: 91040840-000

$205.25
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About this wet end

The Aqua-Flo by Gecko 48Y Frame Wet End (91040840-000) is a genuine OEM replacement component designed for 2.0HP main pumps in residential spas and hot tubs. This wet end features dual 1-1/2" MBT (male buttress thread) connections and the standard 48Y frame configuration, making it compatible with Aqua-Flo FMCP circulation pumps across multiple spa brands.

Built to Aqua-Flo's exacting specifications, this wet end delivers reliable water circulation and filtration performance. At Bubbles Supply, we guarantee an exact fit for your spa system and offer same-day shipping on in-stock parts, plus our comprehensive 1-year warranty for complete peace of mind. Before installation, always verify your existing wet end's frame size and connection threading to ensure proper fitment and optimal pump performance.

Exact part number

91040840-000

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 48Y Wet End
  • 91040840
  • Aqua-Flo FMCP Wet End

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

Technical specifications

Horsepower
2.0 HP
Frame size
48Y
Port type
1-1/2" MBT (Male Buttress Thread) inlet and outlet

Plumbing notes

  • Port type: 1-1/2" MBT (Male Buttress Thread) inlet and outlet

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:

  • Pump motor runs but no water flow
  • Wet end leaking from volute or seal area
  • Low pressure or weak jets
  • Loud grinding or cavitation noise from pump
  • Visible cracks or damage to pump housing
  • Water leaking at pump plumbing connections

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

Before you buy — quick checklist

  • Confirm your existing wet end is a 48Y frame — do not assume based on HP alone
  • Verify both inlet and outlet connections are 1-1/2" MBT threading before ordering
  • Check the motor frame size stamped on your existing motor label
  • Confirm this is an FMCP series pump — the wet end is not universal across all Aqua-Flo pump families
  • Inspect the motor shaft seal before reinstalling — replace it if worn to avoid repeat leaks

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

Install difficulty: Medium — Some experience neededTypically 45-90 minutes

What's in the box

  • 48Y frame wet end assembly
  • Volute o-ring

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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