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48Y Frame 1-1/2" MBT x 1-1/2" MBT Wet End 91040690-000 0.75HP - Bubbles Supply

48Y Frame 1-1/2" MBT x 1-1/2" MBT Wet End 91040690-000

Part #: 91040690-000

$205.25
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About this wet end

This Aqua-Flo by Gecko 48Y frame wet end delivers reliable performance for spa main pump systems requiring 3/4 HP output. The 1-1/2" MBT (male buttress thread) connections on both suction and discharge sides ensure secure plumbing integration in your hot tub's circulation system. Built to OEM specifications, this wet end assembly maintains the precise hydraulics your spa was designed for.

When your existing wet end fails or shows signs of wear, this direct replacement restores optimal water flow and pressure. We guarantee exact fit compatibility and back every purchase with our 1-year warranty. Most orders ship same day, getting your spa back online fast. Before installation, verify your pump's frame size matches the 48Y configuration and confirm the MBT thread sizing aligns with your existing plumbing connections.

Exact part number

91040690-000

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 3/4 HP wet end
  • 48 frame wet end
  • 91040690
  • Aqua-Flo 48Y wet end

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

Technical specifications

Horsepower
0.75 HP
Frame size
48Y

Common symptoms this part fixes

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

  • Wet end leaking at volute or seal plate
  • Low water flow or weak jet pressure
  • Pump motor runs but no water movement
  • Visible cracks or damage to pump housing
  • Impeller seized or broken
  • Spinning noise with no flow output

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

Before you buy — quick checklist

  • Confirm your existing pump motor is a 48Y frame — check the motor label or measure the motor body
  • Verify your plumbing connections are 1-1/2" MBT (male buttress thread) before ordering
  • Check that your current wet end is 3/4 HP — horsepower is stamped on the motor nameplate
  • Inspect whether the motor itself is functional before replacing only the wet end
  • Note whether this is a single-speed or two-speed pump setup — the wet end must be compatible with the motor's rotation direction and shaft size
  • Have the OEM part number from your old wet end or pump label on hand to confirm cross-reference

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

  • Wet end assembly (volute and impeller)
  • Seal plate
  • Shaft seal
  • Mounting hardware

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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