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48Y Frame 2" MBT x 2" MBT Wet End 310-1140SD 1.50HP - Bubbles Supply

48Y Frame 2" MBT x 2" MBT Wet End 310-1140SD

Part #: 310-1140SD

$227.65
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About this wet end

The Waterway 48Y Frame 2" MBT x 2" MBT Wet End (310-1140SD) is a premium OEM replacement wet end designed for 1.5HP spa pumps using the standard 48Y frame configuration. This genuine Waterway Hi-Flo wet end features 2-inch male buttress thread (MBT) connections on both intake and discharge ports, making it compatible with most residential spa circulation systems requiring this specific frame size and horsepower rating.

Built to Waterway's exacting OEM standards, this wet end delivers the exact fit and performance your spa demands. At Bubbles Supply, we guarantee precise fitment and back every wet end with our comprehensive 1-year warranty. Most orders ship the same day for minimal downtime. Before installation, verify your existing pump's frame type and connection threading match the 48Y frame and 2" MBT specifications to ensure proper compatibility with your spa's plumbing configuration.

Exact part number

310-1140SD

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Also known as / Replaces

This part replaces or is interchangeable with:

  • 1.5HP Waterway wet end
  • 310-1140SD wet end
  • 48Y wet end
  • Waterway Hi-Flo wet end

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

Technical specifications

Horsepower
1.5 HP
Frame size
48Y
Port type
2" MBT intake x 2" MBT discharge

Plumbing notes

  • Port type: 2" MBT intake x 2" MBT 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:

  • Pump housing cracked or leaking at volute
  • Weak or low water flow despite motor running normally
  • Visible impeller damage causing noise or cavitation
  • Wet end seal failure causing water intrusion into motor
  • Spa jets losing pressure gradually over time

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

Before you buy — quick checklist

  • Confirm your existing pump uses a 48Y frame — check the label on the motor housing
  • Verify both intake and discharge ports are 2" MBT threading before ordering
  • Confirm motor horsepower rating is 1.5HP on your pump label
  • Inspect whether you need just the wet end or the full pump assembly — the motor is sold separately
  • Check the condition of your existing pump shaft seal before reinstalling — replace if worn
  • Measure existing plumbing unions to confirm they mate correctly with 2" MBT connections

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 housing (volute)
  • 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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