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48Y Frame 1-1/2" MBT x 1-1/2" MBT Wet End 310-1130 1.00HP - Bubbles Supply

48Y Frame 1-1/2" MBT x 1-1/2" MBT Wet End 310-1130

Part #: 310-1130

$218.86
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About this wet end

This is the genuine Waterway wet end assembly designed for 48Y frame spa pumps with 1.0HP motor capacity. The wet end features dual 1-1/2" MBT (male buttress thread) connections for both suction and discharge, making it compatible with standard spa plumbing configurations. This OEM replacement part ensures your spa pump operates at peak performance with proper flow rates and hydraulic efficiency.

At Bubbles Supply, we guarantee this wet end will fit your 48Y frame pump exactly as intended, backed by our comprehensive 1-year warranty. Orders ship same-day to get your spa running quickly. When installing, ensure all O-rings are properly seated and lubricated, and verify the pump motor shaft alignment before reassembly to prevent premature wear.

Exact part number

310-1130

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 1.5 MBT wet end
  • 310-1130 wet end assembly
  • 48Y pump wet end
  • Waterway wet end

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

Technical specifications

Horsepower
1.0 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:

  • Cracked or leaking wet end housing
  • Pump leaking from impeller chamber
  • Low water flow due to worn impeller
  • Visible damage to volute or diffuser
  • Stripped or damaged MBT port threads
  • Pump moving water but losing prime repeatedly

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 for frame designation
  • Verify the pump is rated for 1.0 HP — do not mix wet ends and motors with mismatched HP ratings
  • Confirm both suction and discharge ports on your plumbing are 1-1/2" MBT — measure before ordering
  • Inspect the motor shaft for wear or corrosion before reusing it with a new wet end
  • Check whether your current wet end is single-speed or two-speed to ensure motor compatibility
  • Confirm this is a Waterway OEM part number — aftermarket wet ends may not seal correctly on Waterway motors

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, impeller, diffuser)
  • Seal assembly
  • Face seal 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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