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48Y Frame 2" MBT x 2" MBT Wet End 310-2470 2.50HP - Bubbles Supply

48Y Frame 2" MBT x 2" MBT Wet End 310-2470

Part #: 310-2470

$101.30
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Fits these systems

Waterway

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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

Before you buy — quick checklist

  • Confirm your existing motor is a 48Y frame — check the motor label for frame designation
  • Verify your current wet end uses 2" MBT (male buttress thread) connections, not slip or union fittings
  • Confirm motor horsepower is 2.5 HP before ordering — mismatched wet ends and motors cause premature failure
  • Check whether your pump is single-speed or two-speed, as impeller selection affects compatibility
  • Inspect the existing diffuser and impeller — these are separate wear items that may also need replacement
  • Make sure your plumbing unions will re-mate correctly to 2" MBT before draining the spa

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

Exact part number

310-2470

Save this for ordering or warranty claims

Technical specifications

Horsepower
2.5 HP
Frame size
48Y

Common symptoms this part fixes

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

  • Weak or no water flow from jets
  • Pump housing cracked or leaking at the volute
  • Impeller damaged or seized causing no circulation
  • Loud grinding or cavitation noise from pump
  • Water leaking at pump inlet or outlet connections
  • Pump shaft seal failure causing water intrusion into motor

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

About this wet end

This Waterway EX2 wet end is designed for 48Y frame spa pumps with 2.5HP motors, featuring 2" male buttress thread (MBT) inlet and outlet connections. As an OEM replacement part, it delivers the exact specifications your spa pump requires for reliable water circulation and filtration performance.

Built to Waterway's exacting standards, this wet end ensures precise fit and optimal flow rates for your spa system. At Bubbles Supply, we guarantee exact fit compatibility and back every wet end with our comprehensive 1-year warranty. Most orders ship same-day from our Canadian warehouse, getting your spa running quickly. Before installation, verify your pump's frame size and connection measurements match the 48Y frame and 2" MBT specifications to ensure proper fitment.

Also known as / Replaces

This part replaces or is interchangeable with:

  • 2" MBT wet end
  • 48Y wet end
  • EX2 pump housing
  • Waterway EX2 wet end

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

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

What's in the box

  • EX2 wet end assembly (volute/housing)
  • Face plate o-ring
  • Seal assembly (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.

AI Fitment Assistant

Tell us your spa model and we will confirm this part fits before you buy.

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