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48Y Frame 1-1/2" MBT x 1-1/2" MBT Wet End 310-5070 0.13HP - Bubbles Supply

48Y Frame 1-1/2" MBT x 1-1/2" MBT Wet End 310-5070

Part #: 310-5070

$207.43
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About this wet end

The Waterway 48Y Frame Wet End (310-5070) is a genuine OEM replacement component designed for Waterway Uni-Might circulation pumps in residential spas and hot tubs. This 1/8 HP wet end features dual 1-1/2" MBT (male buttress thread) connections and fits the compact 48Y frame configuration commonly found in energy-efficient circulation systems.

Built to Waterway's exacting standards, this wet end delivers reliable water flow for continuous filtration and heating circulation. At Bubbles Supply, we guarantee an exact fit for your Waterway circ pump with same-day shipping on in-stock items and back every part with our comprehensive 1-year warranty. Verify your existing pump's frame size and connection threading before ordering to ensure proper fitment with your spa's plumbing configuration.

Exact part number

310-5070

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 310-5070 wet end
  • 48Y circ pump wet end
  • Waterway Uni-Might wet end

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

Technical specifications

Horsepower
1/8 HP (0.13 HP)
Frame size
48Y
Speed
Single-speed
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:

  • No water flow from circulation pump
  • Spa displaying DR, FL1, FLO, or ICE error codes
  • Weak or reduced flow through filtration system
  • Visible cracks or leaking from existing wet end housing
  • Impeller damaged or seized causing loss of prime

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

Before you buy — quick checklist

  • Confirm your existing pump is a Waterway Uni-Might on a 48Y frame — check the label on the motor body
  • Verify your plumbing connections are 1-1/2" MBT (male buttress thread) — do not confuse with NPT or slip fittings
  • This is the wet end only — your existing 48Y motor must be in working condition before swapping the wet end
  • Inspect the motor shaft for corrosion or damage before reusing it with this new wet end
  • Check that the existing volute O-ring seating surface on your motor is clean and undamaged

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

Install difficulty: Medium — Some experience neededTypically 30–60 minutes

What's in the box

  • Waterway 48Y wet end assembly (310-5070)
  • Impeller
  • 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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