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56Y Frame 2" MBT x 2-1/2" MBT Wet End 310-1440 4.00HP - Bubbles Supply

56Y Frame 2" MBT x 2-1/2" MBT Wet End 310-1440

Part #: 310-1440

$227.65
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About this wet end

This Waterway Executive 56Y frame wet end delivers reliable performance for 4.0HP spa pumps requiring 2" MBT x 2-1/2" MBT connections. Engineered for high-performance spas and hot tubs, this OEM-quality wet end ensures optimal water flow and pressure while maintaining the durability Waterway is known for.

At Bubbles Supply, we guarantee this wet end will fit your spa exactly as specified, backed by our 1-year warranty and same-day shipping on in-stock orders. The 56Y frame design provides robust housing for demanding applications, making it ideal for larger residential and commercial spa installations. Verify your existing wet end's frame size and connection measurements before ordering to ensure proper fitment with your pump motor assembly.

Exact part number

310-1440

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 2x2.5 MBT wet end
  • 4HP wet end
  • 56Y wet end
  • Waterway Executive wet end

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

Technical specifications

Horsepower
4.0 HP
Frame size
56Y
Union size
2" MBT inlet x 2-1/2" MBT discharge

Plumbing notes

  • Union size: 2" MBT inlet x 2-1/2" 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:

  • Wet end cracked or visibly damaged
  • Pump leaking from volute housing
  • Low flow or loss of prime due to worn impeller
  • Grinding or cavitation noise from pump
  • Water bypassing impeller — no pressure at jets
  • Impeller seized or stripped

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

Before you buy — quick checklist

  • Confirm your existing wet end is 56Y frame — do not assume based on motor size alone
  • Measure your plumbing connections: inlet must be 2" MBT and discharge must be 2-1/2" MBT
  • Verify your motor shaft diameter and thread pitch are compatible with this wet end before ordering
  • Check whether your current pump is single-speed or two-speed — the wet end must match motor configuration
  • Inspect the existing diffuser and impeller before ordering — order replacement internals if worn

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
  • Diffuser
  • Face seal / 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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