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Heater Union Tailpiece 417-5060 - Bubbles Supply

Heater Union Tailpiece 417-5060

Part #: 417-5060

$4.62
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this union/fitting

The Waterway 417-5060 heater union tailpiece is an essential OEM replacement component for spa heaters requiring a 2" male buttress thread (MBT) to 2" slip connection. This precision-engineered fitting creates a secure union between your heater assembly and plumbing system, featuring an integrated O-ring for reliable watertight sealing. When your spa's heating system develops leaks or connection issues, this genuine Waterway tailpiece restores proper flow and prevents costly water damage.

Built to exact OEM specifications, this heater union tailpiece delivers the guaranteed fit your spa deserves. Bubbles Supply ships same-day for minimal downtime, and every part comes with our comprehensive 1-year warranty for complete peace of mind. The durable construction withstands continuous thermal cycling and chemical exposure that defines spa environments. Verify your existing heater's connection specifications match the 2" MBT x 2" slip configuration before installation to ensure proper fitment.

Exact part number

417-5060

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 2-inch heater tailpiece
  • heater union end
  • Heater union tail piece
  • MBT union fitting
  • union tailpiece

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

Technical specifications

Union size
2 inch
Port type
2" Male Buttress Thread (MBT) x 2" Slip

Plumbing notes

  • Union size: 2 inch
  • Port type: 2" Male Buttress Thread (MBT) x 2" Slip

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:

  • Leak at heater union connection
  • Water dripping from heater manifold fitting
  • Cracked or brittle union tailpiece
  • Unable to create watertight seal at heater inlet or outlet
  • Stripped or damaged MBT threads on existing tailpiece

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

Before you buy — quick checklist

  • Confirm your existing tailpiece uses a 2" MBT (Male Buttress Thread) thread pattern — buttress threads are NOT the same as standard pipe threads
  • Verify the spa-side plumbing connection is 2" slip (socket) to match this fitting
  • Inspect the mating union nut and O-ring seat on your heater — replace the O-ring if worn or deformed
  • Check whether your heater uses a 2-piece union assembly; this tailpiece is the heater-side half only
  • Identify whether your existing tailpiece is threaded directly into the heater manifold or uses a flange-style mount before ordering

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

Install difficulty: Easy — DIY-friendlyTypically 15-30 minutes

What's in the box

  • Heater union tailpiece
  • 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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