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Union Tailpiece 417-5180 - Bubbles Supply

Union Tailpiece 417-5180

Part #: 417-5180

$5.10
In stock — ships today
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🔒 Secure checkout↩️ 30-day returns✅ 1-year warranty
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this union/fitting

The Waterway Union Tailpiece 417-5180 is a critical plumbing component designed for hot tubs and spas requiring a 2" male buttress thread to 3/4" socket connection with 1" spigot compatibility. This OEM-quality tailpiece ensures reliable water flow connections in your spa's circulation system, preventing leaks and maintaining proper hydraulic performance.

Built to Waterway's exacting standards, this union tailpiece delivers the exact fit guaranteed by Bubbles Supply, backed by our comprehensive 1-year warranty. We ship same-day to keep your spa running without extended downtime. The durable construction withstands constant exposure to heated water and spa chemicals, ensuring long-lasting performance in demanding spa environments. Always verify thread specifications and measurements match your existing plumbing configuration before installation to ensure proper fit and optimal seal integrity.

Exact part number

417-5180

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • buttress thread tailpiece
  • spa union fitting
  • union fitting
  • union tail piece

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

Common symptoms this part fixes

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

  • Dripping or weeping leak at union connection
  • Cracked or split tailpiece fitting
  • Threaded connection won't seal properly
  • Union spins but won't tighten down
  • Visible stress fractures in 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" male buttress thread — do not assume standard NPT
  • Verify the socket side accepts a 3/4" fitting and your plumbing run includes 1" spigot compatibility
  • Measure the existing tailpiece before removal — compare thread pitch and OD to avoid a mismatch
  • Check whether your union body (the mating half) is also Waterway — mixing brands on union pairs is a common source of leaks
  • Inspect the O-ring seat on the union body while you have it apart — replace the O-ring at the same time if worn

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

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

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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