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3" x 3/4" Tailpiece 42-2390 - Bubbles Supply

3" x 3/4" Tailpiece 42-2390

Part #: 42-2390

$19.48
In stock — ships today
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this union/fitting

The HydroQuip 3" x 3/4" Tailpiece (42-2390) is a premium 90-degree barbed plumbing fitting designed for spa and hot tub water circulation systems. This OEM replacement part connects your spa's plumbing lines at a right angle, featuring a 3-inch length with 3/4-inch barb connections for secure hose attachment in HydroQuip-equipped spas.

Engineered to HydroQuip's exact specifications, this tailpiece ensures reliable water flow and leak-free performance in your spa's plumbing system. At Bubbles Supply, we guarantee an exact fit for your application and offer same-day shipping on in-stock items, backed by our comprehensive 1-year warranty. The precision-molded construction and corrosion-resistant materials deliver long-lasting durability in hot water environments. Always verify your existing tailpiece dimensions before installation and ensure proper hose clamp placement for optimal sealing.

Exact part number

42-2390

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 3/4-inch barbed elbow
  • 90-degree barbed tailpiece
  • barb elbow fitting
  • spa plumbing barb fitting

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:

  • Slow drip or steady leak at a barbed hose connection
  • Cracked or split fitting causing loss of prime
  • Discolored or brittle tailpiece from chemical exposure
  • Hose pulling away from fitting under pressure
  • Weak water flow traced to a collapsed or damaged barb fitting

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

Before you buy — quick checklist

  • Measure your existing tailpiece — confirm the overall length is 3 inches and the barb diameter is 3/4 inch before ordering
  • Check the angle of the fitting — this is a 90-degree elbow, not a straight tailpiece
  • Confirm the fitting is a barbed connection, not threaded or slip-fit, to ensure hose compatibility
  • Inspect the hose inner diameter — it must match the 3/4-inch barb for a proper seal
  • Verify this is an OEM HydroQuip application — aftermarket or non-HydroQuip plumbing layouts may use different dimensions

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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