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Heater Split Nut 012110802 - Bubbles Supply

Heater Split Nut 012110802

Part #: 012110802

$2.20
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 Magic Plastics Heater Split Nut (012110802) is a premium 2" FBT heater union component designed for hot tubs and spas equipped with Magic Plastics heating systems. This large flange split nut with integrated screw provides a secure, leak-proof connection for your spa's heater assembly, ensuring reliable water heating performance.

Engineered to OEM specifications, this split nut delivers the exact fit guaranteed you need for professional-grade repairs. At Bubbles Supply, we stock authentic Magic Plastics parts with same-day shipping and back every component with our comprehensive 1-year warranty for complete peace of mind. When installing, ensure proper thread engagement and hand-tighten the split nut before using the integrated screw to achieve the manufacturer's specified torque for optimal seal integrity.

Exact part number

012110802

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Also known as / Replaces

This part replaces or is interchangeable with:

  • 2-inch FBT split nut
  • heater union nut
  • heater union split nut
  • large flange split nut

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

Technical specifications

Union size
2 inch FBT (Female British Thread)

Plumbing notes

  • Union size: 2 inch FBT (Female British Thread)

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:

  • Heater union leaking at the nut
  • Cracked or broken split nut on heater assembly
  • Slow drip at heater inlet or outlet connection
  • Split nut won't tighten or hold seal

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

Before you buy — quick checklist

  • Confirm your existing heater union is a 2-inch FBT style before ordering
  • Inspect both the split nut and the union body — a damaged body will still leak with a new nut
  • Check that the integrated screw and threads on your union body are intact and undamaged
  • Verify this is a Magic Plastics union — other brands use different thread patterns that may not interchange
  • Note whether the leak is at the nut or the o-ring — you may need a new o-ring as well

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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