🔧 What this part is
Waterway Plastics Tailpiece, 2"bt x 2"mpt, for Split Nut, part number 417-5140. The split nut clamps a union or heater connection together and is the part that usually cracks or seizes.
Size as listed: 2"; connections: male pipe thread.
✅ Check before you order
- Measure the part you are replacing – this one is listed as 2".
- The connections have to match: male pipe thread.
- The number on the old part should read 417-5140, or the maker’s equivalent.
- Not sure? Send us a photo of the old part and any number on it, and we will tell you whether this is the one.
📌 Also on this listing
2″mpt threaded tailpiece
🔧 Parts and fittings for this
| Part | Our part number | Availability | Price | ||
|---|---|---|---|---|---|
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Split Nut, 2" Buttress Thread, Heater Union | 0121108020 | 603 in stock | $4.81 | Add to cart |
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Generic PTFE Teflon/Plumbers Thread Seal Tape A05-0265 | A05-0265 | 214 in stock | $1.27 | Add to cart |
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Waterway O-Ring/Gasket 711-4030 | 711-4030 | 4402 in stock | $0.73 | Add to cart |
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Waterway Gasket 711-4010 | 711-4010 | 1201 in stock | $1.92 | Add to cart |













