🔧 What this part is
Waterway Plastics Tailpiece, 1-1/2"mbt x 1-1/2"mpt, part number 417-4061. A tailpiece is the short fitting that joins a pump, heater or filter union to the pipework.
Size as listed: 1-1/2"; connections: male pipe thread and male buttress thread.
✅ Check before you order
- Measure the part you are replacing – this one is listed as 1-1/2".
- The connections have to match: male pipe thread and male buttress thread.
- The number on the old part should read 417-4061, 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.
🔧 Parts and fittings for this
| Part | Our part number | Availability | |
|---|---|---|---|
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Silicone Based Lubricant 1oz 00150 | 00150 | 343 in stock |
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O-Ring Chart, Aladdin | MG1 | 17 in stock |
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Split Nut, Waterway, 1-1/2", with screws | 400-5491 | 100 in stock |
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Split Nut, 1-1/2" Buttress Thread, Heater Union | 415-4021 | 16 in stock |
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Heater Split Nut | -1/2"FBT, Large Flange w/ Screws | 0121108015 | 140 in stock |








