🔧 What this part is
Magic Plastics Split Nut, 2" Buttress Thread, Heater Union, part number 0121108020. The split nut clamps a union or heater connection together and is the part that usually cracks or seizes.
Size as listed: 2"; connections: union.
✅ Check before you order
- Measure the part you are replacing – this one is listed as 2".
- The connections have to match: union.
- The number on the old part should read 0121108020, 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.
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