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Miata NA (untested compatibility) Drain Plug Grommet Circular 20mm
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Most interior drain holes and some in the trunk use a 20mm plug. Looks like OEM but modified for print tolerances. 20mm
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- Source
- Printables
- Category
- Automotive
- License
- Creative Commons — Public Domain
Only tested on the NA Miata.
Couldn't find any cheap solution to missing plugs, and none of them looked OEM.
Print in TPU.
10/15/25 - Updated to v6: Easier press fit and resized to 19.78. beveled inside top edge should hold it in place and give room to remove with plug remover. Shaft height also resized to 2.5.