If you have a 1999-2000 header which has a female threaded port, then you need the male plug that we sell elsewhere on this site.
*In California this product is only for racing vehicles, which may never be used upon a highway.
MIATA NA/NB 1994-1997
MIATA NA/NB 1994-1997
MIATA NA/NB 2001-2005
MIATA NA/NB 1990-2005
MIATA NA/NB 1999-2005
Works great, not too much to it. Good quality weld.
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