The most reasonably priced component used on the Civic 1998 (w) 4dr Ex (ka) Grommet is the Blind Plug 7.
The Grommet assembly is constructed from several parts from which the Grom, Drain Hole is the most expensive.
This Grommet diagram displays the required parts for the Civic 1998 (w) 4dr Ex (ka) Grommet.