Parts such as the Grommet (under): Protection, T/gate, Blind Plug 2, 15, Blind Plug 2, 20, Blind Plug, 25(burri are included in the Civic 2004 (4) 4dr Dx (ka) Grommet (under) parts fiche.
The Blind Plug 2, 15 is the cheapest item from this partsfiche.
The four Civic 2004 (4) 4dr Dx (ka) Grommet (under) component parts are all listed in this schematic.