The thirty-five 115 Etk 1985 Bottom Cowling component parts are all listed in this schematic.
Parts such as the Bottom Cowling: Grommet, Coller (6e5), Plate, Fitting, Grommet (6e5) are included in the 115 Etk 1985 Bottom Cowling parts fiche.
In this schematic the "Bushing (697)" is used most often.