In this schematic the "Clamp D 12.5 Tube" is used most often.
Parts such as the Water Hose: Pipe Comp,brthr, Hose,brthr In, Tube,17x44, Clamp,brthr Hose are included in the Civic 2004 (4) 3dr Si Side Srs (ka) Water Hose parts fiche.
Check out any of the thirteen Water Hose components enlisted.