Parts such as the Water Hose: Hose,racv In, Hose,racv Out, Clamp D 12.5 Tube are included in the Civic 2003 (3) 4dr Lx (ka) Water Hose parts fiche.
The Honda WATER HOSE has three products enlisted in the schematic.
The lowest price component in this Water Hose parts-list fiche is the Clamp D 12.5 Tube.