On this parts fiche the Clamp D 12.5 Tube is the most specified component.
A sample from the products for the Water Hose include: Clamp, Water Hose 21, Hose,bypass Out, Hose B,brthr Heat, Hose,th Body Out.
This schematic depicts all components used in the Civic 1990 (l) 4dr Dx (ka,kl) Water Hose partslist.