Of all the components used in this assembly the Switch Heater is the most expensive.
On this parts fiche the Washer, Heater Lever is the most specified component.
Parts such as the Heater Lever: Lever, Valve Control, Lever, Hot Air Control, Cable Cool Contl, Screw Pan 2.6x6 are included in the Civic Wagon 1977 Wgn (kh,ka,kl) Heater Lever parts fiche.