Parts such as the Water Pump-thermostat: Rub,thermo Mtg, Case,comp Thermo, Bolt,flange 6x75, Bolt,flang are included in the Civic 1991 (m) 4dr Ex (ka,kl) Water Pump-thermostat parts fiche.
The most reasonably priced component used on the Civic 1991 (m) 4dr Ex (ka,kl) Water Pump-thermostat is the Bolt,flange,6x20.
The Water Pump-thermostat is made up of components including this Pump Comp,water which is the most expensive.