The most reasonably priced component used on the Civic 1988 (j) 4dr Lx (ka,kl) Water Pump-thermostat is the Bolt,flange,6x20.
The twenty-two Civic 1988 (j) 4dr Lx (ka,kl) Water Pump-thermostat component parts are all listed in this schematic.
Some items from this specific schematic: Cover,thermo, Bolt,flange 6x75, Thermostat, Joint, Tube.