1996 Honda Civic 1.6L 4 Cyl. 1998-2000 Honda Civic 1.6L 4 Cyl CNG. 1997-2000 Honda Civic 1.6L 4 Cyl GAS. Heater cores transfer heat from the engine's cooling system to the inside of the vehicle. Thermostat housing and water outlets are connections that transfer coolant between the radiator and the engine block and generally house the thermostat.
