'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.'

Global Parts HVAC Heater Core

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.

hvac heater core