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 Control Valve-Heater Valve 4 Seasons 74004 fits 94-99 Toyota Celica
HVAC Heater Control Valve-Heater Valve 4 Seasons 74646 fits 01-03 Toyota Sienna
HVAC Heater Control Valve-Heater Valve 74010
Carquest 74002 HVAC Heater Control Valve-Heater Valve 4 Seasons New In Box
HVAC Heater Control Valve-Heater Valve 4 Seasons 74678
HVAC Heater Control Valve-Heater Valve 4 Seasons 74859
