Your Vehicle: 2001 Ford Escort ZX2 L4-2.0L DOHC VIN 3
 
Vehicle » Engine, Cooling and Exhaust » Cooling System » Heater Core » Description and Operation  
 
 
  Description and Operation  
 

  

The heater core consists of fins and tubes arranged to extract heat from the engine coolant and transfer the heat to air passing through the heater core housing.