F 250 4WD LD Pickup V8-281 4.6L VIN W EFI (1997)
Heater Core Case: Description and Operation
The heater system is blended air system, receiving outside air through the air inlet, which is connected to the upper cowl. Air is directed through and/or
around the heater core, mixed and discharged through outlets in the plenum assembly to the floor, panel or defrost nozzles.
