2.4 - Radiator Configuration

Two cooling system configurations are found on vehicles today. Depending on the vehicle underhood configuration the radiator may be a crossflow or downflow configuration.

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Crossflow

The crossflow configuration has the main core tubes and fins in a horizontal layout. Coolant enters one of the side tanks, cools the liquid through the core and exits via the other tank.

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Downflow

The downflow configuration has the main core tubes and fins in a vertical layout. Coolant enters the upper tank, cools the liquid through the core and exits via the lower tank.