How to Replace a Radiator in a Ford F-Series

Disconnect the negative battery cables before you begin. Then, locate the drain plug on the bottom of the radiator and rain the engine coolant into a resealable container.

Remove the fan, and if your Ford F-150 has an automatic transmission, disconnect the upper and lower fluid cooler fittings. Unfasten the screws on the front air deflector, and take off the air deflector. Remove the support brackets and the upper radiator hose, along with the transmission lines.

Disconnect the lower radiator hose and remove the radiator support brackets. Lift the radiator out of the engine compartment and remove the mounting insulator pads.

Put the new radiator on the insulator pads and install the radiator in the engine compartment. Tighten the bolts securely. Connect the lower radiator hose, and if your F-150 has an automatic transmission, connect the fluid cooler lines. Reinstall the fan assembly.

Fill the radiator with a blend of half engine coolant and half distilled water. Then, put the radiator cap on very loosely and start the engine. Let the engine run for several minutes to bleed air from the system.

Turn off the engine and top off the engine coolant blend. Attach the radiator cap securely.