Abstract: A direct drive radiator cooling fan hub replaces functionality of the electronic thermal clutch fan of a vehicle in order to eliminate an overheating engine that is caused due to extreme weather conditions, higher elevations, or higher/extreme towing capacities. The direct drive radiator cooling fan hub includes a cylindrical body, at least one flange, a plurality of fan blade attachments, and a fan pully attachment nut. The cylindrical body, the at least one flange, and the fan pully attachment nut are concentrically positioned with each other as the at least one flange is terminally connected to the cylindrical body. The fan pully attachment nut is terminally connected to the at least one flange, opposite of the cylindrical body. The plurality of fan blade attachments is radially positioned around the rotational axis and traverses into the cylindrical body, adjacent to the at least one flange.