Abstract: The invention comprises an air deflection apparatus for a truck of the cab-over engine type of construction having a dual pair of flanges adapted to be mounted to the front face of the truck with the flanges at an acute projecting angle on each side of the radiator on the front face of the truck so that the flanges provide a tapered surface on the front face to deflect air off at an angle to the side of the truck. The tapered surfaces provide less resistance to the flow of air against and past the truck during forward movement of the truck than there would be with the conventional front face of such a truck which is perpendicular to the air flow and this thereby increases the efficiency and mileage of the truck by the reduced power required because of there being less air resistance to the truck movement.