Abstract: An air flow redirection device for a snow plow assembly mounted on a vehicle comprises an air flow guide member mounted on the mounting assembly for a snow plow blade mounted relative and superior to the snow plow blade. The guide member is positioned to redirect air from and above the snow plow blade down toward a radiator of a motor vehicle. Air flow guide member includes an upward-extending air-engaging front foil, a downward extending rear foil, and an intermediate panel extending between the upward extending air engaging front foil and the downward extending rear foil, all components being integral. Bracket members mount the air flow guide member independent of the snow plow blade such that the orientation of the air flow guide member is independent of motion of the snow plow blade. Other features include transparent guide members and pivotal mounting bracket assemblies.