Abstract: A cooling system assembly is provided for an off-road vehicle having an engine surrounded at least in part by an engine enclosure. The cooling system assembly includes a heat exchanger having an air intake face. The heat exchanger is coupled to the engine for cooling the engine. The engine enclosure includes an end face lying substantially in a plane disposed substantially perpendicular to a longitudinal axis of the vehicle and first and second side faces, each of said first and second side faces lying substantially in a plane disposed substantially parallel to the longitudinal axis of the vehicle. The enclosure has an air intake located at least partially on the end face and at least one of the first and second side faces. An inner wall forms a baffle on at least one of the faces for directing air from the air intake to the heat exchanger air intake face.