Abstract: Fast moving off-highway vehicles, such as trucks, may have restricted operating capability in rainy, wet weather because of foreign material, such as water, being ingested into their exposed air cleaner and thus their engines. To operate in these conditions it is desirable that their air cleaner be adapted to include an air inlet deflector assembly. The deflector assembly includes a plurality of formed shields and a splash deflector. The shields overlap the inlet ports and in combination with the splash deflector define a labyrinth path for air entering the air cleaner. The splash deflector includes downwardly inclined blocking edges to block and redirect material away from the inlet passages.