The present invention relates to a utility vehicle 10. The utility vehicle 10 includes a frame 12; ground joint components 14, 16 supporting the frame; an operator chamber 60; a power system 30; a rear utility base 1832 located behind the operator chamber; a groove frame piece 2300 positioned adjacent to the upper edge of the rear utility base and coupled to the rear utility base in a dismountablemanner; and a pipeline 828 provided with a first end part coupled to the power system and a second end part coupled to the groove frame piece, wherein air is conveyed to the power system through thegroove frame piece and the pipeline to the power system.