PROBLEM TO BE SOLVED: To provide an engine part structure for a work vehicle which is excellent in inhalation capacity of a radiator fan and exhaust capacity of an exhaust fan so that overheat of an engine is suppressed and frequency of maintenance/inspection work is decreased.SOLUTION: An engine part structure for a work vehicle comprises: an engine which is arranged in an engine room a radiator which cools cooling water of the engine a cooling fan 20 for suction of outer air and an exhaust fan 30 for exhaustion which are arranged between the engine and the radiator capable of being switched between a drive state and a stop state drive state switching means 45 in which the exhaust fan 30 is switched to the stop state when the cooling fan 20 is in the drive state, and the exhaust fan 30 is switched to the drive state when the cooling fan 20 is in the stop state. The drive state switching means 45 is arranged outside of a rotation locus of the cooling fan 20 when viewed from an axial direction of a first rotation axis 24 supporting the cooling fan 20.SELECTED DRAWING: Figure 20
