An agricultural vehicle is disclosed having an engine compartment. A cooling package is mounted near a forward end of the engine compartment, the cooling packaging including heat exchangers that are movable relative to one another between an operating position and a cleaning position. The engine is mounted near a rearward end of the engine compartment. The engine is fitted with an intake air duct leading from the engine to the forward end of the engine compartment to allow intake air to be admitted into the engine while bypassing the cooling package and thereby avoiding the engine intake air being heated. The intake air duct is articulated so as not to interfere with the movement of the heat exchangers of the cooling package between the operating and cleaning positions.
