A wheel loader (100) is provided with an engine compartment (2), a urea water injection device (13), a second side plate (83), a guiding member (23), and a suction part (91). The second side plate (83) has a first outdoor air intake port (831). The guiding member (23) is configured to guide outdoor air sucked in through the first outdoor air intake port (831) onto the urea water injection device (13) . The suction part (91) sucks air into the engine compartment (2). The urea water injection device (13) is disposed within an air flow produced between the suction part (91) and the guiding member (23).