To avoid deterioration of strength of a lateral side wall when an induction port for cooling an engine is provided on an inner face side at an upper end side portion protruding upwards from a bonnet body of the lateral side wall, in an engine bonnet comprising a bonnet body, and a resin lateral side wall of a hollow structure connected with one end of the bonnet body.

An intake port 39 is formed on the inner side of an upper side portion 30a of the lateral side wall 30. The intake port 39 is communicated with the inside of the bonnet body 9a by a ventilation path 49 formed inside the lateral side wall 30. A sheet metal member 55 is connected across a pair of frame parts nipping the ventilation path 49 of the lateral side wall 30.