HEAD COVER FOR ENGINE

There is provided a head cover for an engine improved so as to reduce the cost by reducing the mold cost by making it possible to standardize head covers for an engine with a separator interior specification and an engine with a separator exterior specification. [0002] The head cover for an engine includes a gas passage W in the head cover, a gas outlet 20 formed on a head cover wall 3a at a terminal end portion of the gas passage W in the head cover, a gas intermediate outlet portion 18 formed in the head cover wall 3a so as to face space S inside the head cover except the gas passage W in the head cover, and a gas intermediate inlet portion 19 formed in the head cover wall 3a so as to face the gas passage W in the head cover, in which an opening specification in which through holes 18a, 19a penetrating the head cover wall 3a are formed and a closing specification in which the through holes 18a, 19a are not formed can be selected for the gas intermediate outlet portion 18 and the gas intermediate inlet portion 19.