Engine

The end portion of the cylinder head includes a first end portion, and a first depressed portion depressed in a circular arc shape from the first end portion. The end portion of the cylinder head cover includes a second end portion and a second depressed portion depressed in a circular arc shape from the second end portion. A first virtual plane through the first end portion and a second virtual plane through the second end portion overlap with the camshaft. A mounting member includes a gasket and a collar member. The gasket includes a ring portion and the main body. The ring portion, having a circular form, is arranged between the first depressed portion and the second depressed portion. The main body is arranged between the first end portion of the cylinder head and the second end portion of the cylinder head cover. The collar member, a tubular shaped member, is inserted in the opening of the ring portion. The water pump is installed in the collar member. The ring portion is integrated with the collar member.