To provide an over fender for an automobile, making its assembly capable by following up to a shape in a side of various car bodies, lessening even limitation of a metal mold structure of the over fender, which can prevent coming off of an engaging part from and its inferior mating with the car body.

A leg part 1a protruded from a back surface side of an over fender 1 and a mounting seat 1b are previously molded so as to make almost a linear shape with this leg part 1a through a thin thickness part 1c, and its part is bent so that the mounting seat 1b can be bent almost in a right angle direction to the leg part 1a.