Abstract: A rear end portion of a bumper outer cover, an upper flange of a backing member and a retainer are fastened together, with bolts and nuts, in the places that are concealed by a concealing flange of the bumper outer cover and the front end of an engine hood. The rear end portion, upper flange and retainer are formed with relief cuts in the place opposing to retractable head lamps so as to not only provide an increased clearance between a bumper assembly and the retractable head lamps but remove part of the rear end portion and its corresponding parts of the retainer and the upper flange that are otherwise exposed to view when the head lamps are moved to their projected positions.

Abstract: A bumper main body has a pair of recesses into each of which a blank cap is disposed and fixedly and releasably held at its clipping portions by a first arm of a U-shaped leaf nut mounted on each of projections. The blank caps each have an outer surface flush with an outer surface of the bumper main body and a blind hole aligned with one of internally threaded flanged holes of the U-shaped leaf nut. The blind hole has a thin-walled closed end which is removed when a fastening bolt is screwed through the blind hole into one of the flanged holes to fasten a license plate to the bumper main body. The blind hole is alignable with the other of the flanged holes when the clipping portions are reversely attached to the leaf nut.