Fuel filler door assembly

This invention relates to motor vehicle fuel delivery systems and, more particularly, to an improved fuel filler door assembly. A fuel filler door assembly is provided for a motor vehicle facilitating rapid and inexpensive installation. Installation is accomplished by passing a tubular sleeve main body portion of a housing of the fuel filler door assembly through an aperture in a lip in an outer panel of the vehicle to pass circumferentially spaced keys on the sleeve through circumferentially spaced keyways provided in the lip, pass an aperture in an inner end wall of the housing over the free end of the filler tube of the vehicle fuel tank to seat the inner wall on a flange carried by the filler tube, and seat a flange provided on an outer end of the housing on the outer panel lip; turning the housing to move the keys under the panel lip and trap the lip between the flange and the keys; and passing a screw fastener through the end wall of the housing for engagement with the filler tube flange.