A vehicle body assembly for on-line painting includes a polymeric fender and a polymeric bracket adhesively bonded to the fender. The bracket includes finger-like extensions received by an edge flange of the fender. The bracket includes a tab extension extending from an opening of the bracket engaging a support structure frame member for limited thermal expansion deformation of the fender. The adhesive a resin component and a curative component providing an initial partial cure for handling of the bracket and fender and a subsequent more fully-cured condition following high temperature baking in the on-line painting process. The assembly can also include fasteners securing the bracket to the fender to limit peeling separation of an adhesive connection provided by the adhesive.