Truck rear hubs AA-1113-F2 and AA 1114-F2 are now being used in 100% production. In these hubs the bearing sleeve is made integral with the hub. This construction eliminates the AA-1236-C rear hub sleeve and the A-23225 sleeve retainer rivet. The AA-1113-F2 and AA-1114-F2 hubs can be used interchangeably with the AA-1113-Fl and AA-1114-Fl hubs which have the sleeves installed.