; HomeHeavy Duty Truck PartsDifferentials & Differential PartsFront Rears (Tandem Front)Meritor/RockwellQHDUsed 1979 ROCKWELL QHD Front Rear (Tandem Front) Used 1979 ROCKWELL QHD Front Rear (Tandem Front) Unfortunately this part is temporarily unavailable. View other Meritor/Rockwell QHD Front Rears (Tandem Front)