; HomeHeavy Duty Truck PartsDifferentials & Differential PartsFront Rears (Tandem Front)Meritor/RockwellRD20-145Reconditioned ROCKWELL RD20145 Front Rear (Tandem Front) Reconditioned ROCKWELL RD20145 Front Rear (Tandem Front) Unfortunately this part is temporarily unavailable. View other Meritor/Rockwell RD20-145 Front Rears (Tandem Front)