; HomeHeavy Duty Truck PartsDifferentials & Differential PartsRear Rears (Tandem Rear or Single)Meritor/RockwellRD40-145Used Meritor/Rockwell RD40-145 Rear Rear (Tandem Rear or Single) Used Meritor/Rockwell RD40-145 Rear Rear (Tandem Rear or Single) Unfortunately this part is temporarily unavailable. View other Meritor/Rockwell RD40-145 Rear Rears (Tandem Rear or Single)