; HomeHeavy Duty Truck PartsDifferentials & Differential PartsRear Rears (Tandem Rear or Single)Meritor/RockwellRS20-145Used ROCKWELL RS20-145 Rear Rear (Tandem Rear or Single) Used ROCKWELL RS20-145 Rear Rear (Tandem Rear or Single) Unfortunately this part is temporarily unavailable. View other Meritor/Rockwell RS20-145 Rear Rears (Tandem Rear or Single)