; HomeHeavy Duty Truck PartsDifferentials & Differential PartsRear Rears (Tandem Rear or Single)Meritor/RockwellRT40-145Used 2006 Meritor/Rockwell RT-40-145 Rear Rear (Tandem Rear or Single) Used 2006 Meritor/Rockwell RT-40-145 Rear Rear (Tandem Rear or Single) Unfortunately this part is temporarily unavailable. View other Meritor/Rockwell RT40-145 Rear Rears (Tandem Rear or Single)