2015 Meritor/Rockwell RS23-161, Truck Tractor, Rear Rears (Tandem Rear or Single), Fits to: Freightliner Cascadia 113, (Used) 2015 Freightliner Cascadia 113, COMPLETE DIFFERENTIAL GEARS ONLY- Make: Meritor/Rockwell, Model: RS23-161, Part Number: A8-3200F2138D-321, Serial Number: FOR02812594, ASH07338589, Ratio: 3.21, Capacity: 23,000 Lbs, Hub Bolts: 10, Brake Type: Disk, For more information about this item, give us a call. We ship Worldwide! (CRG HEAVY TRUCK PARTS) 929 W PULASKI HWY, ELKTON, MD 21921, Ratio 3.21, Serial# FOR02812594, Casting# FOR02812594 1FUBGBDV8FLGH3333