2016 Meritor/Rockwell RS23-161, Truck Tractor, Rear Rears (Tandem Rear or Single), Fits to: Freightliner Cascadia 125, (Used) 2016 Freightliner Cascadia 125, DIFFERENTIAL GEARS ONLY- Part Number: S11-19891-321, Serial Number: FOR03135603, Make: Meritor, Model: RS23-161, Ratio: 3.21, Capacity: 23,000 Lbs, 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# FOR03135603, Casting# FOR03135603 1FUBGDDV7GLGW6259