2017 Meritor/Rockwell RS23-161, Truck Tractor, Rear Rears (Tandem Rear or Single), Fits to: Freightliner M2 112 Medium Duty, (Used) 2017 Freightliner M2 112 Medium Duty, COMPLETE DIFFERENTIAL GEARS ONLY- Part Number: S11-15937-430, Serial Number: FOR03663026, Make: Meritor, Model: RS23-161, Ratio: 4.30, Capacity: 21,000 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 4.30, Serial# FOR03663026, Casting# FOR03663026 1FUBC4CY7HHHV5664