2015 Meritor/Rockwell RS23-161, Truck Delivery, Rear Rears (Tandem Rear or Single), Fits to: Freightliner Cascadia 132, (Used) 2015 Freightliner Cascadia 132, COMPLETE DIFFERENTIAL GEARS ONLY- Part Number: S11-18621-321, Serial Number: DRA14180592, Make: Meritor, Model: RS23-161, Ratio: 3.21, 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 3.21, Serial# DRA14180592, Casting# DRA14180592 3ALAGGDV4FSGK2392