2020 Meritor/Rockwell Other, Truck Tractor, Front Rears (Tandem Front), Fits to: Western Star 4900EX, (Used) 2020 Western Star 4900EX, COMPLETE FRONT DIFFERENTIAL GEARS ONLY- Make: Meritor/Rockwell, Rear Model: MD2014X4DCRNN667-390, Serial Number: FOR05728254, Custom Number: C11-00043-786, Ratio: 3.90, Capacity: 20,000Lbs, 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 3.90, Serial# FOR05728254, Truck Year 2020 5KJJABD17LPLS6893