Machine description: Detroit DD13 6 Cylinder 12.8 L Diesel 450 hp Engine, 31751 Engine hrs, Engine Brake, Eaton Fuller FRO-16210C 10-Speed Transmission, Double Differential Locks, 20000 lb Front Axle, 44000 lb Rears, 4.11... more info about the 2011 Western Star 4900SA.