Cummins ISX15 6 Cylinder Diesel 385 hp Engine, 14590 Engine hrs, Eaton Fuller FRO-15210C 10-Speed Manual Transmission, 12000 lb Front Axle, 20000 lb Rears, Meritor RS-23-160 Drive Axles, 3.58:1 Axle Ratio, Air Ride Cab, 275/80R22.5, Air Ride Suspension, 162 in Wheelbase