Cummins ISX15 6 Cylinder 15.0 L Diesel 525 hp Engine, 2014 US EPA Label, Positive Air Shutoff, Engine Brake, Eaton Fuller RTLO-18918B 18-Speed Manual Transmission, Triple Differential Locks, 20000 lb Front Axle, 61000 lb Rears, Dana T69-170HP Drive Axles, 4.10:1 Axle Ratio, 81000 lb GVWR, Air Ride Cab, 62 in Mid Roof Sleeper Cab, Aluminum Wheels, 425/65R22.5 Front Tires, 11R24.5 Rear Tires, Dual Steering Boxes, Double Frame, Neway Air Ride Suspension, 310 in Wheelbas ...