Detroit Series 60 14.0 L 435 hp Engine, US EPA Label, Engine Brake, Eaton Fuller 13-Speed Transmission, Differential Lock, 12000 lb Front Axle, 40000 lb Rears, Air Ride Cab, 60 in Sleeper Cab, Bunk Beds, Aluminum Front Wheels, 11R24.5 Front Tires, 285/75R24.5 Rear Tires, Airliner Air Ride Suspension, 244 in Wheelbase