Detroit Series 60 6 Cylinder 14.0 L Diesel 515 hp Engine, 2006 US EPA Label, CARB Compliant, 17761 Engine hrs, Engine Brake, Eaton Fuller 10-Speed Manual Transmission, Differential Lock, 12000 lb Front Axle, 40000 lb Rears, Spicer Drive Axles, 52000 lb GVWR, Air Ride Cab, 70 in High Rise Sleeper Cab, Bunk Beds, Aluminum Outer Wheels, 295/75R22.5, Airliner Air Ride Suspension, 232 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks