Detroit DD15 6 Cylinder 14.8 L Diesel 455 hp Engine, 2014 US EPA Label, Requires Diesel Exhaust Fluid, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Eaton Fuller FR-15210B 10-Speed Manual Transmission, 12000 lb Front Axle, 40000 lb Rears, Meritor MT-40-14X Drive Axles, 2.47:1 Axle Ratio, 52000.0 lb GVWR, Air Ride Cab, 72 in High Rise Sleeper Cab, Bunk Beds, Aluminum Outer Wheels, 275/80R22.5, Airliner Air Ride Suspension, 225 in Wheelbase, Dual Fuel Tanks