Detroit DD15 6 Cylinder 14.8 L Diesel 400 hp Engine, 2017 US EPA Label, Requires Diesel Exhaust Fluid, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Detroit DD12-1750DH1 HD 12-Speed Automated Transmission, 12350 lb Front Axle, 40000 lb Rears, Meritor MT-40-14X Drive Axles, 2.28:1 Axle Ratio, 52350 lb GVWR, Air Ride Cab, cascades 70 in High Rise Sleeper Cab, Bunk Beds, Thermo King TriPac evolution Auxiliary Power Unit, Aluminum Wheels, 295/75R22.5 Front Tires, 295/75R22.5 Rear Tires, Airliner Air Ride Suspension, 227 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks