Volvo D13M-455 6 Cylinder 12.8 L Diesel 455 hp Engine, 2018 US EPA Label, CARB Compliant, Requires Diesel Exhaust Fluid, Engine Brake, Volvo ATO2612F Automatic Transmission, Differential Lock, 12500 lb Front Axle, 40000 lb Rears, 52500 lb GVWR, Air Ride Cab, 61 in High Rise Sleeper Cab, Bunk Beds, Aluminum Wheels, 11R22.5, Volvo Air Ride Suspension, 230 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks