Volvo D13J-425 6 Cylinder 12.8 L Diesel 425 hp Engine, 2015 US EPA Label, Requires Diesel Exhaust Fluid, Volvo Automated Transmission, 12350 lb Front Axle, 38000 lb Rears, 50350 lb GVWR, Air Ride Cab, 61 in Mid Roof Sleeper Cab, 295/75R22.5, Volvo Air Ride Suspension, 210 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks