Detroit Series 60 6 Cylinder 14.0 L Ultra Low Sulfur Diesel 475 hp Engine, 2003 US EPA Label, Engine Brake, Eaton Fuller RTO-16910B Automatic Transmission, 12000 lb Front Axle, 40000 lb Rears, Meritor RT-40-145 Drive Axles, 3.58:1 Axle Ratio, 52000 lb GVWR, Air Ride Cab, 70 in High Rise Sleeper Cab, Bunk Beds, Aluminum Wheels, 295/75R22.5, Airliner Air Ride Suspension, 260 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks