Paccar MX-13 6 Cylinder 12.9 L Diesel 455 hp Engine, 2021 US EPA Label, Requires Diesel Exhaust Fluid, 75 gal Left Fuel Tank 75 gal Right Fuel Tank, Power Locks, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Paccar PO-16F112C 12 Speed Automated Transmission, Double Differential Locks, 13200 lb Front Axle, 40000 lb Rears, Paccar Drive Axles, 53200 lb GVWR, Air Ride Cab, Aluminum Wheels, 295/75R22.5 Front Tires, 295/75R22.5 Rear Tires, AG400 Air Ride Suspension, 194 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks