Cat C15 15L Engine, 475 Adv. Horsepower, Engine Brake, Eaton Fuller 18 Speed Manual Transmission, 219" Wheel Base, 6x4, 13,220 lb. Front Axle, 44,000 lb. Rears, 57,220 lb. GVWR, Air Ride Cab, Air Ride Suspension, Dual Exhaust, Wet Kit, Sliding 5th Wheel, Sun Visor, Chrome Bumper, Air Conditioning, Cruise Control, Power Windows, Power Locks, Heated Mirrors, Dual High Back Seats, Tilt Steering Wheel, Telescopic Steering Wheel.