2015 PETERBILT 579 Ultra Cab Conventional, Series 60 12.7 Liter 500 H.P. Detroit Engine, Engine Brake, 10 Speed Transmission, 40,000 Lb. Rear Ends, Full Screw, 2.64 Ratio, Air Ride Suspension, 80 Inch High-Rise Walk-In Sleeper, Power Invertor, Shore Power, Air Conditioned, Cruise Control, Deep Chrome Bumper, Deer Guard Bumper, Hydraulic Power Steering, Air Fairing, Exterior Visor, Heated Power Mirrors, High Back Air Ride Driver`s Seat, Power Locks, Telescopic Tilt Wheel, Power Windows, Horizontal Exhaust, Side Extenders, Wheel to Wheel Air Fairings, Dual Aluminum Fuel Tanks, Auxiliary Bunk Heater, Air Slide 5th, 248 Inch Wheel Base, 22.5 Low Profile Tires, Disc Wheels, Aluminum Disc Front & Outside Rear