572,857 Miles Detroit DD15 Engine, 505 H.P. Engine Brake DT12 Transmission, (Automatic), 72" Mid-Roof XT Sleeper 40,000 Lb. Rear Ends 3.08 Ratio TriPac Auxiliary Power Unit, Super Singles Air Ride Hydraulic Power Steering Dual Aluminum Fuel Tanks Stainless Steel Quarter Fenders Bunk Heater Tilt And Telescoping Steering Wheel Cruise Control Power Windows Adjustable 5th 240 Inch Wheel Base Disc Brakes 11R24.5 Tires Front 22.5 Low Profile Tires Rear Aluminum Disc Wheels