555,832 Miles DD15 Detroit 505 HP DT12 Automated 72 Inch Mid-Roof XT Sleeper Engine Brake 40k Rears 3.08 Ratio Air Ride Suspension Hydraulic Power Steering Dual Aluminum Fuel Tanks Single Chrome Stack Exterior Visor Cab Extenders Stainless Steel Quarter Fenders Bunk Heater Tilt And Telescoping Steering Wheel Cruise Control Power Windows Auxiliary Power Unit Adjustable 5th 240 Inch Wheel Base Disc Brakes 11R24.5 Tires Front 22.5 Low Profile Tires Rear Aluminum Disc Wheels.