631,781 miles,(miles exempt on title) pwd by Detroit D13 425hp 12.8L 6-cylinder diesel engine, 12 speed automated transmission, GVWR 50,350LB, 12,350LB front, 19,000LB rears. Equipped with: 5th wheel sliding plate, tandem axle drive line, air brakes, trailer air supply, diff lock, 5th wheel lock, air suspension ride, sleeper cab w/ bedding and cargo compartments, am/fm/cd stereo, AC/heat.