Cat C15 Acert Engine, 475 to 625 hp, Extended Hood, Full Size Sleeper, Eaton Fuller 13-Speed Transmission, 3.55 Rear Ratio, Auxiliary Axle, (4) Brand New Tires, Rest of Tires at 70%, Block Heater, Well Taken Care of with Oil Changes Every 7k Miles, 1,784,605 Miles