VIN: 3AKJGEDR1HSHC7241, Detroit DD15 Engine, 455 hp, Detroit DT12-DA-1650 12-Speed Direct Transmission, 12,000 lb. Front Axle, 40,000 lb. Rear Tandems, Freightliner Air Ride Suspension, Cruise Control, 2.53 Rear Axle Ratio, Interaxle Differential Lock, 173 in. Wheel Base, Air Slide 5th Wheel, 70 Gallon Aluminum Fuel Tank, 275/80R22.5 Tires