Cummins 6 Cylinder Diesel 400 hp Engine • 2011 US EPA Label • Eaton Fuller 18-Speed Manual Transmission • Differential Lock • 44000 lb Front Axle • 77000 lb Rears • 121000 lb GVWR • Aluminum Wheels • 425/65R22.5 Front Tires • 12R22.5 Rear Tires • Air Lift Tag Axle • Air Ride Suspension • 253 in Wheelbase • PTO • 250 in Cab to Axle • 336 in Cab to End of Frame