Mercedes-Benz 6 Cylinder 388 cid Ultra Low Sulfur Diesel 260 hp Engine, 2006 US EPA Label, Cruise Control, Allison Automated Transmission, 12000 lb Front Axle, 21000 lb Rears, 33000 lb GVWR, Air Ride Cab, 11R22.5 Front Tires, 11R22.5 Rear Tires, Airliner Air Ride Suspension, 145 in Wheelbase

Cummins ISC 6 Cylinder 8.3 L Diesel 300 hp Engine, 2009 US EPA Label, Air Conditioner, Cruise Control, Allison 3000 Automatic Transmission, 12000 lb Front Axle, 22700 lb Rears, Meritor RS-23-160 Drive Axles, 4.89:1 Axle Ratio, 34700 lb GVWR, Air Ride Cab, Aluminum Outer Wheels, 295/75R22.5, Airliner Air Ride Suspension, 150 in Wheelbase

Cummins ISC 6 Cylinder 8.3 L Diesel 285 hp Engine, 2008 US EPA Label, Air Conditioner, Cruise Control, Eaton Fuller T-14607B 7-Speed Manual Transmission, 12000 lb Front Axle, 22700 lb Rears, ARS-23 Drive Axles, 3.58:1 Axle Ratio, 34700 lb GVWR, Air Ride Cab, 295/75R22.5, Airliner Air Ride Suspension, 150 in Wheelbase