D13H475 12.8 L Ultra Low Sulfur Diesel 475 hp Engine, 2010 US EPA Label, Power Windows, Differential Lock, 12500 lb Front Axle, 40000 lb Rears, 3.58:1 Axle Ratio, Air Ride Cab, 60 in High Rise Sleeper Cab, 295/75R22.5, Air Ride Suspension, 224 in Wheelbase

D12 12.1 L Diesel Engine, Engine Brake, Differential Lock, 12500 lb Front Axle, 38000 lb Rears, 3.58:1 Axle Ratio, 50350 lb GVWR, Air Ride Cab, 295/75R22.5, Air Ride Suspension, 190 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks

Volvo D13M-425 6 Cylinder 12.8 L Ultra Low Sulfur Diesel 425 hp Engine, 2017 US EPA Label, Requires Diesel Exhaust Fluid, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Volvo Automated Transmission, 12350 lb Front Axle, 38000 lb Rears, Meritor MT-40-14X Drive Axles, 50350.0 lb GVWR, Air Ride Cab, 61 in Mid Roof Sleeper Cab, Aluminum Wheels, 275/80R22.5 Front Tires, 295/75R22.5 Rear Tires, Volvo Air Ride Suspension, 211 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks