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

Cummins ISX12 G 6 Cylinder Compressed Natural Gas (CNG) Engine, 2014 US EPA Label, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Allison Automated Transmission, 12500 lb Front Axle, 40000 lb Rears, Meritor RS23-160 Drive Axles, 52500 kg GVWR, Aluminum Wheels, 295/75R22.5 Front Tires, 295/75R22.5 Rear Tires, Air Ride Suspension, 185 in Wheelbase, Air Sliding 5th Wheel

Cummins ISX12 G 6 Cylinder Compressed Natural Gas (CNG) Engine, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Allison 4500 Automatic Transmission, Differential Lock, 12500 lb Front Axle, 40000 lb Rears, Meritor MP-40-14X4 Drive Axles, 3.90:1 Axle Ratio, 52500 lb GVWR, Aluminum Wheels, 295/75R22.5 Front Tires, 295/75R22.5 Rear Tires, Air Ride Suspension, 210 in Wheelbase, Air Sliding 5th Wheel

Cummins ISX15 6 Cylinder 15 L Ultra Low Sulfur Diesel 400 hp Engine, 2015 US EPA Label, Requires Diesel Exhaust Fluid, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Eaton Fuller 10-Speed Manual Transmission, 12000 lb Front Axle, 40000 lb Rears, 50000 lb GVWR, Air Ride Cab, 11R22.5 Front Tires, 11R22.5 Rear Tires, Air Ride Suspension, 156 in Wheelbase, Air Sliding 5th Wheel

Cummins X15 400ST 6 Cylinder 15 L Diesel 400 hp Engine, 2021 US EPA Label, Requires Diesel Exhaust Fluid, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Eaton Fuller EEO 16F112C 12-Speed Automated Transmission, 12000 lb Front Axle, 38000 lb Rears, Meritor MT-40-14X Drive Axles, 3.08:1 Axle Ratio, 50000.0 lb GVWR, Air Ride Cab, Aluminum Front Wheels, Air Ride Suspension, Air Sliding 5th Wheel, Dual Fuel Tanks

Volvo D13 6 Cylinder 12.8 L Ultra Low Sulfur Diesel 405 hp Engine, 2011 US EPA Label, Requires Diesel Exhaust Fluid, Air Conditioner, Cruise Control, Eaton Fuller FRO-16210C 10-Speed Manual Transmission, 40000 lb Rears, Meritor MT-40-14X Drive Axles, 3.42:1 Axle Ratio, Air Ride Cab, 295/75R22.5 Front Tires, 275/80R22.5 Rear Tires, Volvo Air Ride Suspension, 171 in Wheelbase, Dual Fuel Tanks

Cummins ISX12G 6 Cylinder 11.9 L Compressed Natural Gas (CNG) 400 hp Engine, 2017 US EPA Label, CARB Compliant, Air Conditioner, Power Windows, Eaton Fuller 10-Speed Automated Transmission, Meritor MT-40-14X Drive Axles, 3.08:1 Axle Ratio, 50350 lb GVWR, Air Ride Cab, 295/75R22.5, Air Ride Suspension, 202 in Wheelbase, Air Sliding 5th Wheel