The most unique features on this F-550SD are, 4WD, Additionally this F-550SD is equipped with, 4WD, 120V/400W Outlet, 350 Amp Dual Alternators, 4-Wheel Disc Brakes, 4.88 Axle Ratio, 6 Speakers, 6-Ton Hydraulic Jack, ABS brakes, Air Conditioning, AM/FM radio, Brake assist, Compass, Delay-off headlights, Dual 68 AH/65 AGM Battery, Dual front impact airbags, Dual front side impact airbags, Dual rear wheels, Emergency communication system: SYNC 4 911 Assist, Engine Block Heater, Front anti-roll bar, Front Center Armrest w/Storage, Front License Plate Bracket, Front reading lights, Fully automatic headlights, GVWR: 18,000 lbs Payload Package, HD Vinyl 40/20/40 Split Bench Seat, Heated door mirrors, Illuminated entry, Limited Slip w/4.10 Axle Ratio, Order Code 660A, Outside temperature display, Overhead airbag, Overhead console, Panic alarm, Passenger cancellable airbag, Passenger vanity mirror, Platform Running Boards, Power door mirrors, Power steering, Power windows, Rear anti-roll bar, Rear View Camera & Prep Kit, Remote keyless entry, Snow Plow Prep Package, Speed control, Split folding rear seat, Steering wheel mounted audio controls, SYNC 4 Communications & Entertainment System, Tachometer, Telescoping steering wheel, Tilt steering wheel, Traction control, Trip computer, Turn signal indicator mirrors, Variably intermittent wipers, Wheels: 19.5'' x 6'' Argent Painted Steel, 4WD. 10-Speed Automatic Power Stroke 6.7L V8 DI 32V OHV Turbodiesel