The CaseIH STX440 is a four-wheel drive (4WD) tractor introduced in 2001 as part of the Steiger STX Series. It is built in Fargo, North Dakota, USA. The tractor features a powerful Cummins QSX15 14.9L 6-cylinder turbocharged aftercooled diesel engine producing 440 hp (328.1 kW). It has a 16-speed full power shift transmission with electro-hydraulic wet disc clutch. The STX440 offers advanced mechanical features including compound planetary final drives, hydrostatic power steering, and integrated hydraulic wet disc brakes. The tractor is equipped with a Surveyor Cab as standard. Hydraulics include a closed center load sensing system with 4 to 7 rear valves and pump flow options of 40 gpm or 55 gpm. The rear hitch is type IVN with a lift capacity of 19500 lbs at 24 inches. The rear PTO is independent and optional with a 1000 rpm type. Dimensions include a 154 inch wheelbase and 44 inch frame width. Operating weight is 39325 lbs, ballasted weight 44560 lbs, and max capacity 52800 lbs. Tires are 20.8R42 front and rear. Electrical system features negative ground, alternator charging, two 12 volt batteries. The STX440 is related to the STX450 model produced from 2002 to 2005.