The Deutz-Allis 7120 is a row-crop tractor produced from 1986 to 1990 as part of the 7100 Series. It features a Deutz 6.1L 6-cylinder air-cooled turbocharged diesel engine and offers two transmission options including a 24-speed synchronized with partial power shift and a 32-speed. The tractor provides 122 hp PTO power and is available in two- or four-wheel drive configurations. It includes features such as push-button rear differential lock, optional OPTICTRAC automatic front differential lock, hydrostatic power steering, and a MasterCab with heat and air-conditioning. The hydraulic system is open center with a 10-gallon capacity and multiple valve options. The tractor hitch supports category III rear and optional category II front hitches. Dimensions vary slightly between 2WD and 4WD models, with operating weights from 11,243 to 12,081 lbs. Electrical system includes a 90 amp alternator and two 6-volt batteries. The 7120 is related to the 7110 and 7145 models in the series.