The Deutz-Fahr DX 90 is a row-crop tractor produced from 1978 to 1982 as part of the DX Series. It features a Deutz 4.7L 5-cylinder air-cooled diesel engine delivering a claimed PTO power of 84 hp (62.6 kW). The tractor offers a 15-speed fully synchronized transmission with 15 forward and 5 reverse gears, and is available in two- or four-wheel drive variants. It includes hydraulic dry disc brakes, power steering, and a cab with air-conditioning as standard. The DX 90 has a fuel capacity of 31.7 gallons (120 L) and a hydraulic system capacity of 3.96 gallons (15 L). Dimensions include a wheelbase of 100.8 inches (256 cm), length of 170.1 inches (432 cm), and height of 102.4 inches (260 cm). The tractor hitch is category II with a rear lift capacity of 7720 lbs (3501 kg).