The Fahr D90 is a farm tractor produced by Fahr from 1954 to 1956 with a total of 4260 units built. It features a 12 hp (8.9 kW) air-cooled 1-cylinder diesel engine (MWM AKD112E) with a displacement of 0.9 L. The tractor has a 10-speed gear transmission (ZF A5K) with 10 forward and 2 reverse gears. It is a two-wheel drive with manual steering and an open operator station. The rear PTO operates at 540 rpm. Dimensions include a 60 inch (152 cm) wheelbase, 98 inch (248 cm) length, 60.6 inch (153 cm) width, 66.2 inch (168 cm) height, and a weight of 2315 lbs (1050 kg). Variants include the standard D90 and the high-wheel D90H.