The Fahr D400C is a farm tractor produced by Fahr from 1954 to 1957 with a total of 251 units built. It is powered by a Deutz F3L514 4.0L 3-cylinder air-cooled diesel engine producing 45 hp (33.6 kW). The tractor features a ZF A17 6-speed gear transmission with 6 forward and 1 reverse gears. It has two-wheel drive, manual steering, and an open operator station. The tractor's dimensions include a wheelbase of 92.7 inches (235 cm), length of 134.3 inches (341 cm), width of 73.4 inches (186 cm), height of 91.5 inches (232 cm), and a weight of 5670 lbs (2571 kg).