The Allis Chalmers I400 is an industrial tractor produced from 1966 to 1968. It features a 2.4L 4-cylinder gasoline engine producing 40.6 hp (30.3 kW). The tractor is two-wheel drive with power steering and an open operator station. It was built in West Allis, Wisconsin, USA. The I400 supports attachments such as a front-end loader and backhoe, with detailed specifications for lifting capacity, reach, and hydraulic performance. The tractor weighs between 3980 and 7400 pounds depending on configuration.