The Farmall 1066 is a row-crop tractor built by Farmall, a part of International Harvester, in Rock Island, Illinois, USA. It was produced in the 66 Series with a total of 54,947 units built. The original price was $21,100 in 1976. It features an International Harvester 6.8L 6-cylinder turbocharged diesel engine, with a fuel tank capacity of 42 gallons (159.0 L). The tractor offers multiple transmission options including an 8-speed gear, 16-speed two-speed power shift, and hydrostatic. It has a drawbar power of 108 hp (claimed) and PTO power of 126 hp (claimed). The tractor supports two- or four-wheel drive, power steering, hydraulic dry disc brakes, and an open operator station with optional cab and air-conditioning. The Farmall 1066 is equipped with a rear hitch type III/II and an independent rear PTO with 540/1000 rpm options. It has a wheelbase of 105 inches (266 cm), weighs between 12,148 to 13,345 lbs depending on configuration, and uses 11L-15 front tires and 18.4-38 rear tires.