The Massey-Harris 333 is a row-crop tractor produced from 1956 to 1958 by Massey-Harris in Racine, Wisconsin, USA. It features a Continental 3.4L 4-cylinder gasoline or diesel engine, a 10-speed gear transmission, and two-wheel drive with manual or optional power steering. The tractor has an open operator station and mechanical expanding shoe brakes. It was built with a wheelbase of 88.1 inches and an operating weight of 6000 lbs. The 333 model was produced in a total of 2,748 units and originally sold for $3,000 in 1958.