The Allis Chalmers WD45 was a very innovative tractor. It was the first tractor to be offered with power steering. For its size, the AC WD45 is a very powerful and versatile tractor. The Allis Chalmers WD45 was built from 1953 to 1957. It was offered with a unique hitch system for Allis Chalmers known as the snap coupler. There were about 90,000 total AC WD45 tractors manufactured with only about 6500 of them with factory Diesel engines. You can shop our full line of Allis Chalmers WD45 parts here.