10 Best Used American Tractors You Can Still Buy Today

4. Allis-Chalmers WD45

Produced from 1953 to 1957, the WD45 marked a big step forward for Allis-Chalmers. It delivered around 40–50 horsepower and was among the first to offer factory-installed power steering, making fieldwork smoother and less tiring.

Its powerful engine and affordable design made it a favorite for mid-size farms. With thousands still in use or restored today, the WD45 remains a beloved icon of 1950s American farming.