The Allen was an American automobile, built at Fostoria, Ohio between 1913 and 1921. The company used 3.1-litre side-valve Sommers four-cylinder engines, and acquired that company in 1915. The 1920 Allen 43 was a handsome craft, featuring touring coachwork and a high-shouldered radiator. Unfortunately, sales of this vehicle were not enough to avert the company's bankruptcy, which followed in 1921. Willys acquired what little was left. Overall, 20,00 vehicles were sold.