The Allen was an American automobile built in Fostoria, Ohio between 1913 and 1921. The company used 3.1 liter four-cylinder side-valve Sommers engines, and acquired said company in 1915. The 1920 the Allen 43 was made, featuring bevel-sided touring coachwork and a high-shouldered radiator. Ultimately, sales of this vehicle were not enough to avert the company's bankruptcy, which followed in 1921. Willys acquired what little was left.^[1] In total, 20,00 vehicles were sold.^{[citation needed]}