The Kaiser-Frazer Corporation was established in August 1945 as a joint venture between the Henry J. Kaiser Company and Graham-Paige Motors Corporation. Both Henry J. Kaiser, a California-based industrialist and Joseph W. Frazer, CEO of Graham-Paige, wanted to get into the automobile business and pooled their resources and talents to do so. Less than a year after Kaiser-Frazer's formation, the first Kaiser and Frazer branded automobiles were being produced at the Willow Run, Michigan, headquarters for both Kaiser-Frazer and Graham-Paige. By the end of 1946, over 11,000 cars (total Kaiser and Frazer) were shipped to dealers and distributors, many of which sold to end users. During the summer of 1948, the 300,000th car came off the production line.
In 1950, Kaiser-Frazer began production of a new compact car, the Henry J and ended production of the Frazer automobile. Both makes were 1951 model year automobiles. In 1952 and 1953, Kaiser-Frazer provided Sears, Roebuck and Company with Allstate-branded automobiles that retailer sold through selected Sears Auto Centers. The cars, based on the Henry J models that Kaiser-Frazer dealers were selling, were in the Sears catalog, but the car could not be purchased by mail order.
At the 1953 New York Auto Show, Kaiser-Frazer announced it would produce a fiberglass bodied sports car, called the Kaiser-Darrin-Frazer 161 The car had a 161 cubic inch six-cylinder engine and was designed by stylist Howard "Dutch" Darrin, who also did the 1947–48 Kaiser & Frazer as well as the 1951 Kaiser automobiles. The vehicle went into production during January 1954 and was sold as the Kaiser Darrin. Production of the Allstate ended during 1953, the last Henry J automobiles were built in late 1953 as 1954 model year cars. The sports car was in production only during the 1954 model year.
