The first generation of Packard One-Twenty was introduced for the 1935 model year. The first generation One-Twenty was offered in a wide range of open and closed body styles. For the first year of production, a 4.3L inline eight engine was fitted to the One-Twenty, but for 1936 and 1937, the model used a 4.6L inline eight. The first generation One-Twenty was built until 1937, when the model was named the Packard Eight for 1938. The model would return in 1939 as the Second Generation Packard One-Twenty.