New original AC #FP48 or GF48 glass bowl gas filter for 1933, 1934, 1935, 1936, 1937, 1938, 1939, 1940, 1941, 1942, 1946, 1947, 1948, 1949, 1950, 1951, 1952, 1953, 1954, 1955, 1956, 1957, 1958, and 1959 Plymouth, Dodge, DeSoto, Chrysler, and Imperial cars, and Dodge Truck. This is also used on some trucks up to 1968. I know starting in 1958, many cars use the in line round cannister filter. Whether or not you have a filter, it is always a good idea to run one.