This gasket is behind the brake drum for front or rear on 6 lug applications. Has the common Chevy 6 on 5-1/2 inch bolt pattern for the wheels. For 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 Chevrolet Trucks