Two New Old Stock, Pontiac Part #494904, Water Outlet Gaskets, are for: 

  1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1946 1947 1948 1949 1950 1951 1952 1953 1954 Pontiac 8 Cylinder.

1935 thru 1954 Pontiac 6 Cylinder.

1938 GMC T14 (after #34527) T15, T145, T155.