Here is some information from the filling station website.
1937-1962 ENGINE SOFT PLUG KIT
Item ID: FS-529
Make: Chevrolet
This is a soft plug (freeze plug or expansion plug) kit for all 1937-1962 Chevrolet cars & trucks with 216, 235 or 261 CID engines. Set includes 4 ea. 19/32" cupped plugs, 4 ea. 5/8" threaded plugs, 2 ea. 1-5/8" cupped plugs, 1 ea. 2-7/64" cupped plug, 2 ea. 2" concave plugs. Replaces GM# 838538, 3835121
This part fits most 1937 1938 1939 1940 1941 1942 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 Chevrolet Cars and Trucks.; exceptions may apply. Please read the complete description to see if this part fits your specific vehicle and application.
