You'll need this when you change your gas tank or take out the fuel sender. These are the correct version w/ the clutch head and brass seal washers installed.
1937 Chevy Passenger Car Steel Fuel Gas Tank + SENDER + STRAPS + T-Bolts
1938 1939 Chevy Passenger Car Steel Gas Tank + 0-30 Ohm Sending Unit & Straps
NEW 1958-1961 Chevy Passenger Car Air Cleaner Wing Nut
NEW 1955-1957 Chevy Passenger Car Chrome Air Cleaner Wing Nut
NEW 1955-1957 Chevy Passenger Car Air Cleaner Wing Nut
55-57 Chevy Passenger Car Gas Tank Filler Tube "O" Ring