NOS Original FORD - Carburetor Piston & Stem Assembly (Economizer Assembly). 1954 1955 1956 1957 1958 FORD - 6 cylinder TRUCK - Holley (Ford) Visi-Flo Carburetor. 1954 1955 1956 1957 1958 FORD - 6 cylinder Passenger cars - Holley (Ford) Visi-Flo Carburetor.
