This is a new brass carburetor inlet fitting with a thick nylon gasket that fits many of the Rochester 65-71 GM car and truck Rochester Quadrajet carburetors with the smaller 7/8-20 inlet threads. It was also commonly used on the Marine Quadrajets.
ROCHESTER QUADRAJET CARBURETOR INLET FITTING W/GASKET 1 INCH TO 5/16 HOSE
ROCHESTER QUADRAJET CARBURETOR INLET FITTING GASKET FILTER 7/8-20 SHORT 3/8
ROCHESTER QUADRAJET CARBURETOR INLET FITTING RUBBER HOSE ADAPTER 5/16 HOSE PAIR
ROCHESTER QUADRAJET CARBURETOR INLET FITTING RUBBER HOSE ADAPTER FOR 5/16 HOSE
12 Pack of GF427 Rochester Quadrajet Carburetor Short Fuel Inlet Filter 68-75 GM
ROCHESTER QUADRAJET CARBURETOR FUEL INLET FITTING FILTER SPRING SIDE FEED CHEVY