Important: There were primarily 2 different thread sizes used on the Rochester Quadrajet Carburetors. With the smaller 7/8 fittings you can see the inlet gasket between it and the carburetor. This is a new U.S manufactured brass carburetor inlet fitting with a coated gasket that fits many of the GM car and truck Rochester Quadrajet carburetors with the smaller 7/8-20 inlet threads.
