Mr. Gasket Phenolic Insulating Carburetor Spacer provides a smooth transition of air and fuel from the carburetor to the intake manifold and increases flow for more performance. It helps insulate the carburetor from engine heat and provides clearance for linkages. This spacer was designed to insulate and reduce heat flow to the carburetor keeping it cooler to allow a denser fuel mixture to enter the engine and produce more horsepower. Comes complete with gaskets, studs, nuts and washers.