Individually milled from super durable 6061 T6 aluminum billets, these CNC machined Speedmaster carburator spacers can handle anything your vehicle can dish out. They"re so tough, they"re guaranteed for life. The precise design of these Speedmaster carburetor spacers provides a smooth transition of fuel from the carburetor to the intake manifold, to increase flow for more performance. They also help to insulate the carburetor from engine heat and provide clearance for linkages.