The Edelbrock Air Cleaner Spacer allows additional clearance between the carburetor and air cleaner for custom linkage, return springs, fuel lines and electric chokes. The air cleaner spacer is designed to fit between the carburetor neck flange and the air filter assembly. The air cleaner spacer is made from durable, high impact plastic with a black finish. It fits all carburetors with a 5-1/8 inch diameter neck.