Phenolic Carb Adapter for Holley 2BBL to Holley 4BBL 1in

Canton phenolic carburetor adapter for mounting a Holley 2-barrel carburetor on a Holley 4-barrel intake, 1in thick. Made from phenolic material to reduce heat transfer, designed to insulate the carburetor from manifold heat in street or racing applications. Ensures proper fitment and improves air/fuel mixture, ideal for drag racing or street-strip builds. Includes mounting hardware. Sold as each.