RWA1222 1″ Holley 2BBL carburetor spacer is required when bolting a Holley carburetor onto a stock 2300 2bbl intake manifold (when the EGR plate is removed). This spacer will also work on on any intake manifold that has the 2bbl Holley bolt pattern. We supply the spacer with 2 gaskets and all the required mounting hardware, including the correct metric bolts to use on the stock Ford intake (not shown). The spacer is designed with a small tapper, this helps with fuel flow and helps create a better plenum under the carb. The spacer is cast aluminum with machined surfaces.