Bronze Ford FE Truck Block Distributor Bushing. This bushing is a direct copy of an original Ford Service Part to fit the truck blocks with a larger 5/16" hex distributor and convert to a .467" shaft with a 1/4" hex. This bushing is also good for aftermarket Aluminum blocks that have wear. Must be machined to fit aluminum blocks. Upon installing will need to be honed to fit your distributor.