Description
Holley Metering block 3/16 plug goes in the side of metering blocks to close of the ported vacuum port. This plug also goes in the bottom of the 4500 Holley dominators to plug the machine holes. This plug is also used to block off the fuel transfer channel on 4150 Holley carburetors, when converting to 4 corner idle.
Has on O.D. of .1920 and over length is .185
