BLP BILLET METERING BLOCK ADJUSTABLE EMULSION
For 4150, 4500 Holley carburetors. Used for turning 3 circuit 4500 dominator to a 2 circuit one, or 4150 to fine tune for cleaner exhaust. Both PRI & SEC blocks. Made by BLT. See Link: Billet Metering Blocks
Shipping on you. Wood Gas Electronic device Metal Auto part
White Grey Fixture Circle Gas