Standard Main Jet #72 HO122-72 Product:1/4-32" Thread, .0755" Hole Size (Pair) Made from billet 6061 T6

Made from billet 6061 T6 aluminium these regulators are an ideal upgrade for the Carburettor or EFI fuel systems

550 Series Cutter Style One Piece Swivel 30° Stepped Hose End -8AN to -6 HoseSilver Finish

Get the maximum power from your carburetted engine with this Air Gap Small Block Chevy carburetted cast intake manifold

11 or lower gears

931-08-06BLK

Standard Main Jet #72 HO122-72 Product:1/4-32" Thread, .0755" Hole Size (Pair) Made from billet 6061 T6Standard Main Jet #721 4 32" Thread, . 0755" Hole Size (Pair) HO122 72 122 72 These metering orifices control fuel flow into the metering system. They are rated in flow capacity "cubic centimetres per minute" and are changeable for tuning purposes. The shape of the entry, exit, and size determines flow. All Holley Main Jets are flow tested and then stamped with the correct number.