Holley

Standard Main Jet #561/4-32" Thread, .055" Hole Size (Pair)HO122-56122-56These metering orifices control fuel flow into the metering system. They a...

Standard Main Jet #571/4-32" Thread, .056" Hole Size (Pair)HO122-57122-57These metering orifices control fuel flow into the metering system. They a...

Standard Main Jet #581/4-32" Thread, .057" Hole Size (Pair)HO122-58122-58These metering orifices control fuel flow into the metering system. They a...

Standard Main Jet #591/4-32" Thread, .058" Hole Size (Pair)HO122-59122-59These metering orifices control fuel flow into the metering system. They a...

Standard Main Jet #601/4-32" Thread, .060" Hole Size (Pair)HO122-60122-60These metering orifices control fuel flow into the metering system. They a...

Standard Main Jet #611/4-32" Thread, .060" Hole Size (Pair)HO122-61122-61These metering orifices control fuel flow into the metering system. They a...

Standard Main Jet #621/4-32" Thread, .061" Hole Size (Pair)HO122-62122-62These metering orifices control fuel flow into the metering system. They a...

Standard Main Jet #631/4-32" Thread, .062" Hole Size (Pair)HO122-63122-63These metering orifices control fuel flow into the metering system. They a...

Standard Main Jet #641/4-32" Thread, .064" Hole Size (Pair)HO122-64122-64These metering orifices control fuel flow into the metering system. They a...

Standard Main Jet #651/4-32" Thread, .065" Hole Size (Pair)HO122-65122-65These metering orifices control fuel flow into the metering system. They a...

Standard Main Jet #661/4-32" Thread, .066" Hole Size (Pair)HO122-66122-66These metering orifices control fuel flow into the metering system. They a...

Standard Main Jet #671/4-32" Thread, .0663" Hole Size (Pair)HO122-67122-67These metering orifices control fuel flow into the metering system. They ...

Standard Main Jet #681/4-32" Thread, .0685" Hole Size (Pair)HO122-68122-68These metering orifices control fuel flow into the metering system. They ...

Standard Main Jet #691/4-32" Thread, .0693" Hole Size (Pair)HO122-69122-69These metering orifices control fuel flow into the metering system. They ...

Standard Main Jet #701/4-32" Thread, .0735" Hole Size (Pair)HO122-70122-70These metering orifices control fuel flow into the metering system. They ...

Standard Main Jet #711/4-32" Thread, .0750" Hole Size (Pair)HO122-71122-71These metering orifices control fuel flow into the metering system. They ...

Standard Main Jet #721/4-32" Thread, .0755" Hole Size (Pair)HO122-72122-72These metering orifices control fuel flow into the metering system. They ...

Standard Main Jet #731/4-32" Thread, .0790" Hole Size (Pair)HO122-73122-73These metering orifices control fuel flow into the metering system. They ...

Standard Main Jet #741/4-32" Thread, .0800" Hole Size (Pair)HO122-74122-74These metering orifices control fuel flow into the metering system. They ...

Standard Main Jet #751/4-32" Thread, .0820" Hole Size (Pair)HO122-75122-75These metering orifices control fuel flow into the metering system. They ...

Standard Main Jet #761/4-32" Thread, .0840" Hole Size (Pair)HO122-76122-76These metering orifices control fuel flow into the metering system. They ...

Standard Main Jet #771/4-32" Thread, .0855" Hole Size (Pair)HO122-77122-77These metering orifices control fuel flow into the metering system. They ...

Standard Main Jet #781/4-32" Thread, .0870" Hole Size (Pair)HO122-78122-78These metering orifices control fuel flow into the metering system. They ...

Standard Main Jet #791/4-32" Thread, .0890" Hole Size (Pair)HO122-79122-79These metering orifices control fuel flow into the metering system. They ...