Holley

Standard Main Jet #451/4-32" Thread, .045" Hole Size (Pair)HO122-45122-45These metering orifices control fuel flow into the metering system. They a...

Standard Main Jet #471/4-32" Thread, .047" Hole Size (Pair)HO122-47122-47These metering orifices control fuel flow into the metering system. They a...

Standard Main Jet #481/4-32" Thread, .048" Hole Size (Pair)HO122-48122-48These metering orifices control fuel flow into the metering system. They a...

Standard Main Jet #491/4-32" Thread, .048" Hole Size (Pair)HO122-49122-49These metering orifices control fuel flow into the metering system. They a...

Standard Main Jet #501/4-32" Thread, .049" Hole Size (Pair)HO122-50122-50These metering orifices control fuel flow into the metering system. They a...

Standard Main Jet #511/4-32" Thread, .050" Hole Size (Pair)HO122-51122-51These metering orifices control fuel flow into the metering system. They a...

Standard Main Jet #521/4-32" Thread, .052" Hole Size (Pair)HO122-52122-52These metering orifices control fuel flow into the metering system. They a...

Standard Main Jet #551/4-32" Thread, .054" Hole Size (Pair)HO122-55122-55These metering orifices control fuel flow into the metering system. They a...

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 #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 #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 ...