holley

Standard Main Jet #401/4-32" Thread, .040" Hole Size (Pair)HO122-40122-40These metering orifices control fuel flow into the metering system. They a...

Standard Main Jet #411/4-32" Thread, .041" Hole Size (Pair)HO122-41122-41These metering orifices control fuel flow into the metering system. They a...

Standard Main Jet #421/4-32" Thread, .042" Hole Size (Pair)HO122-42122-42These metering orifices control fuel flow into the metering system. They a...

Standard Main Jet #431/4-32" Thread, .043" Hole Size (Pair)HO122-43122-43These metering orifices control fuel flow into the metering system. They a...

Standard Main Jet #441/4-32" Thread, .044" Hole Size (Pair)HO122-44122-44These metering orifices control fuel flow into the metering system. They a...

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 #461/4-32" Thread, .0465" Hole Size (Pair)HO122-46122-46These metering orifices control fuel flow into the metering system. They ...

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 #531/4-32" Thread, .052" Hole Size (Pair)HO122-53122-53These metering orifices control fuel flow into the metering system. They a...

Standard Main Jet #541/4-32" Thread, .053" Hole Size (Pair)HO122-54122-54These 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 #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...