Holley Main Jets 58 #122-58 fluids-lubrication-lube-tools Reversible: No

Reversible: No

Length Open

Overall length L1 5"

Trubor 17/32" Hss Std Slot Drill For general milling of slots & cavities

Standard ratchet combination wrenches: for all current applications

Holley Main Jets 58 #122-58 fluids-lubrication-lube-tools Reversible: NoThese metering orifices control fuel flow into the metering system. They are rated in flow capacity cubic centimeters 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. Standard Main Jet . 058" Jet size 1 4 32 Thread Sizes from 40 110 Fits All Holley Model 2010, 2300, 4010, 4011, 4150, 4160 & 4500