Holley Main Jets 58 #122-58 6230160  For medium profiling

 For medium profiling

Capacity: 80 to 120mm

washable headband

The 0-7448 is designed as a stock replacement for 2BBL street applications as well as being mandated for some oval track racing sanctioning bodies

Part Type: Carburetor Rebuild Kits

Holley Main Jets 58 #122-58 6230160  For medium profilingThese 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