Standard Main Jet #74 HO122-74 Product:1/4-32" Thread, .0800" Hole Size (Pair) 0-15 psi SPORT-COMP 2-5/8" FUEL

0-15 psi SPORT-COMP 2-5/8" FUEL PRESS

HO300-123BK

Dual plane design for equal distribution and great mid-range torque without comprimising top-end power

AR455-2002

Standard Main Jet #74 HO122-74 Product:1/4-32" Thread, .0800" Hole Size (Pair) 0-15 psi SPORT-COMP 2-5/8" FUELStandard Main Jet #741 4 32" Thread, . 0800" Hole Size (Pair) HO122 74 122 74 These metering orifices control fuel flow into the metering system. They are rated in flow capacity "cubic centimetres 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.