Standard Main Jet #40 HO122-40 Product:1/4-32" Thread, .040" Hole Size (Pair) AutoMeter's advanced bourdon tube meter

AutoMeter's advanced bourdon tube meter movement provides unparalleled performance in the most demanding applications

Adjusting nut dependent on installed studs

You can have B&M shifter performance with the Console MegaShifter

AF741-12-12

• Turbine Inlet Gasket

Standard Main Jet #40 HO122-40 Product:1/4-32" Thread, .040" Hole Size (Pair) AutoMeter's advanced bourdon tube meterStandard Main Jet #401 4 32" Thread, . 040" Hole Size (Pair) HO122 40 122 40 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.