Standard Main Jet #150 HO122-150 Olive Installation Tool Billet Aluminium Swivel Thermostat Housing

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Standard Main Jet #150 HO122-150 Olive Installation Tool Billet Aluminium Swivel Thermostat HousingStandard Main Jet #1505 16 32" Thread, . 150" Drill Size (Pair) HO122 150 122 150 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.