Seller notes

Holley Carburetor Metering Jet 122-63; Main Jet Gasoline Jet Type: Main JetCompatible Fuel Type: Gasoline Fits Models 2010/2300/4010/4011/4150/4160/4500Sizes From 40-1101/4 in.-32 Thread0.063 in. Jet SizeStandard Main Jet These 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...

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