Holley Standard Main Jet #47 HO122-47

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Standard Main Jet #471/4-32" Thread, .047" Hole Size (Pair)Brand: HOLLEYPart Number: HO122-47Description: These metering orifices control fuel flow into the metering system. They a re 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. Show more