Brass Carburetor Jet

Carburetor jet available Slot Head Style or Hex Head Style. All jets are flow calibrated & extremely accurate in terms of fuel flow rate as stamped.

Brass Carburetor Jet

These metering orifices control fuel flow into the metering system. They're 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 with the exact number.


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