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Your cart is empty.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 with the correct number.
Ron
Reviewed in the United States on August 10, 2020
They are jets and they work as advertised in my Holley 4160.
Razor
Reviewed in the United States on July 17, 2019
just what i need to get that lean roll out of 351 windsor engine carb that had 65's in primary's 69's done the trick.
Carol
Reviewed in the United States on April 30, 2016
got what i wanted
Hawaiian
Reviewed in the United States on August 22, 2013
They fit good but if you are not sure what size you need because of new engine or part change best to get the kit.
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