Holley Carburetor Standard Main Jet #104, .134" SF523 3/4 in Smooth to 3/4

3/4 in Smooth to 3/4 in Smooth

Prep Stand Tool Holder

Spray Lubricant

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Holley Carburetor Standard Main Jet #104, .134" SF523 3/4 in Smooth to 3/4These 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. Installation Notes: NOT FOR USE WITH CARURETORS ORIGINALY DESIGNED FOR ALCOHOL Features: Standard Main Jet . 126" Jet size 1 4 32 Thread Sizes from