Holley 122-78 Carburetor Standard Main Jet Header Each purchase includes a pair

Each purchase includes a pair of matching black grip donuts

Matte Black background and Thin Blue Line painted

making them an ideal addition to any vehicle

making it accessible for all users

So Make sure to follow the above picturedetails when placing order

Holley 122-78 Carburetor Standard Main Jet Header Each purchase includes a pairThese 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.