Carburetor Standard Main Jet - 122-60 cold-air-intake Fits 2004-2008 Ford F-150

Fits 2004-2008 Ford F-150

1973-1980 GMC C25/C2500 Pickup

5 volt charging systems and 80 psi

These Big Block Chevy Upright headers available in 2-1/4" tube diameters are ideal for even big cubic inch Big Block Chevy engines

Carburetor Standard Main Jet - 122-60 cold-air-intake Fits 2004-2008 Ford F-150Overview: 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. Click on Catalog Product Page for complete listing of jets and sizes. Features: Fits All Holley Model 2010, 2300, 4010, 4011, 4150, 4160 &