Carburetor Standard Main Jet - 122-60 cold-air-intake 2007-2013 Chevrolet Silverado 1500 w/

2007-2013 Chevrolet Silverado 1500 w/ 4L60-E Transmission

1973-1980 GMC C25/C2500 Pickup

4L V8 1976 - 1977 GMC K25 Suburban 454/7

0L L4/121 CID 2022 Audi TT Quattro 2

Carburetor Standard Main Jet - 122-60 cold-air-intake 2007-2013 Chevrolet Silverado 1500 w/Overview: 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 &