Carburetor Standard Main Jet - 122-48 discs-rotors-and-hardware Brand Holley EFI Color Natural

Brand Holley EFI Color Natural Construction Billet Emission Code 3 Engine Gen III Hemi Finish Natural Manifold Type Hi-Ram Material Billet Aluminum Product Type Intake Manifold Thickness

V8 GAS OHV Naturally Aspirated 2000 GMC Sierra 1500 SL Extended Cab Pickup 4-Door 4

42” to the lifter valley cover flange on engine block

Big Block Chevy

Carburetor Standard Main Jet - 122-48 discs-rotors-and-hardware Brand Holley EFI Color NaturalOverview: 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 &