Carburetor Standard Main Jet - 122-55 fuel-pump takes the guess work out

takes the guess work out of tuning your base fuel table

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5 Primary Pump Nozzle Size 28 Product Type Carburetor Secondaries None Supercharged Application No Vacuum Ports 1 timed (spark) port and 1 PCV port Warning California Proposition 65 Warranty Limited 1 Year Warranty

Carburetor Standard Main Jet - 122-55 fuel-pump takes the guess work outOverview: 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 &