Carburetor Standard Main Jet - 122-63 pre-bent-fuel-lines Inlet Type: Clamp-On

Inlet Type: Clamp-On

Part Number: 12518409

1999-2004 Chevrolet Silverado 1500 294 CID

Compatible with Flex Fuel (E85/E90) and all types of gasoline (100% Alcohol fuels may diminish fuel pump life)

Power Steering bracket 10961HKR required for vehicles with power steering

Carburetor Standard Main Jet - 122-63 pre-bent-fuel-lines Inlet Type: Clamp-OnOverview: 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 &