Holley 122-5000 Carburetor Metering Jet Extension
by Holley
Sale
$41.11
$31.98
Improved Jet Extension Design That Actually Screws Into The Metering Block The Installation Effectively Moves The Fuel Entry Point For The Main Jet Out Into The Fuel Bowl Limited 90 Day Warranty
Specifications
Compatibility - Holley Performance Carburetors
Hole Size (IN) - 1/4 Inch
Thread Size - 1/4 Inch-32
Jet Extension Style - Screw-In
Material - Brass
Quantity - Set Of 2
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
