Holley 122-78 JET

Holley Jet for Carburetors

SKU: HOL122-78

This carburetor jet is a standard main jet with a 1/4‑32 UNF thread and a 0.0890‑inch hole size, sold as a pair.

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 determine flow. All Holley Main Jets are flow tested and then stamped with the correct number.

Carburetor Jet Features:

• Fits Models 2010/2300/4010/4011/4150/4160/4500
• Sizes From 40-110
• 1/4 in.-32 Thread
• 0.089 in. Jet Size
• Standard Main Jet

Application Summary:

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 and size determine flow. All Holley Main jets are flow tested and then stamped with the correct number. Click on the Catalog Product Page for a complete listing of jets and sizes.