The Holley 122-230 is a main jet assortment kit covering the lower end of the gasoline jet range for Model 2300, 4150, 4160, and 4500 carburetors. It includes two each of every jet number from 60 through 69, organized in a black anodized Holley billet plate that keeps the jets sorted on the workbench or at the track.

Holley 122-230 Kit Contents:

• Main jet assortment for Holley Model 2300, 4150, 4160, and 4500 carburetors
• Two each of jet sizes 60 through 69
• Black anodized billet storage plate
• Genuine Holley 1/4 in.-32 brass gas jets
• Sold as a kit