Holley Main Jet Extension
The Holley 122-5000 Main Jet Extension features an improved design that actually screws into the metering block. The main metering jet then threads into the end of the extension, effectively moving the fuel entry point for the main jet out into the fuel bowl.
Key Features
- Screw-in Design: Screws directly into the metering block for secure installation
- Brass Construction: Durable brass material for longevity
- 1/4" - 32 Thread: Standard threading for compatibility
- Sold as Pair: Comes with two extensions for complete carburetor setup
Benefits
- Prevents Lean Conditions: When positioned in the fuel bowl, the jet cannot be uncovered by fuel, preventing lean conditions during periods of extreme acceleration or braking
- Unrestricted Fuel Flow: Provides unrestricted fuel flow to the jet
- Easy Installation: Simple installation process
Important Notes
Requires the use of special "notched" float to achieve proper clearance and operate properly. Notched float number 116-11 or Kit with float and extensions 116-10.
Compatibility
Compatible with Barry Grant, Demon, and Holley gasoline carburetors. This part is legal for use on Emissions Controlled Vehicles, Uncontrolled Vehicles, and Racing Use Only Vehicles as it does not affect vehicle emissions.