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Holley

Main Jet Extension

Main Jet Extension

Part # 122-5000 Be the first to write a review
Estimated shipping date: 12/08/2021
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Holley Days Price
$11.48
Suggested Retail
$12.76
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An improved jet extension design that actually screws into the metering block. The main metering jet then threads into the end of the extension. The installation effectively moves the fuel entry point for the main jet out into the fuel bowl. In this location it cannot be uncovered by fuel, causing a lean condition, during periods of hard acceleration or braking. 2/Pkg.

Features:

  • Improved Design
  • 2 Per Package

About Holley

Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, intake manifolds, and much more. From start to finish, Holley has the parts to make your dream a reality.

Brand Holley
Emission Code5
Product TypeMain Jet Extension
WarrantyLimited 90 Day
UPC090127336779
Part Number122-5000
5

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Requires the use of special "notched" float to achieve proper clearance and to operate properly. Notched float number 116-11 Or Kit with float and extensions 116-10.
Limited 90 Day: See Details
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