4 Pack Carburetor Main Jet Extension Screw In Style Brass 4150 4500 Fits: Holley
$17.99
Fits 4150 & 4500 Series Holley Carburetors. Carburetor Main Jet Extensions Screw In Style - Fits: Holley. The installation of jet extensions (in the rear fuel bowl) moves the fuel entry point for the main jet out into the fuel bowl.
