Moroso 1" Billet Carburetor Spacer - Fits Holley 4500 Series Open Plenum Design Z-Tech Sports moderate tone with minimal resonance

moderate tone with minimal resonance

Magnum Comp

Chrysler Gen-2 Hemi

Jet extensions should ONLY be installed on rear fuel bowl

Up to 15 psi Boost

Moroso 1" Billet Carburetor Spacer - Fits Holley 4500 Series Open Plenum Design Z-Tech Sports moderate tone with minimal resonanceExtends length of intake mixture column to improve air fuel distribution CNC machined from 6061 T6 billet aluminum to extremely accurate specifications Billet aluminum eliminates porosity and improves engine appearance Available with 4150 4160 and 4500 Series Holley(R) bolt patterns to fit a variety of carburetors 4150 4160 Series Spacers available in 1 2", 1" and 2" thicknesses with open plenum and 4 hole designs to suit tuning requirements; 4500