Allstar Performance Holley 4500 Open Carb Spacer - 1" Thick Helmet Air System Motor Rocker Switch

Rocker Switch

Pro Series 10-micron fabric replacement element

Dry boiling point of 600 +

Air Bleed Valve

Provides exceptional clarity and no distortion

Allstar Performance Holley 4500 Open Carb Spacer - 1" Thick Helmet Air System Motor Rocker SwitchSpecially designed for drag race applications to isolate carburetor from manifold, spacers prevent horsepower robbing heat transfer and increase the distance from the bottom of the carburetor to the manifold plenum for better air flow. Spacers are CNC machined in the U. S. from a polymer compound able to withstand temperatures up to 400F. Available in open or four hole versions for 4150 and 4500 series Holley and Holley style carburetors in 1 2", 1",