Allstar Performance Holley 4500 Tapered 4-Hole Carb Spacer - 1" Thick 337008 CNC Machined 6061 T6 Billet

CNC Machined 6061 T6 Billet Aluminum Housing

Painted black to resist corrosion

poer steeering or other high pressure lines

Just as importantly

Air Launcher

Allstar Performance Holley 4500 Tapered 4-Hole Carb Spacer - 1" Thick 337008 CNC Machined 6061 T6 BilletSpecially 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",