Allstar Performance Holley 4500 Tapered 4-Hole Carb Spacer - 1" Thick 337008 Kit is constructed of 1-1/2"

Kit is constructed of 1-1/2" x

3/16-3/8 in Grip Range

Just as importantly

Quality Protection which is Economical and Lightweight

Allstar Performance Holley 4500 Tapered 4-Hole Carb Spacer - 1" Thick 337008 Kit is constructed of 1-1/2"Specially 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",