Allstar Performance Holley 4500 4-Hole Carb Spacer - 1/2" Thick 91629059 and reduced emissions

and reduced emissions

easy on/easy off protector that blocks the heat and keeps you cooler the entire race

1975-1975 Buick Apollo

A1000 Stealth

Allstar Performance Holley 4500 4-Hole Carb Spacer - 1/2" Thick 91629059 and reduced emissionsSpecially 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",