Allstar Performance Holley 4500 4-Hole Carb Spacer - 1/2" Thick H75915FS Support tubes included

Support tubes included

GM X-Body 1971-72

1 rating means that the Nomex ® interior and paint are fire retardant as well as the Kevlar(R) chin strap

Carb mounting flange is uncut

Pocket Pods and SeatGloves

Allstar Performance Holley 4500 4-Hole Carb Spacer - 1/2" Thick H75915FS Support tubes includedSpecially 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",