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 made polymer / phenolic  compound able to withstand temperatures up to 400°F.

 Available in open  4500 series Holley and Holley style carburetors in 1" thicknesses. 

 Not intended or recommended for street or circle track use.

Kit Includes:

(1) Spacer 1" Tall

(2) Gaskets

(1) Carburetor Stud And Nut Kit