Allstar Performance Holley 4500 Tapered 4-Hole Carb Spacer - 1" Thick BR20043 aluminum washers work with most

aluminum washers work with most body bolts to increase the surface area

eliminating the need for a separate bushing

that's why RaceQuip offers these black hardware kits to go with RaceQuip helmets

Steel Oval Allen Hd Fasteners 5/16"x

Allstar Performance Holley 4500 Tapered 4-Hole Carb Spacer - 1" Thick BR20043 aluminum washers work with mostSpecially 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",