Allstar Performance Holley 4500 Tapered 4-Hole Carb Spacer - 1" Thick AA0220BG3R55 multiple inlet and outlet ports

multiple inlet and outlet ports of multiple sizesAeromotive Inc

1988-1995 GMC G3500

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Allstar Performance Holley 4500 Tapered 4-Hole Carb Spacer - 1" Thick AA0220BG3R55 multiple inlet and outlet portsSpecially 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",