Allstar Performance Holley 4500 4-Hole Carb Spacer - 1" Thick Nitrile O-Ring For 92-94 applications with the

For 92-94 applications with the spline drive

12 AN Hose to 7/8 in NPT Male O-Ring

600 in Long

2003-2013 Chevrolet Express 2500

Engineered filter solutions are required to achieve protection with minimum restriction

Allstar Performance Holley 4500 4-Hole Carb Spacer - 1" Thick Nitrile O-Ring For 92-94 applications with theSpecially 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",