Allstar Performance Holley 4500 Open Carb Spacer - 1/2" Thick 2010191 The Simpson Hybrid Sport offers

The Simpson Hybrid Sport offers the same features as the Simpson Hybrid Pro Slide in a value priced composite version

Contrasting Red Leg Stripes

High Dielectric Strength Thermoplastic Cap With Brass terminals

but may be trimmed to fit many applications

Use this kit as a starting point to determine correct fasteners for application

Allstar Performance Holley 4500 Open Carb Spacer - 1/2" Thick 2010191 The Simpson Hybrid Sport offersSpecially 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",