Allstar Performance Holley 4500 Open Carb Spacer - 1" Thick 41012510 spring loaded face shield sliders

spring loaded face shield sliders

Zippered Closure

1975-1983 Ford E-100 Econoline

dynamic fuel delivery system

Allstar Performance Holley 4500 Open Carb Spacer - 1" Thick 41012510 spring loaded face shield slidersSpecially 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",