Allstar Performance Holley 4500 Open Carb Spacer - 1/2" Thick MAC-1X DUAL Chin Curtains Mounted on

DUAL Chin Curtains Mounted on both top and bottom of Chin Bar

1 offering from Schroth Racing

With Kevlar Shroud Lines

Air Jack Kit

Allstar Performance Holley 4500 Open Carb Spacer - 1/2" Thick MAC-1X DUAL Chin Curtains Mounted onSpecially 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",