Allstar Performance Holley 4500 Open Carb Spacer - 2" Thick H77703FM Nose Notch

Nose Notch

Oil Pump Pickup

This model packs awesome features

Nerf Bar / Bumper Fastener

Air Jack Kit

Allstar Performance Holley 4500 Open Carb Spacer - 2" Thick H77703FM Nose NotchSpecially 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",