4500 Holley 1/2″ 4-Hole Phenolic Carburetor Spacer 65710
B&B’s Phenolic Carb Spacers allow engine builders to tune plenum areas for maximum power in the desired RPM range. Phenolic is a pressure molded fiber resin material that is a natural insulator to avoid heat transfer to the carburetor.
- Fits Holley 4500 Dominator
- 4 Hole
- 1/2″ Thick