; Extends length of intake mixture column to improve air/fuel distribution; CNC machined from 6061-T6 billet aluminum to extremely accurate specifications; Billet aluminum eliminates porosity and improves engine appearance; 4500 Series Holley® bolt patterns to fit a variety of carburetors; 4500 Series (Dominator) Spacer is 1 thick with open plenum; Open designs increase plenum volume for improved high rpm power*Not legal for sale or use on pollution-controlled vehicles
- Extends length of intake mixture column
- Improves air/fuel distribution
- Billet aluminum eliminates porosity
- Holley bolt patterns available
- Open Plenum design increases plenum vol. for high rpm power
- For 4500 Carb
- 1 thick.