Billet Aluminum Carburetor Spacer (1'' - 4150/4160-series)

The purpose behind Moroso's (or any other) carburetor spacer is to extend the length of the intake mixture column to improve air/fuel distribution. There are two different styles of spacers with distinctively different benefits. The open plenum design increases plenum volume for improved high rpm power, while the 4-hole designs increase the air/fuel mixture velocity for improved low-speed and mid-range torque. Fully CNC machined from 6061-T6 billet aluminum to extremely accurate specifications.