; 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; 4150/4160 Series Holley® bolt patterns to fit a variety of carburetors; 4150/4160 Series Spacers 1 thicknesses 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 stops porosity
• Holley bolt patterns available
• Open Plenum increases plenum volume for high rpm power
• Gaskets excluded
• For 4150/4160 Carb
• 1 thick.

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Information:

Carburetor Spacer; Billet Aluminum; 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; Available with 4150/4160/4500 Series Holley bolt patterns to fit a variety of carburetors; 4150/4160 series spacers available in 1/2, 1, 2 thicknesses with open plenum and 4-hole designs to suit tuning requirements; As a general rule, open designs increase plenum volume for improved high rpm power, while 4-hole designs increase mixture velocity for improved low-speed and mid-range torque; Gaskets are not included; 4150/4160 Carburetor; 1 thick; Open Plenum Design.