; 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 pattern to fit a variety of carburetors; 4150/4160 Series Spacers in 1 thicknesses with 4-hole design with 1.750 diameter bores; 4-hole design increases mixture velocity for improved low-speed and mid-range torque*Not legal for sale or use on pollution-controlled vehicles

• Extends length of intake mixture column
• Better air/fuel distribution
• Billet aluminum stops porosity
• 4-hole Plenum raises mixture velocity & improves low-speed/mid-range torque
• Gaskets excluded
• 4150/4160 Carb
• 1 thick
• 1.750dia. bores

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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; 4-Hole Plenum Design with 1.750 diameter bores.