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Base Gasket

Base Gasket 1.75 in. Bore Size .3125 in. Thickness Fits Holley 4160/4150 and four barrel TBI flange pattern

PART# 108-12

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$27.51   Suggested Retail
$24.76   Your Price
Estimated shipping date: 03/23/2021
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.3125" thick open center base gasket for Holley square flange 4150 / 4160 carburetor and square flange Holley EFI throttle body applications. Hardware included. Compression support grommets in mounting corners.


  • Base Gasket
  • Mounting Hardware Included


Emission Code5
Gasket BoreOpen Center
Nut1/2" x 5/16"-24
Product TypeCarburetor Part
Stud Length1.62"
Thickness.337" +/- .015"
Thread5/16-18 & 5/16-24
Throttle Bore1.75" maximum
Part Number108-12



This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Tech Resources

Includes mounting studs and nuts. Do not over torque. Excessive torque can warp or break the base plate.
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        Some parts are not legal for use in California or other states with similar regulations.