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Holley 108-12
Base Gasket 1.75 in. Bore Size .3125 in. Thickness Fits Holley 4160/4150 and four barrel TBI flange pattern
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Holley 108-10
Open Center Base Gasket (1-13/16")1..8125 in. Bore Size, .060" in. Thickness. Fits Holley 4160/4150 and four barrel TBI flange pattern
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