This piece welds onto your intake manifold so you will be able to mount the rubber two bolt flange. We offer two different styles. - First flange is the two hole one. Center hole is 1.300 ID. Center to Center of the bolt holes is 2.900.
- Second flange has 4 bolt holes. Center hole is 1.450 ID. Center to Center is 2.900 and 2.312.
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