These zinc-plated Pair of heat treated 5140 Steel Studs is specifically designed for mounting J series upper intake manifolds to lower intake manifold runners. These studs have a slim shank for effortless alignment of the intake manifold, making them useful for realigning the intake manifold when your cylinder heads have been resurfaced and no longer line up with the intake manifold's center holes.

For use without an intake manifold spacer.  If your using P2R P392 intake manifold spacer.  Then you will want to order our studs BK35