[Untamed]

No its a round piece the width of the pipe with two slotted grooves opposite each other on the outside of the spacer that guides the spacer between the two bolts coming from the manifold collector. The outside edge of the openings on both sides of the spacer are tapered to provide a sealed fit (I think) between the pipe on one end and the manifold collector on the other end. Unfortunately I dont have an electronic picture of it, just the exploded view of the manifold-to-pipe view in the GM manual.

If it turns out that the assembly described above really is a metal-to-metal fit, then maybe its the manifold gasket that is leaking against the head. That would suck.

Thanks for the help Jeff. If anyone has a picture of theirs assembled, I'd greatly appreciate it. Just want to verify what it looks like assembled.

Originally Posted by JL8Jeff

I'm guessing this is really like some form of heat riser valve. The early cars had it on the passenger side exhaust manifold. If it is similar, it needs gaskets on both side. Is it like this?