Thanks if you can help. This has center layer of steel, and a thick and thin layer of something either side. PO had HG done by a truck repair shop. When I replaced injectors, i decided to use the included cork gasket. I'm now just noticing (duh) the plenum gasket is some sort of steel gasket, and am now assuming the HG gasket would be same. Just curious if this gasket can be identified.

 

i'm not sure what you're going for here. how is knowing the brand going to help?
the plenum is not a high heat application, so cork or fiber would be ok, although it might not last as long.
the intake, exhaust, & head gaskets would have to be metal.

 

My ignorance of HG (and gaskets in general) is showing I guess I didn't know all HG were metal based. I just thought a metal plenum gasket was over the top, so thinking the HG would be "the best money can buy."