This is an upgraded Exhaust Manifold gasket.  This seals better than the metal factory one.  Best of all it is custom made to fit aftermarket headers better.  Many 2.2 and 2.4 Cobalt, HHR, G5 and Saturn Ions buy aftermarket headers that have larger diameter runners.  You ruin the whole purchase when you reuse your factory 2.2L exhaust manifold gasket because the holes on the gaskets are smaller.  These are slightly larger and seals much better.  The runner holes are the same size as the LSJ 2.0 Supercharged engine, but when you try to run the original GM gasket from the 2.0 supercharged gasket on a 2.2L or 2.4L car it leaks.  So this is a more improved gasket that doesn't leak and is especially needed when running an aftermarket header.  This works perfect on our Shorty header, Midlength header and our long tube header on any 2.2L, 2.4L and 2.0L supercharged vehicle.  Does NOT work on the 2.0 Turbo engines.  

Gasket for head to exhaust manifold.

Thank you for shopping!