Original gasket between right and left engine block.
When installing a new gasket, it is incredibly important that the gasket surface is free of nicks, scratches and free of gasket residues from any liquid or old gasket, so that there is no risk that the new gasket cannot close tightly as it should.
Often and often you will not be able to replace the engine gasket with e.g. liquid gasket as the gasket also acts as a spacer between the two halves that together make up the engine block.
We do not recommend reusing the engine gasket, as the risk of leaks increases.