I was under the impression that 110s never came with the gasket between the cam housing and cylinder head from the factory. My '83 280SE did not have one (don't remember which version of the engine was installed). The service manual indicates that the gasket is "for repairs". It's not really a gasket, but rather a very thin, almost foil, sheet of metal. I suspect it could affect valve timing very slightly; I did install this gasket upon re-assembly after a valve job and did nothing to correct the valve timing. I ran the engine for another 175k miles before the car was wrecked w/o problem.

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as ever
Paul

1989 560SL
1987 300SDL
1987 300TD
1983 BMW 633CSi
1972 280SE 4.5