Sorry about that, but you are probably correct.

Yes I know it was for a V8, but was told it should fit. But after some closer comparison, it appears it won't, looking at the plenumn opening.

Here is another, but way more pricey.

2000 MERCEDES E320 ENGINE COVER.OEM: eBay Motors (item 170448412378 end time May-19-10 21:13:41 PDT)