There have been posts concerning the #14 series OM603 six-cylinder engine heads, and their apparent greater tendency to crack. However I'm looking at a car that has a number #10 as part of the casing number, and I'm mystified. I was under the impression that #14 was the original, flawed series on the OM603.

Any of you diesel maniacs have any insight into this mystery?

Thanks,

Peter4