Date registered: May 2006
Vehicle: 2002 Mercedes ML320, 132k
Location: No. VA
Mentioned: 0 Post(s)
Quoted: 8 Post(s)
OK, I hate to go against the wisdom of this board, but I think there's no cooler and also no oil housing seal on the bottom. I don't see a nut (picture) nor any split in the casting. It certainly doesn't look like bula's diagram above.
For future reference, this is an early build (bought in Sept 2001) 2002 ML320. Many catalogs, including the Mercedes one (used by dealer sites and parts.com) show a cooler, side seals, and a bottom seal for 2002 and V6 engine in both the listings and the diagram. One or two put the caveat about engine number on it (which I doubt is even relevant in 2002); the dealer catalog does not.
At least it's not the source of my leak.