cant find part numbers

Long story short, my son traded for a 2006 ms6. As soon as he got home the number 3 cylinder went bang.
The kid he got it from was an idiot and messed up a lot of stuff. Had to use a breaker bar to get the spark plugs out.
Replacing the motor and some random parts since its out of the car but I'm quickly learning this car is impossible to find anything for.
Searched the site for info so forgive me if I missed something. But I need to find the part numbers for the left and right axle seals and the oil cooler on the transfer case.
I also cant tell if there's supposed to be a seal between the transfer case shaft ant the transmission. It looks like someone gooped some sealant in there and put it back together.
If anyone can be my hero you'd save me a lot of 4 letter words that would make my mom mad.

 

Welcome! @Rokusek may know these!

 

Axle seals on the transmission? I'll have to find it in the shop manual. I'm certain the MS3 LH seal is the same, the RH side my be as well, I'll double check to be certain.

There is no seal between the transfer case and the transmission. It uses that inner rh axle seal.

Parts are most definitely difficult to find. But not impossible.

Sadly, not many post parts for sale here as most use a place I won't mention here.

As for the cooler... I've not ever seen one of those for sale. But let me do some digging and get back to you on part numbers to be absolutely certain.