Where to buy differential cover gasket?
 

I've chk'd the online stores and no one seems to carry this gasket. Any one know of a source?

... sillicone...

No one uses a gasket. Just buy some of that blue poly stuff in the auto store (Form-a-Gasket) and lay a thin coat along the flange face. It will not leak, the gear oil is pretty thick and doesn't easily leak.

This actually is more likely to seal well than something like a paper or cork gasket.

Ken300D

when I changed by diff fluid I ended up going to the dealer and they said there is no gasket, they ended up giving me a tube that was about $7 (part no# A 003 989 98 20 10)