SpeedsStar - I don't have the part in front of me now; I'm at work. But the gasket was no different from the original, and in fact, the replacement generator case / cover had the same part number as the original. Hmmm...
I compared part numbers from the pieces in my replacement kit with those in the Spare Parts Manual for my 2005 -S, and going from memory, they are the same.
That said, this is my 2nd gasket re-install (first replaced the stator, re-used original gasket), and this time I did replace the gasket with the new one that came in the box when I replaced my torque limiter.
I didn't experience any leaks after the first time, but it was tricky getting the gasket to stay in place. I mangled it a little bit, but apparently not enough to count.
This time I used a hillbilly trick that helped with the gasket. Pics shortly...
You must be the change you wish to see in this world.