Correct AOS part #

[BTfd2e93]

Hi Folks,

(Thanks ahead ...i really need to get this clarified, as my order at pelican is pending the right part # that I order.)

Can someone help to confirm the part number for AOS is below? so I need to buy 2?

996-107-080-54-OEM @ $37
Air Oil Separator (Inside Oil Sump of Engine, 2 per car)

I also found another part at pelican which is much more expensive $137. I dont know what this part is - but is also Oil separator. Pelican quoted me this part instead of the one above.

996-107-023-04-M100

Which is the one that is a common failure that is mentioned all the time?
my car is a 2001 Boxster Base Tip.

Thanks!!!