Need info on XP 900 Front Diff Leak

Hey Guys I was pulling my axels on my 2013 XP 900 to put ant seize on them and found that front passenger side is leaking around the seal. One of the questions I have is, the splines that go into the housing are covered in oil, but only on the passenger side. the driver side was dry and stuck. is there an inner and outer seal? is this normal? Question 2 any recommendations on seal kits/replacement parts while I have it out? any pointers or anything to look out for would be a big help.

Go back with OEM. Very simple fix.

Polaris part # 3235171 KIT, SEAL REPAIR

Only one seal on each side & it can be replaced from the outside without removing the diff.

Differential Exploded View

That Joe be the INFO MAN

Thanks for the part # Joe. I already pulled the diff out and opened it up. I saw a few things on you tube I wanted to check out. I guess in 13 they put better parts in them. All the bearings and plates look good. So I think all I am going to need are the seals.

Check to see if the center carrier is billet or not, some 13s were and some were not. If it's not and you already have it out would be a good time to replace it.

That was my main concern when I opened it up and I have the billet in mine and from what I have found a better axel shaft carrier too.