Does front Diff need a breather mod?

So I bought an ARB Diff Breather kit and was all set to do front and rear.
Then, In my research, I found folks that say the front isn't necessarily bc it is already up in the engine bay.

What about the caps though? Are they the 1-way caps? So if you go through water and the diff contracts, these close up and water gets sucked in through the axles?

 

Engine bay breathers are pretty high up. You can do the engine bay breathers and extend/relocate, but if you are getting into any water that high I would be more worried about other things sucking in water.

 

Sounds about right...

 

Where are the front breathers located?
Thanks

 

If I recall, they are near the fuse box

 

In the area below the brake booster

 

I have never heard anyone say that they got water in the rear differential from the check valve failing, so that one is probably not needed either.
However, the rear differential breather mod is so easy and inexpensive, it’s pretty good insurance against a potential failure.