your axles have breathers on them you should have one for the front axle and one for the transferbox and one for the rear axle.. youre right it's for breathing but you also need a bellhousing and timing cover plug to make sure everything else says dry. there's little threaded holes on the bottom of these areas
The rear axle one is tucked away at the rear of the vehicle. The third one in the engine bay will be the gearbox breather.
your axles have breathers on them you should have one for the front axle and one for the transferbox and one for the rear axle.. youre right it's for breathing but you also need a bellhousing and timing cover plug to make sure everything else says dry. there's little threaded holes on the bottom of these areas