it's only on the driver's side
the disc is there because the seal is so much closer to the diff where the passenger side moves it away from the diff with what looks like a little transmission tail housing
that disc basically prevents the rotation of the diff from pumping oil out the seal like a paddlewheel
the disc is there because the seal is so much closer to the diff where the passenger side moves it away from the diff with what looks like a little transmission tail housing
that disc basically prevents the rotation of the diff from pumping oil out the seal like a paddlewheel