Review on WISPAUSU Installer MG21103 Compatible Differentials by Jayson Sharma

Outer seals perfectly fitted and well lubricated. The inner gasket press didn't work out of the box. I had to change it. Something I read over and over again was: Buy multiple seals because you'll ruin one yourself. I'm glad I did. That's how the press works. Or great. You must balance the gasket on the rim of the press. It was almost impossible. The press has a narrow side with a rim that must be used to prevent compaction. The other side is just a flat piece but it doesn't go into the diff case. However. With a little modification, it works incredibly well. I took the larger flat end of the press that didn't fit and shaved it off so it barely fit in the side of the diff. This allowed the gasket to stick firmly to the pressing surface. Worked great.