Each and every part inside your tranny is critical to keeping the whole machine running, and this is especially true of your automatic transmission seal. It's the job of the automatic transmission seal to stop the precious fluids inside your transmission from breeching and spilling out onto the ground, as well as to prevent gunk and grime from creeping into the tranny. If you notice that your automatic transmission seal starts to fail, pick up a dealer-quality replacement at guaranteed low prices at AutoAnything.