A transmission casing houses all the parts of the transmission. It form of seems like a bell, so you’ll normally hear it known as a “bell casing.” The transmission casing is usually fabricated from aluminum. The ring gear. The ring gear is definitely the outer equipment and has inner tooth. https://finnbawur.theideasblog.com/32962132/the-5-second-trick-for-gearbox-kereta-auto