Axle bearing. Left. Rear. Right. 12 x 2.5" Rear Brakes. Drive Axle Shaft Bearing. Drive Axle Shaft Seal. Exc.Maximum Towing Package. Ring Gear 10.25". Ring Gear 9.75". Semi-Floating Axle. Assembly - Roller. guide. o - ring. oil Seal. Differential Assembly. Drive Seal. Inner. Included with: Axle housing.