G2 Axle and Gear Minor Installation Kit are designed for the installer that is working on a newer vehicle that has no need to change the bearings. These kits include all the parts that are needed to properly install a ring and pinion. These G2 kits include hard to find parts like a proper shim kit, replacement pinion nut , crush sleeve, pinion seal, ring gear bolts, silicone sealer, locktite and gear marking compound. these are the parts that the auto parts store never seems to have or ever herd of.