This listing is for a brand new Dana 50 minimum installation kit. This kit is designed to fit straight axle, D50 differentials. This kit comes with the small parts you will need to change the ring and pinion, including shims, gasket/RTV, pinion nut, pinion seal, crush collar/spacer, and marking compound. This kit does not include any bearings (available for an additional charge). Please supply vehicleinformation whenordering. Feel free to call or e-mail with any questions. Free shipping with the purchase of a ring and pinion set! Buy with confidence!