Locking Hub Conversion Kit for ’94-’99 Dodge Dana 44.The Yukon worry free Spin Free Kit replaces the vulnerable and expensive factory unit bearings with tapered bearings and races. The result is not only a design which is easier and more economical to servicebut one that offers significant increases in mileage per gallon. This hub kit also includes low-profile Yukon Hardcore premium locking hubsgiving you more driving selectability. This kit includes new wheel hubsspindleshigh strength Yukon 4340 Chrome-Moly outer axlesYukon Hardcore premium locking hubsTimken bearingshigh quality seals and all hardware for installation. Wheel hub diameter on this kit is larger than stock. If your vehicle is equipped with the factory aluminum wheelsthe center will need to be machined to 3.450 I.D to fit. The factory steel wheels will NOT work with this kit.