The factory XJ power steering gearbox spacer is a total after-thought and a P.O.S. They always break and/or seize to the mounting bolts making them a real pain to use.
IronRock has come up with a solution. The 3/16" steel plate comes with welded HD spacer rings. Not only will they last, but they will offer extra support for your steering gearbox, spreading the load of the mounting bolts to a larger surface area. This spacer comes powdercoated black for excellent corrosion resistance.