[john walker's workshop]

The bushings are sleeves that insert into each end of the R&P assembly and support the sliding rack bar. The ones I've seen that came out had the retaining ring damaged because whoever installed the turbo tie rods didn't use the thick washers at the rack to keep the inner end of the tie rod from beating on the retaining ring on lock to lock turns. May or may not be your issue. Look under the rack boots.