High strength billet aluminum window repair kit replaces the early (1991-1993) factory plastic window regulator retainers prone to breaking. The retainer clip does not fix windows that are slow to move up or down. This problem is most commonly a track alignment, track lubrication, or window retainer bushing problem. Window retainer bushings are now available seperately, here.
These are important preventative maintenance parts that can prevent an expensive repair in the future.