Suresight, the number you referenced 23991 is not a holder its the washer for the switch see Brads pics in post #2, DroppedMitsu is right the switch retains the detent ball against the shift rail, if you are needing the plastic cup that goes around the little ball at end of shifter that takes up the slack to the shift cup in the trans as in Mikaleda pics good luck i found NO place that had one, let alone sell one including Mitsubishi dealer, Ford dealer that is part of the reason i put the starionfactoryparts short throw shifter in my truck.