4 Runner 2WD L4-144.4 2366cc 2.4L SOHC (22R-E) (1990)
Part number 00228-00909 (internal tooth lock ring) is available through normal Toyota parts channels (4 parts per vehicle are required).
Note:
All Running Board Kits manufactured on or after October 17, 1989 (identified by lot # K179 on the outside of the shipping container) include
the additional internal tooth lock rings and an installation instruction sheet.