This differential lock actuator fork is what moves the locker from engaged to disengaged in your Syncro Vanagon.  Rebuilding your locker?  Consider replacing this fork.  

In Syncro vanagons, this pin holds the actuator shaft to the differential lock actuator. You must remove this pin in order to remove the diff lock actuator. You may need to replace this pin if...

This stainless steel locking diff actuator bracket works for both rear and front locking differentials in the VW T3 Syncro.  It is equipped with mounting provisions that make it compatible with...

This circlip lives on the diff lock actuator shaft that engages the differential lock. Ref ID: N0124171