Nissan has discontinued the original ignition switch for the early model Z's and 510s. For a while we were unable to source a replacement. We now have found this quality replacement piece. It is not an exact replica of the original, but functions the same. Includes the lock cylinder assembly, housing, rear electrical assembly, and 2 keys. Also fits Datsun 510 7/70 to 1973 with steering column mounted ignition switch. Note: This switch does not use the same type of key as your original ignition switch. Your factory keys will not work with this unit. Does not have the 2 wires for connection of the key alert found on some models.