Where do you find key code on a 300z?

The key code for a Nissan 300ZX can typically be found on a small metal plate that is attached to the driver's side door jamb or in the owner's manual. Additionally, if you have the original key, the code may be stamped on the key itself. If you are unable to locate it, contacting a Nissan dealership with your vehicle’s VIN can also help retrieve the key code.