You could use a regular copper/al crush washer since Nissan doesn't have any.
We sell them
HERE if you are stuck on the Nissan washer.
If this is your first time you can probably get away with not changing it because it is a solid crush washer. This is not a guarantee it wont leak but 99% of the time you can get away with reusing it as long as it wasn't damaged or over-tightened.