Post by
gnubberlang »
https://forums.nicoclub.com/gnubberlang-u231776.html
Wed Mar 12, 2014 7:31 pm
I think it's recommended to replace them whenever the bolt is removed and replaced. That said I definitely reused the same washers when I replaced my PS hose a while back with no issues so far after 20k miles.
Edit: Misread your post. These are a little different than normal washers. They're called crush washers and usually made out of some soft metal (usually aluminum or copper iirc) so that they squash when the bolt is torqued. Auto parts stores usually carry them.