I don't want to get anyone's hopes up just yet, but I ordered a brand new P/S reservoir over the weekend from an online source. This will give me a new filter in the base, plus I can modify my original to use an inline filter in the future.
The reason I don't want to mention where yet is that I tried every Honda parts source I could find some time ago and the part was discontinued. The one I ordered still cost $50, but I'm excited about it and hope it's actually the correct one.
I'll keep y'all posted.
Mike
Bookmarks