SOLD!
Originally purchased theis to have on hand for a power steering flush at high mileage; things have changed and the car is for sale now so I don't need it anymore.
Just an FYI: The power steering reservoir has a built-in filter; there is no way to replace the filter besides replacing the reservoir itself, which is why I bought this item in the first place.
This particular reservoir was manufactured by ZF Friedrichshafen AG, an OEM supplier to BMW.
OEM Power Steering Reservoir - $20 shipped
I am located in 98403 (Tacoma, WA). I can offer a $5 discount for local pickup. I can accept cash in person, or Paypal (either sent via the "Friends & Family" option, or +4% to cover fees, whichever you prefer).
Feel free to post here or PM me with any questions, and I'll do my best to answer!