- Probably Behr Chinese reservoir that fails in 3 months.
- Best is to go to ebay, at this moment, there is a seller "
cenauto" selling OEM reservoir for $55 (instead of the usual $95 price).
https://www.ebay.com/itm/Genuine-BMW.../122630659270?
I just bought one for my 2004 X3 for $55, and it is genuine BMW reservoir.
There are only a few left at that price.