I've come into a solid supply of a discontinued part for the volvo 850/v70 and a couple other models. The brake pressure sensor, a common failure point on these cars; causing leaks and other problems if failed. I have one of these sensors in my current car and have never had to worry about my sensor again, nearly 2 years after I replaced it. I have a couple for sale on my ebay page if anyone is interested. These are difficult to find due to them being discontinued by the manufacturer, and used alternatives are not exactly ideal.

P/N: 9173210
Ebay Link