BMW Repair: replacing thermostat on 95 525i, bmw manual, bmw 525i

Question
how to replace thermostat on my BMW 525i 1995?

Answer
The thermostat is located where the hose goes into the engine block on the top.    Drain the coolant, take the hose off, then take the thermostat off.

If you have questions, I recommend you get a BMW manual from your library.  This is basic enough any of them will have enough info for you to do it.