Thermostat OEM BMW or OEM Nissan

I was instructed by a friend who had some of m47 and m57, to buy thermostat only original from bmw, because everything else doesn't work as long or good.

After reinstalling an OEM thermostat, I am very happy to say my high temp issues have been solved!

We had to replace thermostat from Nissan group Infinity. So far no problem right now

The replacement thermostat came from BMW. No problems this time.

Just make sure you buy a genuine Nissan thermostat. I don't know what it is about these cars, but they do NOT like aftermarket thermostats. Just spend the extra ten bucks on a Nissan part.

When I stuck the key in the ignition, the temp needle pegged the far end of the hot zone. AAA towed it to the Nissan dealer and they put a thermostat it in for $50 or something and it worked perfectly after that.

Changed to genuine thermostat, no change. Needle tends to dip on higher load highway driving, but only occasionally. Obd temp is between 77C-88C.