Thermostat OEM BMW or OEM Nissan

I have this exact engine and installed a diesel thermostat. Previously, with the standard thermostat, the plastic timing chain guides would start to disintegrate after three years, but now I have no problem with that. The engine temperature is around 96°C.

Thermostat is an bmw part so its fine

Since going with the OEM thermostat, my temp gauge has stayed pinned just below the middle of the gauge, even towing campers and heavy loads on hot days.

Only an OEM Thermostat fixed it.

I had this exact issue with 3 aftermarket thermostats that were opening too early. Bought one from Nissan and my temps went back to normal

OEM Nissan, but slightly more conservative with cooling.

03’ E46 318ci with 130k miles and no issues with the whole cooling system. Neither the thermostat.

Replacing the Thermostat with a OEM part has solved the issue (with coolant flush) from a dealership.

I bought a 2022 X4 about a month ago from BMW. Had it for 2 weeks and got the same notification. Took it to BMW ( I got the warranty) and adjuster came in from the warranty people on Monday but haven’t approved the repair yet. They said it was also a thermostat. Seems like this is a common thing in these cars ? Mine is at 61k miles, bought it used and only had it for 2 MF weeks.

I replaced the t-stat with a genuine part and again no luck.