Thermostat OEM BMW or Motorcraft
The gasket looks fine. Normal procedure would be to buy a new one from BMW. always go OEM with the thermostat, there's a lot of shit knockoffs.
Your thermostat is probably stuck open. Replace it with an OEM Motorcraft version, not aftermarket.
I recently moved on from a 2016 X3 35i (N55) with a little over 100k miles on it. The only things to break on it were the thermostat and a control board for one of the headlight modules. When I replaced the thermostat I did the water pump as a precaution.
My 535i with the 740d thermostat sits at 90-95 during normal use, even sat stable at 95c during 40c weather in traffic. When beating on it in the mountains got it up to 99 at like 28c ambient.
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
Notice the radiator is leaking. Replace that. Car still not happy, cooling fans on full blast. Codes point to a thermostat, but the radiator hoses get warm. In my pea brain thermostats don't normally just sometimes go bad, they're typically either all broke or not broke. Ordered a thermostat from Trumplandia anyways.
I bought from FCP euro one of the OE water thermostat and water pump. The thermostat sticks open since new so I get check engine light on my M54 engine.
I have had brand new bmw thermostats not work and cause my car to get hot on the highway.
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.
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Which thermostat to choose — OEM BMW or Motorcraft?
If choosing thermostat across many manufacturers, check the part ranking. If your choice is down to two brands, the PartReview part comparisons help.
We compare thermostat across these categories:
- PR Score.
- Overall ranking.
- Vote balance.
- Average rating.
- Number of reviews.
- Feature ratings.
- Car owners’ choice.
Which thermostat are better — Motorcraft or OEM BMW?
In March 2026 on PartReview, thermostat Motorcraft were overall better than OEM BMW.
- OEM BMW received a PR Score of 60 out of 100, and Motorcraft scored 74 points.
- OEM BMW ranked 9 in the overall ranking, and Motorcraft ranked 8.
- The average rating is higher for Motorcraft (3.9) than for OEM BMW (3.1).
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Thermostat Motorcraft have better feature ratings than OEM BMW:
- Slow warm-up - owners believe, that this property for Motorcraft is better than OEM BMW.
- Cabin heat - drivers claim, that this property for Motorcraft is outperforms OEM BMW.
- Overheating - reviews suggest, that this property for OEM BMW is preferred to Motorcraft.
Which thermostat are more popular — OEM BMW or Motorcraft?
Thermostat OEM BMW and Motorcraft were equally popular according to data in March 2026.
By vote balance, thermostat Motorcraft surpassed OEM BMW:
- For OEM BMW, the ratio of positive (26) to negative (17) votes is 9 votes.
- For Motorcraft, the ratio of positive (23) to negative (8) votes is 15 votes.
By number of reviews, thermostat OEM BMW surpassed Motorcraft:
- For thermostat OEM BMW there are 14 reviews: 8 positive, 1 neutral, 5 negative.
- For thermostat Motorcraft there are 10 reviews: 7 positive, 1 neutral, 2 negative.
Which thermostat do car owners prefer — OEM BMW or Motorcraft?
In March 2026, according to PartReview, thermostat OEM BMW and Motorcraft have not taken top places in car-specific ratings. You can help by adding your review about these manufacturers.
Other comparisons of thermostat
If this comparison didn’t fully answer your question, there are many others on PartReview.
For example, comparisons of thermostat OEM BMW with: MotoRad, Wahler, OEM Volkswagen, Mahle, OEM Mazda, MOPAR, MISHIMOTO, Gates, OEM Nissan, OEM Audi.
Also available: comparisons of thermostat Motorcraft with: MotoRad, Wahler, OEM Volkswagen, Mahle, OEM Mazda, MOPAR, MISHIMOTO, Gates, OEM Nissan, OEM Audi.
You can also see who is better among other thermostat manufacturers: Wahler or MotoRad, OEM Volkswagen or MotoRad, Mahle or MotoRad, OEM Mazda or MotoRad, MOPAR or MotoRad.