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Spare parts reviews ➔ All comparisons ➔ MISHIMOTO ➔ Motorcraft

Thermostat MISHIMOTO or Motorcraft

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MISHIMOTO
Motorcraft
MISHIMOTO › Thermostat
mooseman923
  • Overheating:
Rating 5.0

It’s now got an 85°c Mishimoto thermostat. Took it out today and got it up to temp and did multiple 0-85mph pulls. The new thermostat opens at 85°C/185°F. Under load the coolant never registered above 197°F!!!!

Pros: coolant stable, low temperature
Vehicle: Volvo XC70
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Motorcraft › Thermostat
Retentismal
  • Overheating:
Rating 5.0

I used a motorcraft RT-1139 thermostat. Comes with a jiggle valve to help bleed air already installed and cost me 8 bucks. You won’t find any place that says they fit other than some forum posts but they do indeed work, I installed one on my MJ with the only issue being me not refilling the radiator after dumping all the coolant.

Pros: works well, jiggle valve, good value
Vehicle: Jeep
Part number: RT-1139
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MISHIMOTO › Thermostat
Ben_805
  • Overheating:
Rating 3.0

I spent a good chunk of change on the Mishimoto thermostat and it got stuck closed within a couple months. Needed the car back right away and all I could get was a dirt cheap MotorRad one. Darn thing has been it in now without issue for a good long while now.

Pros: working without issue
Cons: stuck closed quickly
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MISHIMOTO › Thermostat
EnKryptedToast1
  • Overheating:
Rating 3.0

I wanted to upgrade from plastic and got an aluminum Mishimoto thermostat, but i didn’t notice that it opens at 180°. Can i get away with the 180° thermostat, or should i ship it back and re-order a different, higher rated thermostat?

Pros: aluminum, upgrade from plastic
Cons: wrong opening temperature
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MISHIMOTO › Thermostat
king1fluffy
  • Overheating:
Rating 0.5

Get that mishimoto garbage out of there and put a new oem thermostat in there. Unless you really lile pulling the engine out, to replace coolant seals and rusted rotors...

Cons: poor quality, causes damage
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MISHIMOTO › Thermostat
Winter_Property4986
  • Overheating:
Rating 1.0

Même souci sur 350Z

Le thermostat Mishimoto s'ouvre à 82° au lieu de 68°/ la réponse du constructeur → du moment ou la température reste stable !!!!!!!!!

Je suis énormément déçu de cette réponse surtout au prix et frais de douanes que cela comporte.

Cons: s'ouvre à mauvaise température, déçu de la réponse, frais de douanes
Vehicle: Nissan
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Which thermostat to choose — MISHIMOTO 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:

Comparison of thermostat MISHIMOTO and Motorcraft
  1. PR Score.
  2. Overall ranking.
  3. Vote balance.
  4. Average rating.
  5. Number of reviews.
  6. Feature ratings.
  7. Car owners’ choice.

Which thermostat are better — Motorcraft or MISHIMOTO?

In March 2026 on PartReview, thermostat Motorcraft were overall better than MISHIMOTO.

  1. MISHIMOTO received a PR Score of 32 out of 100, and Motorcraft scored 74 points.
  2. MISHIMOTO ranked 14 in the overall ranking, and Motorcraft ranked 8.
  3. The average rating is higher for Motorcraft (3.9) than for MISHIMOTO (2.2).
  4. Thermostat Motorcraft have better feature ratings than MISHIMOTO:
    • Overheating - owners believe, that this property for Motorcraft is better than MISHIMOTO.
    • Slow warm-up - drivers claim, that this property for Motorcraft is outperforms MISHIMOTO.
    • Cabin heat - reviews suggest, that this property for Motorcraft is preferred to MISHIMOTO.

Which thermostat are more popular — MISHIMOTO or Motorcraft?

Thermostat MISHIMOTO and Motorcraft were equally popular according to data in March 2026.

By vote balance, thermostat Motorcraft surpassed MISHIMOTO:

  • For MISHIMOTO, the ratio of positive (16) to negative (34) votes is -18 votes.
  • For Motorcraft, the ratio of positive (23) to negative (8) votes is 15 votes.

By number of reviews, thermostat MISHIMOTO surpassed Motorcraft:

Which thermostat do car owners prefer — MISHIMOTO or Motorcraft?

In March 2026, according to PartReview, thermostat MISHIMOTO 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 MISHIMOTO with: MotoRad, Wahler, OEM Volkswagen, Mahle, OEM Mazda, MOPAR, Gates, OEM BMW, OEM Nissan, OEM Audi.

Also available: comparisons of thermostat Motorcraft with: MotoRad, Wahler, OEM Volkswagen, Mahle, OEM Mazda, MOPAR, Gates, OEM BMW, 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.

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