The Mopar stats (mfg by Motorad) can be had from Rockauto, and are generally well regarded, if more expensive than generic parts store units.
Pros: generally well regarded
Cons: more expensive
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I got a Mopar thermostat from the dealer a few months ago. Works much better than the previous two aftermarket units
Pros: works much better
In case anyone else comes across this post, it was the aftermarket thermostat. I managed to get a hold of a mopar one yesterday and the gasket around it was just slightly larger than the aftermarket one and needed a little bit of resistance to seat it. Now my truck is getting up to temperature quickly and working great.
Pros: truck working great
Cons: aftermarket thermostat bad
I replaced the thermostat in my wifes 2014 journey with the V6. It was an easy and straight forward job.
Pros: easy and straight forward
Vehicle:
Dodge Journey
I just bought one off RockAuto. I have to overhaul my entire coolant system and through some searching on this subreddit I saw a lot of people saying the Motorad brand kept failing after a few months. I didn\u2019t want to risk it so I opted for the Mopar thermostat from RockAuto for $35.
Cons: Motorad brand kept failing
Yep, these are a known bitch to bleed out the air, as well as aftermarket thermostat's not working well after replacement. I have seen some go thru a few to get one that works.
Cons: thermostat not working well
Vehicle:
Jeep
I highly suggest only getting genuine mopar. Myself and others have had issues with the generic part store thermostats that were fixed by using mopar.
Pros: genuine Mopar fixed issues
Cons: generic part store issues
Stick with Mopar thermostat. I went off brand and it didn\u2019t work correctly.
Cons: didn't work correctly
Vehicle:
Fiat 500
Oil cooler and radiator. I changed the thermostat when my radiator went. I would recommend using a mopar thermostat as I had two aftermarket fail on me
Pros: recommend using mopar
Cons: aftermarket fail
Vehicle:
Jeep
Mileage: 210000 km
I replaced mine with this one and it has been running perfectly for 6+ months after my original one stuck open. I would not buy anything other than Mopar.
Pros: running perfectly, long-term reliability
Vehicle:
Jeep Grand Cherokee
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What we know about MOPAR thermostat
The brand is registered in USA. Official website: https://www.mopar.com/en-us.html.
In March 2026, PartReview users have a mixed opinion of MOPAR thermostat.
PR Score — 73 out of 100, based on 18 reviews and 57 votes. 12 positive reviews, 3 neutral reviews, 3 negative reviews. Average rating — 3.8 (out of 5). Vote balance: 42 up, 15 down.
In the ranking of the best thermostat this part is at position 4, behind Gates and OEM Nissan , but ahead of AISIN and OEM Honda.
Users also evaluated the qualities of MOPAR thermostat:
- Slow warm-up - engine takes a long time to reach normal temperature - rated ambivalently. 3.1 points out of 5.
- Overheating - temperature gauge rises quickly or fluctuates - rated ambivalently. 3.3 points out of 5.
- Cabin heat - heater blows weakly or becomes too hot at the wrong time - rated positively. 5 points out of 5.
Thermostat MOPAR in car-specific ratings
See which car brands and models owners choose MOPAR thermostat for. Below are car-specific ratings where this part is in the Top-3:
- MOPAR ranked #1 in thermostat ratings for: Jeep Wrangler .
- MOPAR ranked #3 for: Jeep Grand Cherokee, Jeep Cherokee .
Thermostat MOPAR in comparisons
There are 14 comparisons of MOPAR thermostat with other manufacturers on PartReview.
In particular, see which thermostat are better: MOPAR or Motorcraft, MOPAR or OEM Honda, OEM Audi or MOPAR, MOPAR or Duralast, MOPAR or AISIN .