The Mopar stats (mfg by Motorad) can be had from Rockauto, and are generally well regarded, if more expensive than generic parts store units.
I got a Mopar thermostat from the dealer a few months ago. Works much better than the previous two aftermarket units
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.
I replaced the thermostat in my wifes 2014 journey with the V6. It was an easy and straight forward job.
I only use Gates now after some cheap ones failed but didn't leak. Gates are very good. I have not had to replace one.
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.
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.
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.
Stick with Mopar thermostat. I went off brand and it didn\u2019t work correctly.
I installed a Gates one a couple months back and it worked well for a little while; engine got up to operating temp fairly quickly and stayed there, but now it’s running really cold no matter how long or how hard I drive it. Think it’s stuck open.
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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:
In March 2026 on PartReview, thermostat Gates were overall better than MOPAR.
Thermostat MOPAR and Gates were equally popular according to data in March 2026.
By vote balance, thermostat Gates surpassed MOPAR:
By number of reviews, thermostat MOPAR surpassed Gates:
In March 2026, according to PartReview, these manufacturers led the same number of car-specific ratings:
MOPAR are chosen by owners of cars such as: Jeep Wrangler, and others.
Gates are chosen by owners of cars such as: Dodge RAM, and others.
If this comparison didn’t fully answer your question, there are many others on PartReview.
For example, comparisons of thermostat MOPAR with: MotoRad, Wahler, OEM Volkswagen, Mahle, OEM Mazda, MISHIMOTO, OEM BMW, OEM Nissan, OEM Audi, AISIN.
Also available: comparisons of thermostat Gates with: MotoRad, Wahler, OEM Volkswagen, Mahle, OEM Mazda, MISHIMOTO, OEM BMW, OEM Nissan, OEM Audi, Duralast.
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.
