Thermostat MOPAR or MISHIMOTO

PartReview Score

Rank #4 in ranking

3.8

Cabin heat

5.0

Overheating

3.3

Slow warm-up

3.1

Owners' choice:

Jeep Wrangler

PR Score

Ranking

Votes

Reviews

Average rating

Properties

Car

PartReview Score

Rank #14 in ranking

-18

2.2

Overheating

2.7

Slow warm-up

2.8

No data

Reviews

All

MOPAR

MISHIMOTO

MOPAR › Thermostat

NotoriousSouthpaw 24 Jan 2026, 23:33

Overheating:

Rating 4.0

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

MOPAR › Thermostat

squeekyball 8 Jan 2026, 03:09

Slow warm-up:
Overheating:

Rating 4.0

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

MOPAR › Thermostat

DerpiestDave 1 Jan 2026, 18:59

Slow warm-up:

Rating 5.0

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

MOPAR › Thermostat

flyin-lowe 22 Dec 2025, 18:07

Rating 5.0

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

MOPAR › Thermostat

browning1396 17 Dec 2025, 03:06

Overheating:

Rating 3.0

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

MISHIMOTO › Thermostat

Ben_805 16 Dec 2025, 23:22

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

MOPAR › Thermostat

harrington3927 1 Dec 2025, 17:28

Overheating:

Rating 1.0

Stick with Mopar thermostat. I went off brand and it didn\u2019t work correctly.

Cons: didn't work correctly

Vehicle: Fiat 500

MOPAR › Thermostat

healthyspecialk 30 Sep 2025, 06:20

Slow warm-up:
Overheating:

Rating 1.0

The thermostat failed twice. Once at like 80k miles and again at 115k miles. The second time it failed I replaced it with an aftermarket one that had a metal stem instead of plastic. It made it until we traded it in.

Pros: aftermarket lasted

Cons: failed twice, plastic stem

Vehicle: Jeep Renegade

Mileage: 80000 km

MISHIMOTO › Thermostat

king1fluffy 24 May 2025, 20:21

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

MISHIMOTO › Thermostat

RyanGout 24 May 2025, 16:44

Overheating:

Rating 1.0

please remove the mishimoto thermostat they fail a lot, it happened to me as well.

Cons: frequent failures

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Which thermostat to choose — MOPAR or MISHIMOTO?

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 MOPAR and MISHIMOTO

PR Score.
Overall ranking.
Vote balance.
Average rating.
Number of reviews.
Feature ratings.
Car owners’ choice.

Which thermostat are better — MISHIMOTO or MOPAR?

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

MOPAR received a PR Score of 73 out of 100, and MISHIMOTO scored 32 points.
MOPAR ranked 4 in the overall ranking, and MISHIMOTO ranked 14.
The average rating is higher for MOPAR (3.8) than for MISHIMOTO (2.2).
Thermostat MOPAR have better feature ratings than MISHIMOTO:
- Slow warm-up - owners believe, that this property for MOPAR is better than MISHIMOTO.
- Overheating - drivers claim, that this property for MOPAR is outperforms MISHIMOTO.
- Cabin heat - reviews suggest, that this property for MOPAR is preferred to MISHIMOTO.

Which thermostat are more popular — MOPAR or MISHIMOTO?

In March 2026 on PartReview, thermostat MOPAR were overall more popular than MISHIMOTO.

By vote balance, thermostat MOPAR surpassed MISHIMOTO:

For MOPAR, the ratio of positive (42) to negative (15) votes is 27 votes.
For MISHIMOTO, the ratio of positive (16) to negative (34) votes is -18 votes.

By number of reviews, thermostat MOPAR surpassed MISHIMOTO:

For thermostat MOPAR there are 18 reviews: 12 positive, 3 neutral, 3 negative.
For thermostat MISHIMOTO there are 16 reviews: 4 positive, 2 neutral, 10 negative.

Which thermostat do car owners prefer — MOPAR or MISHIMOTO?

In March 2026, according to PartReview, thermostat MOPAR led more car-specific ratings than MISHIMOTO:

MOPAR are chosen by owners of cars such as: Jeep Wrangler, and others.

Thermostat MISHIMOTO have not yet taken leading positions in car-specific ratings. You can help by adding a review and specifying your car.

Other comparisons of thermostat

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, Gates, OEM BMW, OEM Nissan, OEM Audi, AISIN.

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