Thermostat MOPAR or OEM Mazda

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 #11 in ranking

3.1

Cabin heat

2.0

Overheating

3.3

Slow warm-up

2.3

No data

Reviews

All

MOPAR

OEM Mazda

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

OEM Mazda › Thermostat

whofladanger 23 Dec 2025, 00:29

Rating 4.0

I narrowed it down to a bad thermostat and bad radiator. I ordered the OEM Mazda parts for $450.00

Pros: OEM parts

Cons: bad thermostat

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

MOPAR › Thermostat

WTFpe0ple 8 Dec 2025, 13:02

Slow warm-up:
Overheating:

Rating 3.0

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

OEM Mazda › Thermostat

Actual_Muffin_1157 27 Jan 2026, 05:20

Cabin heat:

Rating 2.0

Batteries crap and so is the thermostat / heat and the trim on the steering wheel and gear shifter is thin and cheap and will come off everything else. Car is great

Pros: car is great (overall)

Cons: crap battery, cheap thermostat, trim comes off

Vehicle: Mazda

OEM Mazda › Thermostat

Right_Illustrator_10 26 Jan 2026, 22:49

Overheating:

Rating 2.0

I just got this fixed at the dealer on my 21. Its the thermostat. They put in over a million bad ones and don't want to own it with a recall so they sent out a TSB. There's also an extended warranty for all the cars for this part/labor.

Pros: fixed at dealer, extended warranty

Cons: defective part, no recall

Vehicle: Mazda

OEM Mazda › Thermostat

MathematicianRude809 26 Jan 2026, 21:16

Slow warm-up:
Cabin heat:

Rating 1.0

I replace thermostat even the whole block. Same issue. This fucking car don’t heat.

Cons: car doesn't heat, same issue

Vehicle: Mazda

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Which thermostat to choose — MOPAR or OEM Mazda?

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 OEM Mazda

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

Which thermostat are better — OEM Mazda or MOPAR?

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

MOPAR received a PR Score of 73 out of 100, and OEM Mazda scored 54 points.
MOPAR ranked 4 in the overall ranking, and OEM Mazda ranked 11.
The average rating is higher for MOPAR (3.8) than for OEM Mazda (3.1).
Thermostat MOPAR have better feature ratings than OEM Mazda:
- Slow warm-up - owners believe, that this property for MOPAR is better than OEM Mazda.
- Overheating - drivers claim, that by this property MOPAR does not differ from OEM Mazda.
- Cabin heat - reviews suggest, that this property for MOPAR is preferred to OEM Mazda.

Which thermostat are more popular — MOPAR or OEM Mazda?

Thermostat MOPAR and OEM Mazda were equally popular according to data in March 2026.

By vote balance, thermostat MOPAR surpassed OEM Mazda:

For MOPAR, the ratio of positive (42) to negative (15) votes is 27 votes.
For OEM Mazda, the ratio of positive (35) to negative (29) votes is 6 votes.

By number of reviews, thermostat OEM Mazda surpassed MOPAR:

For thermostat MOPAR there are 18 reviews: 12 positive, 3 neutral, 3 negative.
For thermostat OEM Mazda there are 20 reviews: 9 positive, 4 neutral, 7 negative.

Which thermostat do car owners prefer — MOPAR or OEM Mazda?

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

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

Thermostat OEM Mazda 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, MISHIMOTO, Gates, OEM BMW, OEM Nissan, OEM Audi, AISIN.

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