Thermostat Wahler or OEM Nissan

PartReview Score

Rank #13 in ranking

-3

2.9

Cabin heat

1.8

Overheating

2.8

Slow warm-up

2.1

No data

PR Score

Ranking

Votes

Reviews

Average rating

Properties

Car

PartReview Score

Rank #2 in ranking

4.6

Overheating

4.5

Slow warm-up

5.0

No data

Reviews

All

Wahler

OEM Nissan

OEM Nissan › Thermostat

Forsaken-Cause-3839 5 Jan 2026, 17:02

Overheating:

Rating 5.0

replaced the thermostat with a factory Nissan OEM thermostat. Completely fixed the problem..

Pros: completely fixed problem

Vehicle: Nissan

Wahler › Thermostat

BMWMikeM 21 Dec 2025, 19:59

Rating 5.0

In the past and up to several months ago, I’ve always gone with Saleri (Italy) pumps and Wahler (Germany) thermostats for the M54 and have had great results.

Pros: great results

OEM Nissan › Thermostat

AideNo888 4 Dec 2025, 03:07

Rating 5.0

yes the part was OEM from nissan

Vehicle: Nissan

OEM Nissan › Thermostat

burn3344 6 Nov 2025, 23:27

Overheating:

Rating 5.0

I’ve had so many replacements fail in all my Nissans over the years that I just get an oem one from a dealer. Never had an oem one shit out yet.

Pros: OEM reliable, no failures

Vehicle: Nissan

Wahler › Thermostat

mrkprsn 3 Nov 2025, 15:07

Overheating:

Rating 4.5

I had a wahler thermostat and my temp range was 93-96

Pros: stable temperature range

Vehicle: BMW

Wahler › Thermostat

ricardovsanto 19 Dec 2018, 02:56

Overheating:

Rating 3.0

My 2007 MKV 2.5 Jetta is still having overheat problems even after changing the tstat to a OEM (Wahler) and the waterpump to one with metal impeller, which works way better than the original.

Pros: metal impeller works better

Cons: still having overheat problems

Vehicle: Volkswagen Jetta

Wahler › Thermostat

TheOnlyQueso 11 Dec 2025, 02:55

Rating 2.0

I recently changed the thermostat on my dad's car as well, I went with a wahler, and I'm observing the same things.

Cons: observing the same things

Wahler › Thermostat

jimjoe21 3 Nov 2025, 05:59

Slow warm-up:
Cabin heat:

Rating 0.5

I decided to try another thermostat, this time a Wahler and nothing has changed as the car will still not get up to temperature and no hot air.

Cons: car not reaching temperature, no hot air

Vehicle: BMW

OEM Nissan › Thermostat

Commercial-Ad-3566 8 Aug 2025, 04:31

Overheating:

Rating 1.0

I recently changed my thermostat due to my temp gauge occasionally dancing. The old thermostat appears to be bypassed as theres no actual thermostat in the housing. After putting on a new nissan one and oem gasket i bled the system with a overflow funnel for about 40 minutes until i stopped seeing bubble. Also using peak 50/50. Afterwards my overheating problem has gotten worse i overheat in about 10 minutes. I tried bleeding again and same results.

Cons: overheating problem worse

Vehicle: Nissan

Wahler › Thermostat

Fiendingas 4 Jun 2025, 06:01

Rating 0.5

I changed on mine 2-3 months ago with a new one from Wahler/Borg Warner and now it's leaking through the connector.

Cons: leaking through connector

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Which thermostat to choose — Wahler or OEM Nissan?

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 Wahler and OEM Nissan

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

Which thermostat are better — OEM Nissan or Wahler?

In March 2026 on PartReview, thermostat OEM Nissan were overall better than Wahler.

Wahler received a PR Score of 48 out of 100, and OEM Nissan scored 92 points.
Wahler ranked 13 in the overall ranking, and OEM Nissan ranked 2.
The average rating is higher for OEM Nissan (4.6) than for Wahler (2.9).
Thermostat OEM Nissan have better feature ratings than Wahler:
- Slow warm-up - owners believe, that this property for OEM Nissan is better than Wahler.
- Cabin heat - drivers claim, that this property for Wahler is outperforms OEM Nissan.
- Overheating - reviews suggest, that this property for OEM Nissan is preferred to Wahler.

Which thermostat are more popular — Wahler or OEM Nissan?

Thermostat Wahler and OEM Nissan were equally popular according to data in March 2026.

By vote balance, thermostat OEM Nissan surpassed Wahler:

For Wahler, the ratio of positive (41) to negative (44) votes is -3 votes.
For OEM Nissan, the ratio of positive (36) to negative (3) votes is 33 votes.

By number of reviews, thermostat Wahler surpassed OEM Nissan:

For thermostat Wahler there are 28 reviews: 13 positive, 1 neutral, 14 negative.
For thermostat OEM Nissan there are 13 reviews: 12 positive, 0 neutral, 1 negative.

Which thermostat do car owners prefer — Wahler or OEM Nissan?

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

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