Thermostat Mahle or AISIN

PartReview Score

Rank #12 in ranking

3.1

Cabin heat

1.5

Overheating

3.3

Slow warm-up

2.2

Owners' choice:

Jeep Grand Cherokee

PR Score

Ranking

Votes

Reviews

Average rating

Properties

Car

PartReview Score

Rank #5 in ranking

4.3

Cabin heat

2.0

Overheating

4.0

Slow warm-up

5.0

No data

Reviews

All

Mahle

AISIN

Mahle › Thermostat

Then-Cash-7226 12 Jan 2026, 23:29

Slow warm-up:

Rating 5.0

I’ve installed Borg Wagner thermostats and those always failed until I installed a Mahle one which never failed. For some reason any other brand will get stuck open and the engine will never get up to temp.

Pros: Mahle never failed

Cons: Borg Wagner always failed

Mahle › Thermostat

kemosabe6296 22 Dec 2025, 06:08

Slow warm-up:

Rating 4.0

I used Mahle, but I got lucky I got the German-made one (afaik now most are made in Italy). It was NOS so I expect the electrical heater (to open early) to be defect. It's been 3 years without issue though.

Pros: three years without issue

Cons: heater may be defect

Mahle › Thermostat

Beneficial_Juice_401 17 Dec 2025, 14:28

Rating 5.0

I used oem bmw coolant and a mahle thermostat.

Pros: oem coolant

Vehicle: BMW

Mileage: 3000 km

Mahle › Thermostat

PhaceN52 5 Dec 2025, 08:13

Rating 5.0

Mahle is an OE supplier for bmw, go for it

Pros: OE supplier

Vehicle: BMW

Mahle › Thermostat

analogrelease 5 Nov 2025, 17:27

Overheating:

Rating 4.0

Mahle is the OE replacement for the thermostat, the Chrysler logo is on the part but sanded down. Autozone sells them with PT# TI23695 I just replaced mine last weekend.

Pros: OE replacement, Chrysler logo

Vehicle: Jeep Grand Cherokee

Part number: TI23695

Mahle › Thermostat

zoubz13 13 Jan 2026, 03:21

Overheating:

Rating 3.0

I had a brand new mahle one with the connector wired in reverse for constant. Kept blowing a fuse. Returned it for a replacement and worked fine.

Pros: worked fine after replacement

Cons: connector wired in reverse

Mahle › Thermostat

chrome1453 5 Dec 2025, 22:49

Rating 3.0

Mahle is an OEM supplier and is on stock in Amazon.

Pros: OEM supplier, in stock

Mahle › Thermostat

Olafmihe 29 Nov 2025, 07:34

Overheating:

Rating 1.0

Hatte auch schon ein Mahle Thermostat das kurz nach eimbau defekt war. Dannach ein Originales von BMW rein und seit dem wi3der keine Probleme.

Cons: kurz nach eimbau defekt

AISIN › Thermostat

ziggo0 26 Dec 2024, 20:19

Overheating:
Cabin heat:

Rating 1.0

Aisin THF-003 thermostat was used (I believe this is what I'm regretting). It's like the thermostat isn't opening? Everything else seems fine - it's clearly getting hot. Little to no heat at idle. No circulation = overheating of the engine. Is the replacement thermostat stuck shut?

Cons: thermostat not opening, overheating engine, little to no heat

Vehicle: Subaru Impreza

Part number: THF-003

Mahle › Thermostat

Sharp_Carry_537 11 Dec 2024, 17:26

Overheating:

Rating 2.0

Last week changed the thermostat on my 1.9 tdi 66kW to a Mahle TX 15 87D (11€), it was fine for the first two days, then the temps started dropping again.

Pros: fine for first two days

Cons: temps dropping again

Part number: TX 15 87D

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Which thermostat to choose — Mahle or AISIN?

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 Mahle and AISIN

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

Which thermostat are better — AISIN or Mahle?

In March 2026 on PartReview, thermostat AISIN were overall better than Mahle.

Mahle received a PR Score of 54 out of 100, and AISIN scored 83 points.
Mahle ranked 12 in the overall ranking, and AISIN ranked 5.
The average rating is higher for AISIN (4.3) than for Mahle (3.1).
Thermostat AISIN have better feature ratings than Mahle:
- Cabin heat - owners believe, that this property for AISIN is better than Mahle.
- Overheating - drivers claim, that this property for AISIN is outperforms Mahle.
- Slow warm-up - reviews suggest, that this property for AISIN is preferred to Mahle.

Which thermostat are more popular — Mahle or AISIN?

Thermostat Mahle and AISIN were equally popular according to data in March 2026.

By vote balance, thermostat AISIN surpassed Mahle:

For Mahle, the ratio of positive (37) to negative (31) votes is 6 votes.
For AISIN, the ratio of positive (26) to negative (5) votes is 21 vote.

By number of reviews, thermostat Mahle surpassed AISIN:

For thermostat Mahle there are 21 review: 9 positive, 5 neutral, 7 negative.
For thermostat AISIN there are 10 reviews: 8 positive, 1 neutral, 1 negative.

Which thermostat do car owners prefer — Mahle or AISIN?

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

Mahle are chosen by owners of cars such as: Jeep Grand Cherokee, and others.

Thermostat AISIN 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 Mahle with: MotoRad, Wahler, OEM Volkswagen, OEM Mazda, MOPAR, MISHIMOTO, Gates, OEM BMW, OEM Nissan, OEM Audi.

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

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.