Engine radiator MISHIMOTO or OEM BMW

PartReview Score

Rank #5 in ranking

3.5

Leaks

2.8

Overheating

4.1

Sweet smell

5.0

No data

PR Score

Ranking

Votes

Reviews

Average rating

Properties

Car

PartReview Score

Rank #9 in ranking

3.0

Leaks

2.1

Overheating

3.1

Sweet smell

5.0

No data

Reviews

All

MISHIMOTO

OEM BMW

MISHIMOTO › Engine radiator

manzin82 20 Jan 2026, 18:17

Leaks:

Rating 5.0

I got a Mishimoto with zero issues and fitment was spot on

Pros: zero issues, spot on

MISHIMOTO › Engine radiator

Keith_13 3 Jan 2026, 23:51

Overheating:

Rating 4.0

And don't put the oem radiator in (it sucks). A mishimoto is 2/3 the price, will last longer (it's not made of plastic at the top -- that's why the oem ones fail) and it will actually keep your engine a little cooler.

Pros: lasts longer, keeps cooler

Cons: oem ones fail

Vehicle: Subaru Impreza

MISHIMOTO › Engine radiator

brandothesavage 24 Dec 2025, 15:48

Leaks:

Rating 5.0

If u get a mishimoto it won't break again

Pros: durable radiator

MISHIMOTO › Engine radiator

froebull 15 Dec 2025, 19:55

Rating 4.0

I like my Mishimoto one. But I have an Auto, and the only one they had for the Baja didn't have the cooler built in, so I had to run an external trans cooler. But it all went easy, even with that. Electric fans and catch tank bolted right up no problem

Pros: easy installation

Cons: external trans cooler needed

Vehicle: Subaru

MISHIMOTO › Engine radiator

b_ron 12 Dec 2025, 05:07

Rating 5.0

Exact thing happened to me last year. Replaced with a Mishimoto

Vehicle: Honda S2000

OEM BMW › Engine radiator

Remarkable_Leave_294 20 Nov 2025, 11:15

Leaks:

Rating 3.0

It happened to me once at a night time. I just pulled over, stopped the engine and started again after several minutes and everything was OK.

Edit: After reading other's comments, I realized that mine also related to coolant system. Some time after this incident I replaced radiator because of a coolant leak. May be this warning is related to that.

Pros: Everything was OK

Cons: coolant leak

MISHIMOTO › Engine radiator

Coupe368 2 Mar 2025, 17:42

Leaks:

Rating 2.5

The crap-tastic mishimoto MMRAD-E36-92 that I use these days do come with a lifetime warranty and I send them photos of the leak and they just send me a replacement in a week or so. I have purchased 6 of them and replaced 2 under warranty. The "Z3" raditator won't fit as its too thick, but the Z3 IS and e36 so its confusing.

Pros: lifetime warranty, easy replacement

Cons: crap-tastic, pinhole leaks, poor welds, Z3 fitment issues

Vehicle: BMW

Part number: MMRAD-E36-92

MISHIMOTO › Engine radiator

TwOhsinGoose 28 Jan 2026, 17:59

Leaks:

Rating 1.0

My mishimoto radiator sprung a leak after 1.5 years in my F150. So good luck.

Cons: sprung a leak

Vehicle: Ford

OEM BMW › Engine radiator

ronbiomed 10 Jan 2026, 15:05

Overheating:
Leaks:

Rating 1.0

My first non warranty repair on my B58 540 was a $3k radiator replacement. That was at about 60k miles.

Cons: expensive radiator replacement

Vehicle: BMW

Mileage: 96560 km

MISHIMOTO › Engine radiator

Ok-Fish-9244 19 Dec 2025, 06:16

Overheating:

Rating 2.0

Get a csf or koyorad. Mishimoto isn’t that great

Cons: not that great

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Which engine radiator to choose — MISHIMOTO or OEM BMW?

If choosing engine radiator across many manufacturers, check the part ranking. If your choice is down to two brands, the PartReview part comparisons help.

We compare engine radiator across these categories:

Comparison of engine radiator MISHIMOTO and OEM BMW

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

Which engine radiator are better — OEM BMW or MISHIMOTO?

In March 2026 on PartReview, engine radiator MISHIMOTO were overall better than OEM BMW.

MISHIMOTO received a PR Score of 65 out of 100, and OEM BMW scored 55 points.
MISHIMOTO ranked 5 in the overall ranking, and OEM BMW ranked 9.
The average rating is higher for MISHIMOTO (3.5) than for OEM BMW (3).
Engine radiator MISHIMOTO have better feature ratings than OEM BMW:
- Leaks - owners believe, that this property for MISHIMOTO is better than OEM BMW.
- Overheating - drivers claim, that this property for MISHIMOTO is outperforms OEM BMW.
- Sweet smell - reviews suggest, that by this property MISHIMOTO does not differ from OEM BMW.

Which engine radiator are more popular — MISHIMOTO or OEM BMW?

In March 2026 on PartReview, engine radiator MISHIMOTO were overall more popular than OEM BMW.

By vote balance, engine radiator MISHIMOTO surpassed OEM BMW:

For MISHIMOTO, the ratio of positive (195) to negative (105) votes is 90 votes.
For OEM BMW, the ratio of positive (31) to negative (25) votes is 6 votes.

By number of reviews, engine radiator MISHIMOTO surpassed OEM BMW:

For engine radiator MISHIMOTO there are 95 reviews: 55 positive, 15 neutral, 25 negative.
For engine radiator OEM BMW there are 18 reviews: 9 positive, 2 neutral, 7 negative.

Which engine radiator do car owners prefer — MISHIMOTO or OEM BMW?

In March 2026, according to PartReview, engine radiator MISHIMOTO and OEM BMW have not taken top places in car-specific ratings. You can help by adding your review about these manufacturers.

Other comparisons of engine radiator

If this comparison didn’t fully answer your question, there are many others on PartReview.

For example, comparisons of engine radiator MISHIMOTO with: Koyo, Nissens, KOYORAD, Denso, OEM Volkswagen, VALEO, OEM Toyota.

Also available: comparisons of engine radiator OEM BMW with: Koyo, Nissens, KOYORAD, Denso, OEM Volkswagen, VALEO, OEM Toyota.

You can also see who is better among other engine radiator manufacturers: MISHIMOTO or Koyo, MISHIMOTO or Nissens, MISHIMOTO or KOYORAD, MISHIMOTO or Denso, MISHIMOTO or OEM Volkswagen.