Engine radiator OEM BMW or KOYORAD

PartReview Score

Rank #9 in ranking

3.0

Leaks

2.1

Overheating

3.1

Sweet smell

5.0

No data

PR Score

Ranking

Votes

Reviews

Average rating

Properties

Car

PartReview Score

Rank #2 in ranking

111

4.5

Leaks

2.7

Overheating

4.6

No data

Reviews

All

OEM BMW

KOYORAD

KOYORAD › Engine radiator

Omega_Eggshell 20 Jan 2026, 21:58

Overheating:

Rating 5.0

I got a Koyorad and 0 issues with overheating with hard driving! Coolant stays at operating temp no matter what.

Pros: no issues with overheating

KOYORAD › Engine radiator

RedhawkST 8 Jan 2026, 22:48

Overheating:

Rating 5.0

koyorad on my 400hp Focus and never had over heating issues.

Pros: no over heating issues

Vehicle: Ford Focus

KOYORAD › Engine radiator

XterraTom 8 Jan 2026, 21:04

Overheating:

Rating 5.0

I replaced my 2010 factory Calsonic with a Kyorad 2807, there were lots of favorable comments on thenewx forum. 18 months later, still going.

Pros: still going after months

Vehicle: Nissan

Part number: 2807

KOYORAD › Engine radiator

benh509 3 Jan 2026, 18:46

Rating 4.0

I had read about people having good luck with the Kyorad brand so that's what I bought.

Pros: good luck with brand

KOYORAD › Engine radiator

PatrickGSR94 27 Dec 2025, 23:50

Overheating:

Rating 4.0

On my Miata with the factory flawed OEM coolant routing, I run a Koyorad 36mm aluminum radiator with OEM fans and it keeps temps a bit cooler than stock.

Pros: keeps temps cooler

Vehicle: Mazda

KOYORAD › Engine radiator

Basedgodnick420 26 Dec 2025, 20:30

Rating 4.0

I changed out the intake (noise maker but I love it) then everything that connects so the turbo inlet and bpv, charge pipe and a bigger tmic. A engine that can breath will be healthy.

Pros: engine can breath

Cons: noise maker

KOYORAD › Engine radiator

Divisible_by_0 24 Dec 2025, 16:55

Leaks:

Rating 5.0

This specific spot fails on almost every subaru radiator i have worked on.

If you are lucky KoyoRad still has their sale going, I just got an aluminum radiator from my 97 legacy for $180

Pros: aluminum radiator, good price

Vehicle: Porsche

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

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

OEM BMW › Engine radiator

SupMojo000 29 Jul 2025, 23:46

Overheating:

Rating 1.0

You need to replace that. Bmws run hot. Only fix

Vehicle: BMW

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Which engine radiator to choose — OEM BMW or KOYORAD?

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 OEM BMW and KOYORAD

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

Which engine radiator are better — KOYORAD or OEM BMW?

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

OEM BMW received a PR Score of 55 out of 100, and KOYORAD scored 94 points.
OEM BMW ranked 9 in the overall ranking, and KOYORAD ranked 2.
The average rating is higher for KOYORAD (4.5) than for OEM BMW (3).
Engine radiator KOYORAD have better feature ratings than OEM BMW:
- Overheating - owners believe, that this property for KOYORAD is better than OEM BMW.
- Leaks - drivers claim, that this property for KOYORAD is outperforms OEM BMW.
- Sweet smell - reviews suggest, that this property for OEM BMW is preferred to KOYORAD.

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

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

By vote balance, engine radiator KOYORAD surpassed OEM BMW:

For OEM BMW, the ratio of positive (31) to negative (25) votes is 6 votes.
For KOYORAD, the ratio of positive (118) to negative (7) votes is 111 votes.

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

For engine radiator OEM BMW there are 18 reviews: 9 positive, 2 neutral, 7 negative.
For engine radiator KOYORAD there are 41 review: 38 positive, 2 neutral, 1 negative.

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

In March 2026, according to PartReview, engine radiator OEM BMW and KOYORAD 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 OEM BMW with: MISHIMOTO, Koyo, Nissens, Denso, OEM Volkswagen, VALEO, OEM Toyota.

Also available: comparisons of engine radiator KOYORAD with: MISHIMOTO, Koyo, Nissens, 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.