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
Reviews of KOYORAD engine radiator
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125 votes
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koyorad on my 400hp Focus and never had over heating issues.
Pros: no over heating issues
Vehicle:
Ford Focus
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
I had read about people having good luck with the Kyorad brand so that's what I bought.
Pros: good luck with brand
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
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
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
The radiator you could go OEM or NVA, but Koyorad is proven solid also.
Pros: proven solid
Vehicle:
Nissan
For your turbo Baja, [Koyorad](https://ebay.us/m/yadARd) is the creme de la creme.
Pros: creme de la creme
Vehicle:
Subaru
I went with a Koyorad radiator from rock auto and then I also replaced the inlet and outlet hoses with OE. A new OE radiator cap, too. Subarus are fairly sensitive to cooling system parts, so for any mechanical bits (cap, water pump, thermostat, etc) I highly recommend spending on OE.
Pros: highly recommend spending on OE
Vehicle:
Subaru Forester
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What we know about KOYORAD engine radiator
The brand is registered in Japan. Official website: http://www.koyorad.co.jp/.
In March 2026, PartReview users have a positive opinion of KOYORAD engine radiator.
PR Score — 94 out of 100, based on 41 review and 125 votes. 38 positive reviews, 2 neutral reviews, 1 negative review. Average rating — 4.5 (out of 5). Vote balance: 118 up, 7 down.
In the ranking of the best engine radiator this part is at position 2, behind Koyo , but ahead of Nissens and Denso.
Users also evaluated the qualities of KOYORAD engine radiator:
- Overheating - engine runs hot in traffic or under load - rated positively. 4.6 points out of 5.
- Leaks - coolant drips or wet spots on the radiator or under the car - rated ambivalently. 2.7 points out of 5.
- Sweet smell - sweet coolant odor from under the hood - no rating yet
Engine radiator KOYORAD in car-specific ratings
See which car brands and models owners choose KOYORAD engine radiator for. Below are car-specific ratings where this part is in the Top-3:
- KOYORAD ranked #2 for: Toyota 4runner .
Engine radiator KOYORAD in comparisons
There are 8 comparisons of KOYORAD engine radiator with other manufacturers on PartReview.
In particular, see which engine radiator are better: KOYORAD or OEM Toyota, VALEO or KOYORAD, OEM Volkswagen or KOYORAD, OEM BMW or KOYORAD, Nissens or KOYORAD .