Put a koyo rad in it and it’s been good to go.
I got a Koyorad and 0 issues with overheating with hard driving! Coolant stays at operating temp no matter what.
If you go aluminum Koyo is the way to go.
koyorad on my 400hp Focus and never had over heating issues.
I went with Koyo. CARid was the best price at the time. Been 7 years and no issues.
I replaced my 2010 factory Calsonic with a Kyorad 2807, there were lots of favorable comments on thenewx forum. 18 months later, still going.
I had read about people having good luck with the Kyorad brand so that's what I bought.
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.
I went with a Koyorad, but for how much I’ve spent, I should have gone with a crossflow (either Supermiata or Flyin Miata). I also did a coolant reroute, which made me really regret not getting a crossflow
When I ordered a koyorad I didn’t get this in the box. I sent back what I got from them it was all dented and didn’t fit.
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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:
In March 2026 on PartReview, engine radiator Koyo were overall better than KOYORAD.
In March 2026 on PartReview, engine radiator Koyo were overall more popular than KOYORAD.
By vote balance, engine radiator Koyo surpassed KOYORAD:
By number of reviews, engine radiator Koyo surpassed KOYORAD:
In March 2026, according to PartReview, engine radiator Koyo led more car-specific ratings than KOYORAD:
Koyo are chosen by owners of cars such as: Honda S2000, and others.
Engine radiator KOYORAD have not yet taken leading positions in car-specific ratings. You can help by adding a review and specifying your car.
If this comparison didn’t fully answer your question, there are many others on PartReview.
For example, comparisons of engine radiator Koyo with: MISHIMOTO, Nissens, Denso, OEM Volkswagen, OEM BMW, VALEO, OEM Toyota.
Also available: comparisons of engine radiator KOYORAD with: MISHIMOTO, Nissens, Denso, OEM Volkswagen, OEM BMW, 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.
