Reviews of KOYORAD parts For Business

Average Rating ? The manufacturer's average rating is calculated based on ratings of all its spare parts. It determines the place in the manufacturer ranking
2.8
Manufacturer Ranking
#185
42
Spare Parts
2
Country
Japan
Website
koyorad.co.jp
Spare Parts
KOYORAD Engine radiator
XterraTom
  • 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
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KOYORAD Engine radiator
PatrickGSR94
  • 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
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KOYORAD Engine radiator

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
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KOYORAD Engine radiator

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
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KOYORAD Engine radiator
yobo9193
  • Overheating:
Rating 2.5

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

Cons: regret not getting crossflow, perceived poor value
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Owner reviews of KOYORAD products

The KOYORAD brand is registered in Japan. Official website: http://www.koyorad.co.jp/ .

In March 2026, PartReview recorded 42 reviews across 2 parts by KOYORAD. Average rating — 2.8 out of 5.

KOYORAD is in the PartReview manufacturers ranking, currently at position 185. Over the last 30 days it dropped by 0 points.

Popular KOYORAD parts

The most popular KOYORAD products on PartReview:

  1. Engine radiator KOYORAD - 41 review. PR Score — 94, average rating — 4.5.
  2. Radiator cap KOYORAD - 1 review. PR Score — not available yet, average rating — 1.

Most owner reviews about KOYORAD parts are collected on these pages.

Top-rated KOYORAD parts

KOYORAD achieved top positions in these PartReview part rankings:

  1. Best engine radiator — ranked 2 among 9 manufacturers. Received 1069 votes.

Comparisons of KOYORAD parts

The most interesting comparisons of KOYORAD with other manufacturers help you see which is better:

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