Engine radiator VALEO or Koyo

Koyo Engine radiator
tblax44
  • Leaks:
Rating 5.0

I have a Koyo radiator on my 2019 and am really impressed with it. You get a thicker core and all aluminum construction so you don't have to deal with the metal/plastic interface of the OEM one that can crack/leak over time.

Pros: thicker core, all aluminum construction
Vehicle: Subaru
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Koyo Engine radiator
thedezz
  • Overheating:
Rating 5.0

I've been using an OEM style Koyo Radiator for the last 10 years on a clutch fan. Multiple track days and never any overheating issues.

Pros: no overheating issues, long-term reliability
Vehicle: Nissan
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Koyo Engine radiator

I opted for a stock replacement Koyo with the plastic end tanks again. It'll get you buy for another 10-15 years and 100k miles.

Pros: long lifespan, reliable
Vehicle: Subaru
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Koyo Engine radiator
OptionXIII
  • Overheating:
Rating 5.0

My koyo was bought secondhand, has done many track days and 40k street miles over 5 years, and I even accidentally tried to jack up the car with it. It's still going fine.

Pros: durable, long-lasting, reliable
Vehicle: Mazda
Mileage: 40000 km
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VALEO Engine radiator
ATBB
  • Overheating:
Rating 4.0

I replaced my radiator several times, always due to corrosion at the bottom edge where brine accumulates. Last time I replaced it for Valeo and for sure it had same design as your "new", which is a stamped aluminium sheets stuck on cylindrical piping. So far so good.

Pros: stamped aluminium sheets
Cons: corrosion at bottom edge
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Koyo Engine radiator
FUMBLESTEIN
  • Overheating:
Rating 5.0

Had a Koyo on mine, it was perfect and kept the car cool year round in Southern California even in the canyons on 100+ degree days. It also handled track days without a hiccup

Pros: perfect performance, kept car cool, handled track days
Vehicle: Honda S2000
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