Put a koyo rad in it and it’s been good to go.
If you go aluminum Koyo is the way to go.
I went with Koyo. CARid was the best price at the time. Been 7 years and no issues.
Radiators aren\u2019t supposed to leak. I have the same Koyo radiator in my NA Z, just put it in this past summer. I def do not have that leak.
Personally I’d be buying a koyo in full aluminum.
In the year I’ve had it, it’s cost me a new radiator that had split.
I went with a Koyo radiator, which is considerably better built than the factory piece, cost less than $300 with new hoses, and took maybe 2 hours, start to finish. Of course, I replaced the coolant at the same time.
just tested my new koyo hyper V at the track and that thing kept it rock solid cold, 180-203f the entire day but it was like 68 degrees out lol.
Right now I've got a 2015 Polo GTI 7 speed. It's got about 100,000ks, I'm the second owner. In the year or so since I've had it, apart from normal things like brake pads, I've replaced: Radiator
I needed to replace the entire radiator in the GTI to get a check engine light to go away.
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Engine radiator MISHIMOTO or Koyo
Engine radiator MISHIMOTO or Nissens
Engine radiator MISHIMOTO or KOYORAD
Engine radiator MISHIMOTO or Denso
Engine radiator MISHIMOTO or OEM Volkswagen
Engine radiator MISHIMOTO or OEM BMW
Engine radiator Koyo or Nissens
Engine radiator VALEO or MISHIMOTO
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 OEM Volkswagen.
In March 2026 on PartReview, engine radiator Koyo were overall more popular than OEM Volkswagen.
By vote balance, engine radiator Koyo surpassed OEM Volkswagen:
By number of reviews, engine radiator Koyo surpassed OEM Volkswagen:
In March 2026, according to PartReview, these manufacturers led the same number of car-specific ratings:
Koyo are chosen by owners of cars such as: Honda S2000, and others.
OEM Volkswagen are chosen by owners of cars such as: Volkswagen Jetta, and others.
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, KOYORAD, Denso, OEM BMW, VALEO, OEM Toyota.
Also available: comparisons of engine radiator OEM Volkswagen with: MISHIMOTO, Nissens, KOYORAD, Denso, 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.
