my 2005 4Runner Limited 4WD V8 that I bought one year ago with only 55k miles on it (well maintained time capsule), was just fine. Zero leaks from the radiator or anything. At 65k miles I went ahead and replaced the radiator with a Denso unit.
I figured going from a life in SoCal to southeast Texas summers would tax the radiator. Plus, 55k miles in 20 years, and now I’ll put about 20k miles a year on it, would likely make the original radiator go pop at the most inconvenient time, surely.
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.
I just got a new Denso radiator off of rock auto for a Tacoma. It didn't look much better than this. Had a hole in the box from shipping. Installed. Hasn't leaked at all.
This happened to my 4Runner recently. New denso radiator from Rockauto was $150.
I put a Denso radiator in my wife's car.
It was packaged very well and arrived completely undamaged. It was a perfect fit.
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.
I ended up replacing the radiator *and the hose*s myself with a denso radiator.
Get the Denso radiator from rockauto. I tried eBay crap once and it barely lasted a year
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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 Denso.
In March 2026 on PartReview, engine radiator Koyo were overall more popular than Denso.
By vote balance, engine radiator Koyo surpassed Denso:
By number of reviews, engine radiator Koyo surpassed Denso:
In March 2026, according to PartReview, engine radiator Denso led more car-specific ratings than Koyo:
Denso are chosen by owners of cars such as: Toyota 4runner, Toyota Land Cruiser, and others.
Koyo are chosen by owners of cars such as: Honda S2000, 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, OEM Volkswagen, OEM BMW, VALEO, OEM Toyota.
Also available: comparisons of engine radiator Denso with: MISHIMOTO, Nissens, KOYORAD, 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.
