Engine radiator Denso or KOYORAD

PartReview Score

Rank #4 in ranking

4.2

Leaks

3.5

Overheating

4.6

Sweet smell

5.0

Owners' choice:

PR Score

Ranking

Votes

Reviews

Average rating

Properties

Car

PartReview Score

Rank #2 in ranking

111

4.5

Leaks

2.7

Overheating

4.6

No data

Reviews

All

Denso

KOYORAD

Denso › Engine radiator

Ok-Energy5358 28 Jan 2026, 20:30

Leaks:

Rating 5.0

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.

Pros: zero leaks

Vehicle: Toyota 4runner

Mileage: 65000 km

KOYORAD › Engine radiator

Omega_Eggshell 20 Jan 2026, 21:58

Overheating:

Rating 5.0

I got a Koyorad and 0 issues with overheating with hard driving! Coolant stays at operating temp no matter what.

Pros: no issues with overheating

KOYORAD › Engine radiator

RedhawkST 8 Jan 2026, 22:48

Overheating:

Rating 5.0

koyorad on my 400hp Focus and never had over heating issues.

Pros: no over heating issues

Vehicle: Ford Focus

KOYORAD › Engine radiator

XterraTom 8 Jan 2026, 21:04

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

KOYORAD › Engine radiator

benh509 3 Jan 2026, 18:46

Rating 4.0

I had read about people having good luck with the Kyorad brand so that's what I bought.

Pros: good luck with brand

Denso › Engine radiator

Aerzon_ 31 Dec 2025, 00:48

Leaks:

Rating 5.0

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.

Pros: Hasn't leaked at all

Cons: hole in the box

Vehicle: Toyota

KOYORAD › Engine radiator

PatrickGSR94 27 Dec 2025, 23:50

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

KOYORAD › Engine radiator

Basedgodnick420 26 Dec 2025, 20:30

Rating 4.0

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

Denso › Engine radiator

sdn 24 Dec 2025, 17:13

Rating 3.0

I ended up replacing the radiator *and the hose*s myself with a denso radiator.

Pros: denso radiator

Cons: leaked initially

Vehicle: Subaru

Denso › Engine radiator

Real_Education352 6 Nov 2025, 16:21

Overheating:

Rating 1.0

Get the Denso radiator from rockauto. I tried eBay crap once and it barely lasted a year

Pros: available from rockauto

Cons: eBay crap lasted a year

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Which engine radiator to choose — Denso or KOYORAD?

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:

Comparison of engine radiator Denso and KOYORAD

PR Score.
Overall ranking.
Vote balance.
Average rating.
Number of reviews.
Feature ratings.
Car owners’ choice.

Which engine radiator are better — KOYORAD or Denso?

In March 2026 on PartReview, engine radiator KOYORAD were overall better than Denso.

Denso received a PR Score of 82 out of 100, and KOYORAD scored 94 points.
Denso ranked 4 in the overall ranking, and KOYORAD ranked 2.
The average rating is higher for KOYORAD (4.5) than for Denso (4.2).
Engine radiator KOYORAD have better feature ratings than Denso:
- Leaks - owners believe, that this property for Denso is better than KOYORAD.
- Overheating - drivers claim, that by this property Denso does not differ from KOYORAD.
- Sweet smell - reviews suggest, that this property for Denso is preferred to KOYORAD.

Which engine radiator are more popular — Denso or KOYORAD?

In March 2026 on PartReview, engine radiator KOYORAD were overall more popular than Denso.

By vote balance, engine radiator KOYORAD surpassed Denso:

For Denso, the ratio of positive (99) to negative (21) votes is 78 votes.
For KOYORAD, the ratio of positive (118) to negative (7) votes is 111 votes.

By number of reviews, engine radiator KOYORAD surpassed Denso:

For engine radiator Denso there are 39 reviews: 31 positive, 3 neutral, 5 negative.
For engine radiator KOYORAD there are 41 review: 38 positive, 2 neutral, 1 negative.

Which engine radiator do car owners prefer — Denso or KOYORAD?

In March 2026, according to PartReview, engine radiator Denso led more car-specific ratings than KOYORAD:

Denso are chosen by owners of cars such as: Toyota 4runner, Toyota Land Cruiser, 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.

Other comparisons of engine radiator

If this comparison didn’t fully answer your question, there are many others on PartReview.

For example, comparisons of engine radiator Denso with: MISHIMOTO, Koyo, Nissens, OEM Volkswagen, OEM BMW, VALEO, OEM Toyota.

Also available: comparisons of engine radiator KOYORAD with: MISHIMOTO, Koyo, Nissens, 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.