Best Engine radiator for Toyota 4runner

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Rank	Manufacturers	Ratings	Avg. rating	Votes	Reviews	Positive	Neutral	Negative
1.	Denso	54%	4.5	30	11	10	1	0
2.	KOYORAD	16%	4.1	9	5	4	0	1
3.	Koyo	5%	4.5	3	1	1	0	0
4.	OEM Toyota	5%	5.0	3	1	1	0	0

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Denso › Engine radiator

Ok-Energy5358 28 Jan 2026, 20:30

Rating 5.0

Leaks:

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

Denso › Engine radiator

kjc-01 24 Dec 2025, 20:56

Rating 5.0

This happened to my 4Runner recently. New denso radiator from Rockauto was $150.

Pros: new denso radiator

Vehicle: Toyota 4runner

Denso › Engine radiator

Jermagesty 2 Dec 2025, 21:26

Rating 5.0

Get a Denso on Rock Auto for 130 and replace it yourself. Watch a YouTube video on how to do it and save yourself a bunch of coin.

Pros: save yourself coin

Vehicle: Toyota 4runner

KOYORAD › Engine radiator

rearwindowpup 3 Oct 2025, 17:28

Rating 5.0

Overheating:

I've had a Koyorad in my 97 for 5 years now and it's been great.

Pros: great performance, 5 years durability

Vehicle: Toyota 4runner

Denso › Engine radiator

_chanimal_ 23 Aug 2025, 15:58

Rating 4.5

I swapped my original radiator at 230k with a denso replacement. Denso/oem parts have always been g2g for me.

Pros: reliable, good quality

Vehicle: Toyota 4runner

Denso › Engine radiator

Do_Worrk 19 Aug 2025, 14:15

Rating 4.0

Just swapped my OEM at 313k for a Denso, so far so good. Fit very snug, almost thought it wouldn’t fit, so that’s good for surface area at least!

Pros: good fit, good surface area

Vehicle: Toyota 4runner

Koyo › Engine radiator

1testaccount1 19 Aug 2025, 04:34

Rating 4.5

Overheating:
Leaks:

I looked at what I bought like 165k and it was KOYO Radiator A1998 for $175 and I'm like 100k miles later and it still looks good. I just wanna change it for preventative maintenance since I'm gonna have my mechanic add the external cooler

Pros: still looks good, long lasting

Vehicle: Toyota 4runner

Mileage: 160934 km

Part number: A1998

KOYORAD › Engine radiator

dlaguerta 19 Aug 2025, 03:50

Rating 4.5

Overheating:

The Koyorad full aluminum radiator is the one to have. Paired to your Hayden 698 since it doesn’t have a section to cool the trans fluid, however definitely worth it for durability as the next alternative over OEM replacement rad.

Pros: excellent durability

Cons: no integrated trans cooler

Vehicle: Toyota 4runner

Denso › Engine radiator

Waychill83 3 Dec 2025, 12:11

Rating 3.0

I just installed this Denso 7 years ago, won't pay for that again.

Vehicle: Toyota 4runner

KOYORAD › Engine radiator

AZ_BikesHikesandGuns 19 Apr 2022, 23:49

Rating 1.0

Overheating:
Leaks:

When I ordered a koyorad I didn’t get this in the box. I sent back what I got from them it was all dented and didn’t fit.

Cons: dented, didn't fit

Vehicle: Toyota 4runner

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Top manufacturers of engine radiator for Toyota 4runner

This part for Toyota 4runner is made around the world. We have reviews for engine radiator manufacturers from countries such as: Japan .

In March 2026, the ranking of engine radiator for Toyota 4runner on PartReview included 4 manufacturers. It is based on 18 reviews and 55 votes.

Which engine radiator to choose for Toyota 4runner?

Last month, PartReview users preferred Denso. 54% of positive votes went to this manufacturer.

In second place: engine radiator KOYORAD — 16%.

Third place: Koyo with 5% of the votes.

In the overall ranking of engine radiator, which aggregates opinions of owners of different car makes and models, these brands hold the following positions:

Denso ranked 4, PR Score — 82. Based on 39 reviews and 120 votes.
KOYORAD ranked 2, PR Score — 94. Based on 41 review and 125 votes.
Koyo — rank 1, PR Score — 92. Based on 57 reviews and 173 votes.

Other parts for Toyota 4runner

After seeing which engine radiator owners of Toyota 4runner prefer, check other popular parts for this car. In March 2026, leaders on PartReview were:

#1 Spark plug NGK - 50% votes.
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