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Old 08-31-2014, 12:46 PM #61
KimIsAGuy KimIsAGuy is offline
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Quote:
Originally Posted by SKRS1 View Post
Amazon too?
some people on Amazon said that they were receiving TYC radiators with out the hybrid Koyo/TYC stickers/box.
Yea I got it on amazon. Yeah I didn't get that Koyo/TYC stickers/box maybe that's why. I tried to contact the seller, but by that time I said screw it, let's make it fit.
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Old 09-24-2014, 10:39 AM #62
3rdgenT4R 3rdgenT4R is offline
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Universal joint adapter?...I assume this is a knuckle for a socket/ratchet setup?....I am buying a radiator today.
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Old 09-24-2014, 06:05 PM #63
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Full Disclosure - I used to work here:

Call 1-800-Radiator. They'll have Denso and Koyo in stock and depending on where you live, they'll even deliver. Price-wise they can usually beat internet prices. You can also get it same day and if you have problems, they'll swap it out instead of having you ship it back.
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Old 09-25-2014, 12:20 PM #64
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Another data point here for the Denso. I was looking for Koyo several months ago, but the Denso was $105 at JC Whitney and the cheapest Koyo was $150 at FRSport so I went with the Denso. Like Badattitude, my first radiator had a broken overflow nipple which I attribute to bad packaging. After jumping through some hoops with JC Whitney, a second one arrived which I installed with no problems. The quality seems comparable with OEM. The only difference I saw was that the OEM unit had weld nuts while the Denso had nutserts - but still worked. The drain is also a simpler design and not compatible.

Note: when replacing the radiator, get some extra grille clips or use zip ties in place of broken ones. They get brittle and crack with age.

Last edited by flyinbrick; 09-25-2014 at 12:26 PM.
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Old 01-18-2016, 07:40 PM #65
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Ugghhh, cannot decide! TYC, Koyo, Denso, or OEM Denso!??

TYC: http://www.amazon.com/TYC-1998-Alumi...=vglnk-c565-20

Koyo: Koyorad OEM Replacement Radiator Toyota 4Runner 3.4L V6 AT 96-02

Denso: http://www.amazon.com/Denso-221-0508...ct_top?ie=UTF8

OEM Denso: Amazon.com: Genuine Toyota Parts 16410-YZZAJ Radiator for Toyota 4Runner: Automotive
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Old 01-18-2016, 07:57 PM #66
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Get the Denso. Buying the Toyota will get you the same thing in a pricier red Toyota box. It's still a Taiwanese Denso either way. A genuine Japanese made OEM is way pricier. The Koyo isn't even an OEM supplier for the 3rd gen. TYC is bottom end junk.
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Old 03-21-2016, 03:02 AM #67
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Which one did you get ?
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Old 08-07-2016, 02:46 PM #68
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I am really glad I found this 4runner forum. Will be buying Denso radiator as preventative maintenance.
Interesting thing though, I recently replaced radiator in Camry. It was a stock Denso and had a hairline crack across top. Looked online and found this was acommon problem with this radiator. Would be nice if they would stop using plastic when designing these. Is the KOYO all aluminum or like the Denso part plastic?
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Old 08-07-2016, 03:04 PM #69
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Disregard question on whether KOYO uses plastic. Just looked at from link. Another question though. Denso transmission lines look to be aluminium while KOYO looks to be brass or steel. Wouldnt this be better and does anyone know if same material passing through radiator or just connection at opening. Was thinking if not aluminum, might last longer.
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Old 09-15-2016, 10:53 AM #70
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Has anyone investigated the difference between the radiators offered by Toyota? Is the YZZAJ Made in Taiwan/Thailand and the other Made in Japan?

Manufacturer: Toyota
Part Number: 16410-YZZAJ
Part: RADIATOR ASSY
Replaces: 16400-75160, 16400-75180
Part Notes: 3.4 LITER, SERVICE, AUTO TRANS
PARTS: Warranty and Service radiators are included in a special Toyota program.
$199.63 ($289.32 List)

Manufacturer: Toyota
Part Number: 16400-75181
Part: RADIATOR ASSY
Part Notes: 3.4 LITER, WARRANTY, AUTO TRANS
PARTS: Warranty and Service radiators are included in a special Toyota program.
$278.31 ($402.55 List)
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Old 09-29-2016, 05:53 PM #71
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Aftermarket radiator

Can anyone give me a long term report on how their koya or denso aftermarket radiators have held up? Are they as good as the factory radiator?
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Old 09-29-2016, 06:02 PM #72
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just installed a Denso, as well as thermostat and hoses.
fit is simple and exact and yes the drain is not as good as original, but works

but packaging sucks, I ordered a week in advance of doing the work as I had read so many times about broken units on arrival
well I lucked out, even though the radiator was rattling around in the box it had no damage, well a few bent fins

so I would advise people , order will in advance so you can get it , inspect it and get a replacement if needed
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Old 09-29-2016, 06:06 PM #73
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Long story....

I am converting my '99 to solid axle so I wanted a radiator mounted flush with the bottom of the frame rail. My truck came with the largest radiator. I was told erroneously that the middle sized radiator for these trucks would fit and you could raise it about 1.5" to get it flush. I bought the Denso. It appears to be well made, but as others noted, it uses nutzerts, not welded nuts like the factory radiator did. Not a big deal at all....but you'd need longer bolts to run it.

Since the mid-sized Denso didn't fit flush and you couldn't raise it more than 1/4" without the cap hitting the bottom side of the hood, I started searching for the smallest radiator for these trucks....

I did a lot more research and found a company on Rock Auto called OSC. The interesting thing about OSC is that they use larger cores than factory and are reasonably priced (and they used welded nuts). So, IIRC....the smallest radiator uses a 16mm thick core. The one from OSC I got was 22mm.

I wouldn't hesitate to buy another OSC radiator over a factory OEM supplier. Just based on the size and quality specs they go over in their videos....I'd say it's better than the Denso.
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Old 05-28-2017, 02:57 AM #74
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Long term report

I bought this radiator 4 years / 60,000 miles ago https://www.amazon.com/TYC-1998-Alum...05V6QWXDYBVQRS

Its the TYC 1998, now the top of the radiator where the plastic black top cap meets the metal is leaking all around the top, there is pink dried up coolant almost all the way around it. I have washed it and it comes back in 4-5 days, not much is leaking but i am going to be replacing it soon as i have a big road trip coming up.
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Old 09-06-2017, 10:56 PM #75
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Honestly convinced now that Koyo/Denso/TYC etc are all the same bottom barrel china shit. If you want a radiator that will last 20 years then get the Japanese made.
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