4.7L Tundra - transmission cooler bypass?

[Qyota]

Howdy folks.

I have a 2006 DC Tundra with the 4.7L engine. The radiator needs to be replaced (it's leaking/weeping coolant from the aluminum/plastic seam), and I noticed that this model also uses the radiator to help moderate the transmission fluid temp, via an internal cooler in the bottom of the radiator. On my '99 4Runner (3.4L), it suffered the "pink milkshake" due to a rupture in that integrated cooler. That cost me a new donor transmission and a headache. I'd rather not experience that again with the Tundra...so has anyone here bypassed the radiator when replacing it? And by bypass, I mean keeping the transmission cooling loop separate from the engine cooling system. If so, how did you go about that?

Thanks!

 

[toyotech]

You can take the radiator out of the loop and keep the factory trams cooler. Not sure if this will be enough cooling.

I plan on taking the radiator out of the loop and keep the factory trans cooler but add a secondary aftermarket trans cooler to help. Than watch my before and after trans temp and see if it works for my needs.


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[chmura]

I would not bypass the internal transmission cooler. It helps warm up the transmission faster in frigid temps, its there for a reason.

When replacing radiators do not go cheap, buy only Koyo or Denso radiators. And if you are afraid of the 'milkshake' scenario replace the radiator every 10-12 years even if its not leaking. Radiators are cheap these days, 150 or so.

 

[AaronK]

I got an OEM Denso on Amazon for $104

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[LandCruiserPhil]

I would not bypass the internal transmission cooler. It helps warm up the transmission faster in frigid temps, its there for a reason.
.

▲THIS▲ Your trans will not go into OD until it reaches operating temp. It could take a long time before you see OD.

 

[toyotech]

I got an OEM Denso on Amazon for $104

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https://www.amazon.com/Denso-221-0518-Radiator/dp/B0049GLHB2

This one ?


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[AaronK]

https://www.amazon.com/Denso-221-0518-Radiator/dp/B0049GLHB2

This one ?


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I got this one:
Denso 221-0517 Radiator https://www.amazon.com/dp/B0049GHV3U/ref=cm_sw_r_cp_apa_HGj1ybCSSYSXD

Wonder what the difference between the 0517 and 0518 is

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[toyotech]

I got this one:
Denso 221-0517 Radiator https://www.amazon.com/dp/B0049GHV3U/ref=cm_sw_r_cp_apa_HGj1ybCSSYSXD

Wonder what the difference between the 0517 and 0518 is

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Looks like early year tundra used 0517 which I'm assuming yours is pre 2002. My 2004 shows up as a 0518. Either way both numbers say it doesn't fit my tundra per amazon. But denso website shows part numbers depending on year.


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[AaronK]

Mine is a 2002 yeah

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