bypass the factory radiator trans cooler?

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10-17-2010, 07:30 PM

#11

AKlowriderZ71

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I see Chris hasn't read the box either. lol

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10-17-2010, 10:32 PM

#12

budhayes3

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Quote:

Originally Posted by Circle-D

The Tru-Cool has 2 versions. With and without bypass. Just an FYI.

#4739 - With Bypass

#47391 - Without bypass

Chris

Hmmm, good to know...just did a quick search and found this same info on an ebay listing from the vendor that I bought mine from...wish I could remember which one I have, I'll bet that I have the 47391

Thanks for the info Chris

*EDIT*...found an old pic of my cooler on top of the box in my photobucket page, and I can clearly see the numbers "391" on the box...eh, I'll be driving my Blazer mostly in the winter. Guess that I should have paid better attention and done more research before I bought my cooler.

Last edited by budhayes3; 10-17-2010 at 10:42 PM.

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10-17-2010, 10:46 PM

#13

AKlowriderZ71

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4739 and 47391 are the same low pressure drop design. The coolers are exactly the same part. The cold weather bypass is external.

Name: Tru-cool.jpg
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Name: Tru-cool.jpg
Views: 858
Size: 129.5 KB

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10-17-2010, 10:52 PM

#14

budhayes3

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So the 39 comes with an external bypass, and the 391 doesn't? The coolers are the same? Well that makes me feel better, and answers the question I asked you in my PM