I have a 2001 1500 5.9 and im putting a new transmission in it and for the warranty I have to put a new trans cooler in and I need help deciding what one to get. I could just get the stock one, but is it best to upgrade? I do a most of my driving 100+ degree heat in the summer and the most I would be towing if ever is like 5000lbs. Thanks for the help.

 

Does your truck have the towing package? (external trans cooler in front of the radiator?)

My take on it was to get the biggest, meanest cooler that would physically fit.

 

Im not by it but I think it has the tow package, it has factory trailer brakes. I'll just get the best one I can find. Thanks

 

Would you happen to know the gvw of the stock cooler?

 

I have the factory towing package on my truck and when I installed the rebuilt/modified 46RE transmission & torque converter, I just flushed the transmission cooling lines, along with the transmission cooler and installed it. As part of the transmission upgrade, I did install a deep transmission pan (an ATS aluminum pan that they say only fits a 48RE, but also fits a 46RE in a Dodge Ram) and I've had no issues with towing to-date.

 

Ok, I have a deep pan for mine too, sounds like I should be in good shape, thanks for the help.

 

Please be sure to properly flush those transmission lines to ensure any metal and debris are flushed from the lines and cooler. This kit does a great job - https://www.autozone.com/motor-oil-a...25oz/36205_0_0

 

Will do