when i search for radiators I see with and without aux trans cooler. what does this mean? I believe mine has a small cooler in front of the radiator. are they the same, I just have to put my lines in?

vehicle is a 99 5.9L 4wd

 

If you have a small cooler between the radiator and the A/C condenser then you need the one WITH aux cooler... You have a aux cooler if you have the tow package (factory hitch ect)

 

I don't tow, so can I do away with it? Just use the other one.

The radiators are the same correct? One just has lines going around to the cooler instead of straight down the radiator. Can I take this cooler off and put it on the new radiator that comes with no lines?

 

The lines are part of the cooler, the difference between the 2 is the one for the cooler has the brackets/mounts for the cooler. You can delete the cooler but, i would not recomend it. The cooler you keep your trans even without towing the longer its gonna last.