Truck 2500 hemi quad cab short bed 2wd

Had a radiator leak so changed out the radiator. Truck still gets hot when towing so.. Changed out thermostat 2 times, Fan clutch 2 times, Radiator cap 1 time. We have never overheated truck just pull over and cooled down engine. Have towed 25000 plus miles and never had the truck get hot until we replaced the radiator. Mechanic says there is only one size radiator available for truck. Is he wrong? What else can it be? Thanks

 

I had a similar issue with my Grand Cherokee (4.7 HO) when the radiator developed a split in the side and had to be replaced.
Cost of a Mopar radiator was over $400 so I decided to go with an Autozone, lifetime warranty radiator at $169. Since I swapped it the thing wanted to run at about 220*-225* in normal driving with the A/C on. It NEVER ran over 200* with the original radiator. I did all the tricks - 60% water to 40% coolant on the mix instead of 50/50, put two bottles of Purple Ice in the radiator and installed a 1550 cfm pusher fan which all combined at least got it to stay between 210*-215*.

What I found out later was that the aftermarket radiator (and all aftermarkets I could find for my application) were of single core design instead of the dual core that the Mopar radiators are. This made the difference.

My guess is you have replaced your stock dual core with a single core...

 

I have seen brand new radiators not flow correctly and cause over heating.

 

Dodge also has a big problem with the radiators clogging

 

Thanks I will look into the dual core issue that would make sense. I also will ask for the radiator to be replaced.

 

Dont automatically assume that its your radiator we are just giving you examples of what it could be.