"......4 row aluminum tube radiators DO NOT exist......"

Gee I'm getting older but I still can count, and yes 4 row aluminum radiators do really exist.....I've used 2 of them so far.

My understanding of aluminum radiators is that aluminum is actually LESS efficient than brass/copper in transferring heat, but as it is more rigid, it allows for a more efficient DESIGN .....wider tubes which equates to more cooling surface area.

The tubes on the 4 row aluminum radiators I used are only 3/8" which gives a total surface area of only 1 1/2" as compared to 2" of surface area for a 2 row with 1" tubes. So why did I use the 4 rows......because that’s what the customer wanted. In defense of the radiators, both cooled the engines with no problem and have been trouble free.

A word of caution when looking at aluminum radiators. Look at the tube width. Do not automatically assume that a 2 row radiator is two one inch tubes. If you see a radiator listed as having 2 rows and a total width of 2” chances are you will be getting a radiator with two 3/4" tubes (or I have even received on with one 1” and one 3/4” tubes), as there needs to be a gap between the tube rows.