490 bucks for a cooler is a bit steep. If they were surplus and going for scrap value it would be much better. Fos as much as they are asking for the EGR cooler you can buy a purpose built plate chiller and call it goor without being concerned about soldering materials and food safety issues. Just my .02 FWIW from a noob.
What do you mean "no Kidneys"???, WTF now I gotta drink less beer...
Join the Automation sub forum in Electric brewing for a discussion of components and control systems. I did!!!!