Derale 13614 Series 9000 Plate and Fin Transmission Oil Cooler - High Performance Black Cooler for Trucks, RVs & Off-Road Vehicles | Heavy-Duty Cooling Solution for Automatic Transmissions

This is a really well built heat exchanger that I used as an aftercooler for my compressor. I wouldn't hesitate to use this in other scenarios as well, be it as a transmission cooler (as intended) or anywhere else heat exchange is needed between two mediums. It worked well and feels very well built. Kind of hard to see it in the pic - follow the copper pipe to the black obelisk in the background. There's a fan mounted back there too blowing air through it that you can't see.I was able to cool the air from the pump by over 200F on its way to the tank, removing moisture and making my air tools very happy. I looked at other options that were 20-ish dollars cheaper, but those were generally tube/fin and had AN fittings, which would have meant a more cloogey plumbing job to get from AN to NPT. Plate&Fin generally does a more effective job exchanging heat too and this did not disappoint. It came with some hose, barb fittings, and ties for connecting a fan... I didn't use any of that as my mounting/plumbing situation was unique, but the accessories all appeared to be of high quality. Thumbs way up on this!