Transmission cooler lines
I also wonder if the metal end is flared. Usually if someone is installing an aftermarket tranny cooler the kit will have some sort of flared line to splice into the existing hose.
If you look at this: https://www.google.com/search?q=flar...jGnHY6r2b7M%3A
you'll see that you could theoretically cut that whole junction thing out and just splice that thing in...


