Could be
Just kidding, I've no clue other than it could be a boat railing part.
I'm thinking I'll hold off on the fans until I do the radiator. I have the factory E36 radiator now. Works fine just really old and I'm not fond of plastic end caps.
It will be either a Mishimoto or CSF radiator.
https://www.amazon.com/CSF-3054-High...DCTPHYY8J4RX5B
https://www.amazon.com/dp/B003GZFEAW..._t1_B001FJ9VEQ