Hot tub leaking

[SideShow Bob]

"Does anyone know what this is called so I can find a replacement?"

Look up the manufacturer and model on the Internet and then look for a parts diagram to identify the parts. There are several hot tub dealers in the metro area.

Or you could just JB Weld the split and give it a try.....

And be sure to run plenty of disinfectant through the hot tub before jumping into a used one.....
no telling what has been festering in the tub and lines.......