Hi, having trouble ordering or finding this hose. It connects to the bottom of the radiator, I thought it was a radiator hose, but people say it's the A/T Cooler Hose. I think the size is 5/16.
It's been leaking due to my mechanic a couple months back just threw any random hose..

 

Its for the transmission cooler

 

Yea, it's the trans cooler hose, but website is asking if this is left or right?