What it this part?
 

Hi guys,

I have a rubber hose that is leaking coolant behind and below the rad, it is connected to some hard lines and leads to this black thing in front of the rad.


https://cimg2.ibsrv.net/gimg/www.rx7...a4be05cd21.png

Also, does anyone what would be the size of that rubber hose?

Pretty sure thats the power steering cooler lines

Thank you for replying, after verifying with my local Mazda dealership, it is the power steering coolant lines in deed.

Does anybody know what's the size of the rubber hose? My bet is 3/8 but I'm away from home I can't confirm what size it is.