Hi all,
images below of a pipe that has a pinhole leak of antifreeze. i outlined it in yellow. red arrow points to pinhole.
it connects to a hose that is coming from the firewall which i guess goes to the heater.
the other end seems to head to some bigger part that i cant quite see to get an idea of what it is. it goes under the cover and the view is blocked.

i am hoping this is a piece that can be replaced easily enough? anybody have a exploded view of the engine bay or know a part number for this?
thanks

 

sorry, 2009 rdx. i thought i mentioned that originally.