It is part #6 in this picture:



It is the power steering line that attaches at the power steering pump and wraps around the front of the engine to the left. It eventually goes somewhere in the back of the engine... I need to replace this line. I have a leak in the section above the exhaust manifold.

Shoot me an email if you have this part sitting around or if you're parting out a 3rd gen Prelude Si.