My PS started leaking a few weeks ago. I beleive the sourse is the "top hose swadge" fitting, just about the gear box. Does anyone know if that is the high pressure line?

Auto zone only lists one hose for our trucks:

http://www.autozone.com/autozone/par...94792_0_11589_

(Advace Autopart lists the same number)

Is this the line that I need?