Used Mercedes Parts Used Mercedes Part Question.. 1991 350 SD AC/Manifold Hose?????

Used Mercedes Part question.. 1991 350 SD AC/Manifold Hose????? - used mercedes parts

I need a system of diverse .. 1991 350 SD CA
I do not want a new, because they are $ 600.00, I want one that is also used.
Can you help me?