YSM 12 Low pressure return line
If you have the two fittings, find some soft fuel line of a similar diameter and get someone to weld or solder up another line for you. I understand that particular part is no longer carried in the supply chain. Mine is currently held together near the middle by a short piece of rubber hose and two teeny-weeny clamps. One of the fittings was re-attached to the metal line by in a shop. I don't know if it was welded or soldered.