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View of the lines leading between the heat exchanger and the forward end of the engine.

Picture 1 of 6.

One line, the LOX supply line, comes from the LOX dome, runs closer to the thrust chamber (behind the turbopump outrigger), and is mostly obscured in this view. This line has a label with a green stripe on the diagonal portion of the line and has a braided section on the vertical portion of the line.

The three other lines run parallel to each other toward the forward end of the engine. From top to bottom, these three are the GOX return line, the helium return line, and the helium supply line.