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Detail of forward portion of the engine.

Toward the right of this picture are the No. 1 fuel and oxidizer high pressure ducts, No. 1 fuel inlet elbow, and gas generator combustor, turbine, and heat exchanger.

In the upper-center and upper-left are the gimbal actuator mounts.

The tubes running down the side of the thrust chamber are the oxidizer overboard drain lines.

The silver tabs on the hatbands mount the studs used to support the engine's thermal insulation.