EngineRL10A-4-2Drag to turn · Space takes it apart99 kN vac · 170 kg · cold
RL10A-4-2 by Aerojet Rocketdyne: expander, closed engine burning LH2 / LOX (retired). Thrust 99.2 kN in vacuum. 43 bar chamber pressure, 451 s in vacuum, 170 kg dry. Figures from the database's engine record. Drawn to the published length and nozzle diameter (Wikipedia); other proportions are estimated.