EngineJ-2Drag to turn · Space takes it apart486 kN · 1,788 kg · cold
J-2 by Rocketdyne: gas generator engine burning LH2 / LOX (retired). Thrust 486.2 kN at sea level, 1,033 kN in vacuum. 53 bar chamber pressure, 200 s specific impulse at sea level, 421 s in vacuum, 1,788 kg dry. Figures from the database's engine record. Drawn to the published length and diameter (Wikipedia); other proportions are estimated.