EngineRS-68ADrag to turn · Space takes it apart3,137 kN · 6,597 kg · cold
RS-68A by Rocketdyne: gas generator engine burning LH2 / LOX (retired). Thrust 3,137 kN at sea level, 3,370 kN in vacuum. 102.6 bar chamber pressure, 365 s specific impulse at sea level, 414 s in vacuum, 6,597 kg dry. Figures from the database's engine record. Drawn to the published length and diameter (Wikipedia); other proportions are estimated.