EngineRS-25Drag to turn · Space takes it apart1,860 kN · 3,177 kg · cold
RS-25 by Rocketdyne: staged, fuel-rich engine burning LH2 / LOX (active). Thrust 1,860 kN at sea level, 2,279 kN in vacuum. 206 bar chamber pressure, 366 s specific impulse at sea level, 452 s in vacuum, 3,177 kg dry. Figures from the database's engine record. Drawn to the published length and nozzle exit diameter (Wikipedia); other proportions are estimated.