That picture is the core of the GE90. The engine was designed to be shipped 'split'. Aan ex-engineer (from EK) who is now cockpit crew, I can confirm that I have personally loaded a fan case on a 777F.
Glofish: The An-124 was probably (I'm guessing here) for the RR T800 to carry the #1 engine for A6-EMM, waaaaay before EK had 777F's.
The last 777 engine change done in Oz was around a year ago, and EK used its own 777F to transport the engine.