How to change the gearbox in beamng?

How to change the gearbox in beamng?

 

In the parts selector using Ctrl+W, or you can change the shifting mode using Q

 

ctrl+w then?
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I can't find the gearbox in the parts selector.

 

The gearbox should be in the engine category.

 

Or you could search up the word “transmission” in the parts selector. That should give you an option for all the different gearboxes compatible with the car.
And like someone said above me, you can also press Q to switch between “Arcade” gearbox mode (where the computer shifts for you) and “Realistic” gearbox mode (where you have to shift gears yourself).
Hope this helps.