Where can I get Mehano’s parts for a replacement engine similar to the one in the picture below? or which generic 3rd party vendor produces an engine similar to this?

Where can I get Mehano’s parts for a replacement engine similar to the one in the picture below? or which generic 3rd party vendor produces an engine similar to this?

IHC Texas is now importing and selling some of the TGV sets http://www.ihc-hobby.com/ no idea if they have individual locos or if you have to buy the whole set.
You could always post a message over to Mehano and see what they have to say as well http://www.mehano.si/EN/models.php?models=1
Thanks for your input.
Definitions:
Engine = the entire locomotive, including the motor, the electronics and body shell.
Motor = the devise that drives the wheels.
Are you wanting to replace the motor or the entire engine/locomotive and why?