Import alternative stepper motor in my fritzing sketch
Adding new parts in Fritzing is quite easy - just choose the "Import.." options from the menu in the parts bin. You would be looking for a *.fzbz file to load. And when all else fails, its actually not to hard to create your own part (hardest part is navigating the documentation).

But first you need something to import of course. The stepper motor you linked to looks similar to ones that go by various manufacturer part numbers, like the Adafruit #858. Another common unit is the 28BYJ-48 - just google that and you'll find many suppliers.

Then find the Fritzing parts. Adafruit have stepper motor part in the Adafruit Fritzing library. That may be close to your actual unit, but I think the wiring is different to the 28BYJ-48. 

To get the wiring correct, I actually made my own 28BYJ-48; it's available in the X113647Stepper repo on GitHub (along with a part for the X113647 stepper driver board, which is also quite common but I hadn't found elsewhere).