Product review (5 stars): Worked well for my Frigidair Dryer fse447ghs0
There are several good videos out there on how to do this replacement - I recommend watching at least two of them, as there are helpful pointers in several.  But, with that little bit of research, I felt quite confident in being able to do this repair and had no significant problems.

Experience level:  mid-40s woman with good comfort level with wrenches, screwdrivers, and strong but short (5'3").  I was able to get the drum loose, but it took several good tugs and a bit of salty language.  I had full, free access to the back of my dryer.

Pointers from videos:  Since the bearing part hasn't been threaded, if you screw in a spare screw before you try to attach it to the back of the drum, it'll make it much easier to mount when you're trying to attach it to the drum.

For attaching the belt, one expert did it from the front by feel.  I preferred the video where you removed the back vent cover and had direct, visual access to the belt & pulley system.  The replacement pulley worked fine.

My pointer - read the tube labels carefully.  Make sure you don't mix up the high temp adhesive and the high temp lubricant.  (I didn't, but I could see someone doing this pretty easily!)

Enjoy your bragging rights after you finish!