Product review (4 stars): works but overpriced
I bought one of these and the fridge started to work  A month later it died.  I bought another one and suddenly it worked again.  Then a while later it also stopped.  I then used a hard start relay, which kept the fridge going for close to a year before the compressor finally died.

So basically, these work but there is a really good chance if your original died the compressor is on it's last leg and will need a hard start relay to get any real extension of life.  So get this, but keep a close eye on your fridge afterwards.