Product review (4 stars): It's a replacement fan alright.
I replaced the fan but what? the fan slides ever so slightly off the end of the shaft?  You really need to crank the screw down tightly without breaking the plastic to secure it to the dryer motor.  That's a really cheap, not great method to attach a fan I have to say.  After hearing the rubbing going on I discovered the fan had slid to the end of the shaft and was eating the teeth away on the sheet metal.  Nice.  After putting it back on, the fan and motor are purring quieter than ever.

By the way, the original fan had warped beyond reasonable planarity which is why I replaced it.  The only reason I can think this might happen would be due to excessive heat on the fan.  Terrible design really.