Product review (5 stars): Came Quickly and parts worked well for my Kenmore HE5 Dryer
We had a terrible screaming screeching sound on our Kenmore HE5 dryer to the point where my wife wouldn't use it anymore.  This kit came quickly and we were able to fix it ourselves. It only took me about an hour and a half and now it is very quiet and it's back to doing its job. You do have to take the entire dryer apart and put it back together which is a bit daunting (especially since you can't test it until it is done) but it wasn't too bad.  A Youtube video helped me a lot by "Repair Clinic" search Duet/HE3 Dryer Idler Pulley Wheel Replacement #279640.  Since I already had it opened I just went ahead and changed all of the parts.

The price for new parts seemed like a great deal compared to hiring a repairman.