Product review (5 stars): Dryer running like (what I assume to be) new!
I inherited this Whirlpool Estate dryer when I bought my house.  It was always a bit noisy, but in the past year or so it's started squealing more and more.  I did some research online and found out that they made this model with a idler pad instead of a pulley for the drive belt, and that it was a dismal failure.

Well, I bought this kit, since it was a negligible amount more than the idler by itself.  I figured if I'm going to take the dryer apart, may as well swap all the parts.

Two screws, pop the top open, two more screws, take the front off, pull out the drum and replace parts.  It was about a 10 minute job, tops, requiring nothing more than a screwdriver and a putty knife, and now my dryer runs silently (and probably far more efficiently!)

Quick and easy.