Product review (3 stars): Worse, this kit includes a tension pulley part that ...
Beware this kit does NOT contain all of the parts needed to service the drive belt components of a modern Whirlpool dryer, or even the correct parts. A search on my dryer model number, WGD6400SW1, revealed this kit. Unfortunately my dryer was built with four rollers, two front and two rear. This kit includes only two. Worse, this kit includes a tension pulley part that does not fit my dryer at all. Newer models (mine is already five years old) use a tension pulley that pivots on a shouldered screw, contacting a cutout switch that shuts off the dryer motor and heating assembly if belt tension is lost. This kit's tensioner has none of these features. I've used the parts I could from this kit, and ordered a set of two additional rollers and the correct tension pulley assembly available elsewhere on Amazon, to completed the job.