Product review (5 stars): Just what I needed for a tune-up on Whirlpool dryer
My 10 year old Whirlpool dryer would squeak for about 5 minutes after startup. I had gotten used to the sound but I had tenants moving in and didn't want them to complain about it so I purchased this kit to replace most every wear-part at once. Thanks to instructions I found on youtube the disassembly was not difficult at all for those not completely afraid to take things apart. I was pleasantly surprised to discover that the idler assembly was of a newer design from the one  that came with my unit- the original applied friction to the belt where this idler is an actual roller. All parts were included including the little plastic locking clips that hold the rollers in place. It all went back together correctly (I got a little hung up on the belt routing through the idler roller and drive motor pulley but the Youtube video cleared that up. Once complete the dryer ran without any noise. This $20-ish part saved me at least $80 for a service call plus service parts markups.