Product review (5 stars): PSA: You may not need to buy a T15 Torx Screwdriver
The kit that was delivered to me included an adapter screw (Phillips to T15 Torx), so youll probably be okay if you don't own any of those specialty torx screwdrivers. See the picture. You may want to check with the seller to be sure.

One other quick PSA: This kit includes both the left and right assemblies. There is no need to order two of these kits.

I don't expect to have to replace this adjuster assembly ever again. For me, root cause of the problem seemed to be the breaking of the plastic axels (the part that slides into the center of the wheels). The axles in the replacement assembly are metal, so I don't see this being an issue.

No instructions were included with the kit I received, but a quick YouTube search of the part number gave me all the help I needed.

If it matters, the packaging of this kit indicate that these parts are manufactured by Whirlpool.

It took me about 30 minutes to repair.

Good luck. Have fun. :-)