Product review (5 stars): Probably fits many different microwaves
The tray on our Maytag/Whirlpool microwave stopped turning, model # MMV4203WB-0, now a discontinued model of course, manufactured in 2010. I searched around and compared part numbers. Plenty of repair sites wanted $65 for the motor, but I refused to believe I'd have to pay that when I saw how many similar units were available for a LOT less, like this one!

I rolled the dice and took the chance and for around $20, this seems to be an exact replacement, It had many of the same numbers on the back as the old one, and the fit and finish were perfect. It was a pretty easy job to remove a dozen small phillips screws, swing the bottom of the unit down, unscrew the two #15 torx screws on the motor and put this new guy in. Only took a little more than a half hour, no muss, fuss, or blood. It works perfectly. This would probably fit many, many similar units. I'm happy with it.