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Yes its called the turntable drive coupling.
its $4.30 at the following link. http://www.repairclinic.com/PartDetail/Glass-Tray-Drive-Coupling/DE6700213A/1205901?modelNumber=MMV4203DW00 this just pops up and the new one on, very simple, you can do this yourself with ease, hope this helps, thanks , Bryan