The Turntable Support is an OEM replacement part for LG microwaves. It fits under the cooking tray and is used to support the tray and to engage the rotating coupler. If your cooking tray will not turn or rumbles when it turns, check the support assembly for signs of wear or damage. If no damage can be seen, check the coupler for damage. Causes of a bad turntable support include normal wear over extended use. Improper cleaning methods could potentially damage delicate support components. Symptoms of a bad turntable support include: Wobbly or unstable turntable rotation Squeaking or grinding noises coming from below the turntable The inability of the turntable to rotate dishes consistently This OEM LG part is also compatible with some Sears/Kenmore models.AJS73149201 (AP6247345) replaces 5889W0A001A, 4873882, PS12115010.