A coupler is an important component in your microwave, ensuring the turntable rotates smoothly. If your microwave's turntable is not spinning, the coupler (12170000000430) could be worn out or damaged. This genuine Midea piece is designed for use in various models, including the 1.2 cu.ft. over-the-range microwave and the 1.4 cu.ft. stainless steel digital microwave oven. It's a straightforward replacement that can restore your microwave's functionality. Before purchasing, check your device's model number for compatibility.