This is a replacement compressor for refrigerators manufactured by Whirlpool. The compressor plays a critical role in the refrigerator's ability to properly cool and preserve food. It adds heat and pressure to the system, as well as circulating refrigerant through the system. As the heart of the refrigerator, when the compressor fails, the appliance will no longer cool properly. Refrigerator compressors are subject to a great deal of wear and tear, voltage surges, heat, and other factors. Air, moisture, or dust entering the compressor can also cause damage. Signs the compressor may need to be replaced include frequent cycling, infrequent cycling, and failure to cool.This is a genuine OEM replacement part, and it is sold individually. It is compatible with Whirlpool, Amana, Admiral, Jenn-Air, KitchenAid, Roper, and Kenmore branded refrigerators.W10355489 (AP5331746) replaces 2209945, 4-32812-263, AH3507216, EA3507216, PS3507216, W10120462, W10140972, W10144769, W10240420.