The cold water reservoir is an OEM replacement part for GE refrigerators. It serves a dual purpose, holding the supply of cold water needed for both the ice maker and water dispensing functions. This ensures that each ice cube is formed from chilled water and that cold water is always ready to be dispensed. Causes of a bad reservoir can include cracks, fractures, or leaks developing in the plastic over time due to repeated filling and draining. Mineral deposits or contamination of the water supply can also compromise performance. Symptoms of an issue include: Inability to fill with water or retain water levels Leaking water inside the refrigerator Irregular or inconsistent ice production This GE replacement part is also compatible with Hotpoint, RCA, and some Kenmore refrigerators.WR17X11324 (AP3186680) replaces 962383, AH758881, EA758881, PS758881, WR17X11141, WR17X11331.