Whirlpool Defrost Thermostat WP4387503Termperature Rating of 8.9 - 16.7 degrees celsius Part Number WP4387503 replaces 2149641, 2149643, 2163894, 2172694, 2182380, 2183072, 2221677, 4343917, 4387503, 61002113, R0950042, WP4387503VP.