This Whirlpool Defrost Heater For Refrigerator is compatible with Admiral, Amana, Caloric, Crosley, Hardwick, Jenn Air, Kenmore, Kitchen Aid, Magic Chef, Maytag, Modern Maid, Norge, Roper, Sears, Speed Queen, Whirlpool brands. This Part #WP12049801 replaces 12049801, 10428405, 4343920, 401435, AP4009926, PS1571469. This Defrost Heater is 10-3/4" long, with wires that are 18" long. Prevents the evaporator from freezing over. This will fix temperature control issues with freezer and refrigerator sections.