This General Electric Defrost Heater With Harness For Refrigerator is compatible with General Electric, Hotpoint, Kenmore, RCA brands. Part #WR51X10029 replaces 880031, AP2071521, PS303760. This defrost heater assembly kit includes: heater, harness, and defrost thermostat. The heater melts the ice forming in the evaporator fins during the defrost cycle.