Refrigerator Defrost Heater for General Electric, AP4355467 PS1993872 WR51X10101 by TacParts Brand new refrigerator defrost heater replaces General Electric, Hotpoint, RCA, WR51X10101. UPDATED SUB, WITH TWO HEATERS. Replaces part numbers:AP4355467, WR51X10053, 1399613, AH1993872, EA1993872, PS1993872, WR51X10032, WR51X10097