Whirlpool Refrigerator Defrost Heater Assembly W10316428 – Superseded by WPW10316428

Whirlpool defrost heater element used to melt frost from the evaporator during the automatic defrost cycle.

Is This the Right Part?

Common Symptoms

• Frost buildup caused by an open or failed defrost heater.
• Reduced cooling performance when evaporator frost restricts airflow.

Check Before Replacing

• Disconnect appliance power before servicing.
• Check the heater for electrical continuity with the appliance unplugged; an open circuit indicates a failed heater, but a continuity check does not verify the complete defrost system.
• If the heater tests continuous, evaluate the model-specific defrost thermostat/bi-metal and defrost control circuit separately.

Pro Tip

Part Details

Key Features

• Genuine Whirlpool OEM defrost heater assembly.
• Defrost heater element.
• Replaced by Whirlpool part WPW10316428.

Installation Notes

• Disconnect refrigerator power before installation.
• Safely store perishable food while power is disconnected.
• The heater is located at the evaporator behind the freezer interior cover on applicable models.
• Use care around sharp evaporator-area components and reinstall removed covers and grounding connections before restoring power.

Verified Compatible Models

10632242101, 10632243101, 10632249101, 10632942101, 10632943101, 10632949101, 10660212410, 10660213410, 10660214410, 10660219410, 10661102110, 10661102111, 10661103110, 10661103111, 10661104110, A1RXNGFYB00, A1RXNGFYS00, A1RXNGFYW00, A9RXNGFYB00, A9RXNGFYS00, A9RXNGFYW00, ART308FFDB00, ART308FFDB01, GARF19XXYK01, MZF34X20DW03, WRR56X18FW02, WRT108FZDB01, WRT108FZDM01, WRT108FZDT01, WRT108FZDW01, WRT108TFYB00, WRT108TFYW00, WRT138TFYB00, WRT138TFYW00, WRT311FZDM01, WRT311FZDW, WRT318FZDB, WRT318FZDB01, WRT318FZDM, WRT318FZDM00, WRT318FZDM01, WRT318FZDW, WRT318FZDW01, WRT519SZDB01, WRT519SZDD01, WRT519SZDM01, WRT519SZDT01, WRT519SZDW01, WRT541SZHV00, WSZ57L18DH00, WSZ57L18DM00, WSZ57L18DM01, WSZ57L18DM03, WZF34X16DW, WZF34X16DW00, WZF34X16DW01, WZF34X16DW02, WZF34X16DW04, WZF34X16DW06, WZF34X16DW07, WZF34X18DW00, WZF34X18DW01, WZF34X18DW02, WZF34X18DW03, WZF34X18DW04, WZF34X20DW00, WZF34X20DW01, WZF34X20DW02, WZF56R16DW00, WZF56R16DW01, WZF56R16DW04, WZF56R16DW06, WZF56R16DW07, WZF57R16FW00, WZF57R16FW04, WZF79R18DM00, WZF79R20DW00, WZF79R20DW03, WZF79R20DW04, ART318FFDB02, ART318FFDB03, ART318FFDW00, ART318FFDW01, ART318FFDW02, ART318FFDW03, M1TXEGMYW00, MRT118FFFM00, MRT118FFFM01, MRT118FFFM04, MRT311FFFZ00, MZF34X16DW00, MZF34X16DW01, MZF34X16DW04, WRT108FZDB05, WRT138FZDW04, WRT311FZDB00, WRT311FZDB01, WRT311FZDM00, WRT311FZDW00, WRT311FZDW01, WRT318FZDW02, WRT318FZDW05, WRT519SZDM00, WRT519SZDM02, WRT519SZDW06, WRT549SZDB01, WRT549SZDM01, WRT549SZDW01, WZF57R16FW06, WZF57R16FW07

Fitment reminder: Match the complete appliance model number, including suffix or revision where applicable, before ordering.