Charcoal filter
Filters clog with use. The manual lists how often to change it.
Thermal cut-off
Reads or limits temperature. A failed one can stop the heat or let it run too hot.
Magnetron
A motor that hums but won't turn, or stops once it's warm, needs replacing.
Halogen light bulb
The light bulb this model takes.
Thermal cut-off
Reads or limits temperature. A failed one can stop the heat or let it run too hot.
Turntable motor
A motor that hums but won't turn, or stops once it's warm, needs replacing.
Micro-switch
Replaces WB24X10075
Door, lid and control switches stop a cycle when they fail.
Door interlock switch lever
Door, lid and control switches stop a cycle when they fail.
1Charcoal filterWB02X11544
2Thermal cut-offWB21X10162
3MagnetronWB27X10939
4Light bulbWB36X10213Part numbers come from the Sears PartsDirect parts list for the GE PVM9179EK4ES (view the list), checked November 15, 2026. Amazon buttons open a search for the part number; we may earn a commission.
Where the model number is
Open the door: the label is on the frame. Over-the-range models: sometimes behind the vent grille.