What parts fit the Whirlpool GH6178XPB2?

Thermal fuse W11707984, Microwave/hood baseless lamp 8204670, Monitor switch W10269458, Primary switch W10211972, Primary switch W10211974.

Whirlpool GH6178XPB2 microwave parts: thermal fuse

Thermal fuse

Replaces 4393308

Reads or limits temperature. A failed one can stop the heat or let it run too hot.

Shop the thermal fuse on Amazon Other models that use W11707984

Microwave/hood baseless lamp

Replaces 8185188

The light bulb this model takes.

Shop the baseless lamp on Amazon Other models that use 8204670

Monitor switch

Replaces 4393598

Door, lid and control switches stop a cycle when they fail.

Shop the monitor switch on Amazon Other models that use W10269458

Primary switch

Replaces 4393697

Door, lid and control switches stop a cycle when they fail.

Shop the primary switch on Amazon Other models that use W10211972

Primary switch

Replaces 4393599

Door, lid and control switches stop a cycle when they fail.

Shop the primary switch on Amazon Other models that use W10211974

1Thermal fuseW11707984

2Baseless lamp8204670

3Monitor switchW10269458

Part numbers come from the Sears PartsDirect parts list for the Whirlpool GH6178XPB2 (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.

Other Whirlpool microwaves

GH6177XPSGH6177XPS2GH6177XPTGH6177XPT0GH6178XPBGH6178XPB1GH6178XPQGH6178XPSGH6178XPTGH6178XPT2