Dryer Thermal Cut-Off Fuse Kit 3977393

Brand: Whirlpool · Appliance: Dryer · Fits: 1,130 models · Reference price: $41.43

3977393 is a Whirlpool replacement part (dryer thermal cut-off fuse kit) for dryers. Our fitment data lists 1,130 models that use it.

When to replace this part

Heat control (thermostats, fuses, heating element)

Symptom: The dryer runs but produces no heat, or it shuts off partway through the cycle.

Check: With the dryer unplugged, check continuity across the part with a multimeter -- no continuity means it has failed. Clear the lint vent first, since a blocked vent is what usually trips a thermal fuse in the first place.

Models that use this part

Part numbers it replaces

The manufacturer lists 3977393 as the replacement for these earlier part numbers. Substitute parts can look different from the original but serve the same function.

• 279816 — Thermal Cut-Off Kit

Other parts for model LER5644JQ3

If you are repairing that appliance, these are the most model-specific parts on file for the same model.

• Control Panel 3977819
• Control Panel 3977820
• Dryer Guide LIT8522245
• Installation Instructions Literature Parts LIT8535829
• Panel 3403576
• Wire Harness 8299871
• Cabinet 8530606
• Owner's Manual LIT8522243

Reference price and where to compare

The reference price on file for this part is $41.43. It is informational only, not an offer or an Amazon price — RepairKitHub does not sell parts directly.

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Before you order

• Match the part number character for character, including dashes and trailing letters; a single different character is usually a different part.
• Confirm your appliance's model number on its data plate and check that it appears in the list above (or use the model lookup tool).
• If a seller offers a substitute number, check that it appears in this page's replacement list or in the manufacturer's documentation.

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