WP3977767
Dryer High-Limit Thermostat

Know what you're ordering.

• This reference is not universal. Copy the full appliance model, including its final revision digit.
• Order only the component identified in the model diagram; shared symptoms do not mean all listed parts need replacing.

Package contents

One heater high-limit thermostat with terminal extension arm. This is not the blower thermal fuse or a complete cut-off kit.

Part reference

WP3977767

Part type

Dryer High-Limit Thermostat

Brands in fit records

Whirlpool; check the full model

Documented model matches

“Confirmed” means listed by multiple source publishers, not physically tested by us. Match every character of your model.

Before you replace it

These symptoms appear in the source records. They do not diagnose the fault by themselves.

• Dryer does not heat
• High-limit safety control needs diagnosis

• Have a qualified technician check the high-limit thermostat and the heater circuit with power disconnected. Never bypass a safety control.
• Investigate vent restrictions and overheating before replacing a failed control. Match the terminals and complete model diagram, not just the shape.

Compare the actual package.

Compare the exact reference, quantity and model evidence before comparing cost. Retailer prices are dated observations; shipping and tax are extra unless the seller says otherwise.

Choose a listing only after resolving model fit and package differences. A lower price, familiar brand or similar photograph is not additional compatibility evidence. We have not physically tested these offers or ranked their quality.

Plan the replacement.

This is an overview for planning the work. Use your complete model’s service instructions for access, fasteners and final checks. The linked catalogs identify the part and may provide repair material for specific models; they are not instructions for every appliance.

We have not reviewed a replacement procedure for this record. Ask the retailer for instructions covering your complete model before disassembly.

Availability & number history

Last status check: 2026-10-22. AppliancePartsPros lists this reference in stock on the WED4815EW1 model catalog checked 2026-10-22. This is a retailer observation, not a manufacturer stock guarantee; verify the current listing.

Availability can change. Check the current retailer listing; a missing listing alone does not prove that a part is discontinued.

A few useful answers.

Other parts to identify separately

Related references are not interchangeable. Check each part against your model.

• 341241 — separate component in the reviewed dryer diagrams. Check and diagnose separately; not an interchangeable replacement.
• WP3392519 — separate component in the reviewed dryer diagrams. Check and diagnose separately; not an interchangeable replacement.
• 279838 — separate component in the reviewed dryer diagrams. Check and diagnose separately; not an interchangeable replacement.
• WP691366 — separate component in the reviewed dryer diagrams. Check and diagnose separately; not an interchangeable replacement.

Keep checking

• Whirlpool WED4800XQ0 Dryer Parts & Model Diagrams and symptom checks →
• Whirlpool WED4800XQ1 Dryer Parts & Model Diagrams and symptom checks →
• Whirlpool WED4800XQ3 Dryer Parts & Model Diagrams and symptom checks →
• Whirlpool WED4800XQ4 Dryer Parts & Model Diagrams and symptom checks →
• Whirlpool WED4815EW0 Dryer Parts & Model Diagrams and symptom checks →
• Whirlpool WED4815EW1 Dryer Parts & Model Diagrams and symptom checks →
• Whirlpool WED4900XW0 Dryer Parts & Model Diagrams and symptom checks →
• Whirlpool WED4900XW1 Dryer Parts & Model Diagrams and symptom checks →
• Whirlpool WED49STBW0 Dryer Parts & Model Diagrams and symptom checks →
• Whirlpool WED49STBW1 Dryer Parts & Model Diagrams and symptom checks →
• All identification and troubleshooting guides →