Amana Brand 3387134 Cycling Thermostat & 2PCS 3392519 Thermal Fuse & 3977393 Thermal Cut-Off Switch & 3977767 Hi-Limit Thermostat
Replacement dryer thermostat, thermal fuse, and cut-off switch kit for Whirlpool, Kenmore, and Maytag dryers.
3387134 cycling thermostat replacement part for Whirlpool, Kenmore, and Maytag dryers with 2-inch measurement label.
Diagram showing 3977393 thermal cut-off switch, 3392519 thermal fuse, and 3977767 high-limit thermostat with dimensions.
3387134 dryer cycling thermostat with 4 terminals and mounting bracket for Whirlpool, Kenmore, and Maytag dryers.
Close-up of dryer thermostat and thermal fuse components with heat-resistant plastic and nickel-coated terminals.
Dryer repair kit with thermostats, thermal fuse, and cut-off switch for Whirlpool, Kenmore, and Maytag dryers.
3977767 high-limit thermostat for Whirlpool, Kenmore, and Maytag dryers featured in a lifestyle product graphic.
Replacement dryer thermostat, thermal fuse, and cut-off switch kit for Whirlpool, Kenmore, and Maytag dryers.
3387134 cycling thermostat replacement part for Whirlpool, Kenmore, and Maytag dryers with 2-inch measurement label.
Diagram showing 3977393 thermal cut-off switch, 3392519 thermal fuse, and 3977767 high-limit thermostat with dimensions.
3387134 dryer cycling thermostat with 4 terminals and mounting bracket for Whirlpool, Kenmore, and Maytag dryers.
Close-up of dryer thermostat and thermal fuse components with heat-resistant plastic and nickel-coated terminals.
Dryer repair kit with thermostats, thermal fuse, and cut-off switch for Whirlpool, Kenmore, and Maytag dryers.
3977767 high-limit thermostat for Whirlpool, Kenmore, and Maytag dryers featured in a lifestyle product graphic.
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3387134 Cycling Thermostat & 2PCS 3392519 Thermal Fuse & 3977393 Thermal Cut-Off Switch & 3977767 Hi-Limit Thermostat

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3387134 Cycling Thermostat & Multi-Fuse Safety Kit

Key Features

  • Dual-Pack Cycling Precision: Includes two 3387134 cycling thermostats to ensure accurate drum temperature regulation across multiple heat settings (High, Medium, Low).
  • Comprehensive 5-Piece Safety Overhaul: This all-in-one kit provides a total system refresh, including the cycling thermostats, high-limit thermostat, and two distinct safety thermal fuses.
  • 3392519 Blower Protection: Features the critical one-time thermal fuse located on the blower housing, designed to shut off the dryer if the exhaust airflow becomes dangerously restricted.
  • 3977393 & 3977767 High-Limit Duo: Provides a secondary layer of protection on the heater box, preventing the heating element from overheating due to a stuck relay or blocked vent.
  • OEM-Grade Calibration: All components are factory-calibrated to original specifications, ensuring a 1:1 direct fit and reliable performance in 29-inch wide Whirlpool-built dryers.

Replaces / Cross-Reference Part Numbers

  • Cycling Thermostat: 3387134, 3387135, 3387139, AP3069101, PS344596.
  • Thermal Fuse: 3392519, WP3392519, 3388651, 697354, AP6008325.
  • Thermal Cut-Off: 3977393, WP3977393, 3399693, AP3131941.
  • High-Limit Thermostat: 3977767, 3399693, PS351171, AP3131941.

Compatibility & Fitment

This kit is the universal thermal repair solution for most Whirlpool-manufactured dryers produced over the last 30 years. Key compatible brands include:

  • Whirlpool & Kenmore: Fits most 70, 80, 90, and 110 series models (e.g., 110.66722501).
  • Maytag & Amana: Compatible with many Centennial, Bravos, and traditional top-load matching electric and gas dryers.
  • KitchenAid, Roper, & Estate: A direct fit for dozens of mid-range and heavy-duty cabinet dryers.
  • Note: While the fuses and thermostats fit both, the heating element (sold separately) is required for electric models.

When to Replace

  • No Heat / Cold Drum: The dryer spins normally, but the air remains cold—typically caused by a blown 3392519 thermal fuse or a faulty high-limit thermostat.
  • Dryer Won't Start: On many models, if the 3392519 blower fuse blows, the motor will not engage as a safety precaution to prevent fire.
  • Dryer Shuts Off Mid-Cycle: The thermal cut-off (3977393) has tripped due to excessive internal heat, often caused by a restricted exhaust vent.
  • Inaccurate Drying Times: A faulty 3387134 cycling thermostat can cause the dryer to run for hours or shut off while clothes are still damp.
  • Overheating Cabinet: The exterior of the dryer feels dangerously hot to the touch, indicating a thermostat has stuck in the "closed" position.

Installation Tips

  • Safety First: Unplug the dryer (Electric) or turn off the gas and unplug (Gas) before beginning. 240V electricity can be lethal—never test a "live" circuit.
  • Component Locations: The 3392519 fuse is located on the white blower housing. The 3387134, 3977393, and 3977767 are typically located on the silver heater box or burner funnel.
  • Clean the Vent Line: Before installing the new parts, professionally clean your dryer's exhaust duct. 90% of thermal failures are caused by lint buildup restricting airflow.
  • Vacuum the Chassis: While the back panel is removed, vacuum out all accumulated lint from the bottom of the dryer to prevent a fire hazard for your new parts.
  • Check the Terminals: Look for burnt or discolored wire connectors. If a connector is loose, crimp it slightly with pliers to ensure a tight, low-resistance fit on the new thermostat.
Kit Contents
‎(1) 3387134 Cycling Thermostat + (2) 3392519 Thermal Fuse + (1) 3977767 High-Limit Thermostat + (1) 3977393 Thermal Cut-off Fuse
3387134 - Cycling Thermostat
‎L155-25 | Opens 155°F / Closes 130°F (25°F differential) | Operating thermostat with internal bias heater | 4 terminals (2x 1/4" + 2x 3/16" male) | 120V, 2W bias heater
3392519 - Thermal Fuse (x2)
‎Rated 196°F (91°C) | One-time (non-resettable) | 2x 3/16" spade terminals
3977767 - High-Limit Thermostat
‎L250-80F | Opens 250°F / Closes 170°F | Auto-reset | 3-wire (1/4" male + 3/16" male + 1/4" female) with extended push-on terminal arm
3977393 - Thermal Cut-off Fuse
‎Rated 309°F | One-time (non-resettable) | 2-wire | Old-style: slides onto heating element terminal

FAQ

This kit is compatible with a wide range of dryers manufactured by Whirlpool, Kenmore, Maytag, KitchenAid, Roper, Amana, Jenn-Air, Crosley, Estate, Inglis, and Magic Chef. It is designed to fit many standard-sized electric and gas dryers from these brands that utilize the 3387134, 3392519, 3977393, and 3977767 part specifications.
Common signs include the dryer failing to start, the dryer running but not producing heat, or the dryer overheating and shutting off mid-cycle. If your dryer is taking significantly longer than usual to dry clothes, it often points to a failing cycling thermostat or a restricted airflow causing the thermal components to trip.
Before replacing these components, always inspect your dryer's vent hose and external exhaust duct for lint buildup. A restricted exhaust is the most common root cause for thermal fuses and cut-off switches to blow. If the airflow is blocked, the new parts will likely fail prematurely.
You will typically need a 1/4-inch nut driver to remove the dryer panels, a flat-head screwdriver for prying clips, and a pair of needle-nose pliers to assist with removing the wire terminals. Having a multimeter on hand is also recommended to verify continuity on the old parts before installation.
When replacing the 3387134 cycling thermostat, inspect the wire connectors for any signs of heat damage or corrosion. If the terminals appear loose or burned, they should be cleaned or replaced to ensure a solid electrical connection. There is no specific orientation required for mounting, but ensure the unit is seated securely in its slot and the mounting screw is tightened.
The cycling thermostat (3387134) regulates the internal temperature during the drying cycle. The thermal fuse (3392519) acts as a safety device that cuts power if the dryer overheats. The thermal cut-off switch (3977393) and the high-limit thermostat (3977767) work together to prevent the heating element from reaching dangerous temperatures.