3387134 Cycling Thermostat & 2PCS 3392519 Thermal Fuse & 3977393 Thermal Cut-Off Switch & 3977767 Hi-Limit Thermostat

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.