High Quality Aftermarket Replacement Part Manufactured 

3977767 3392519  Hi Limit Thermostat Replaces Whirlpool Kenmore Roper Dryer 

3977767:
High-limit thermostat, L250-80, with terminal extension arm
Three terminals are: 1 - 1/4" female, 1 - 3/16" male, 1 - 1/4" male. Fits many (but not all) Kenmore & Whirlpool dryers.

3392519 (WP3392519):
Thermal fuse. If the dryer overheats, this device stops the flow of electricity to the heat source and/or the entire dryer. It is located on the blower housing and cannot be reset. The most common cause for overheating is a vent tube clogged with lint, a birds nest or other debris.