Product review (5 stars): Genuine Whirlpool Thermal Fuse 3392519
Received Genuine Whirlpool Factory Certified 3392519 Thermal Fuse. Since thermal fuses fail due to excessive heat load (versus an electrical fuse which senses excessive current), rather than simply replace the fuse, be sure to investigate and fix the cause of the failure. This specific thermal fuse typically gets too hot due to restricted air flow.  Restricted air flow is either a blockage in the ducting, or debris accumulation in the actual exhaust fan (or both).  Consequently, please don't just replace your thermal fuse without a complete system cleaning. Aside from constant fuse failures, these can be major life and property saving safety devices.

My particular dryer exhaust system is under the slab, and runs about 20 feet. Using my handy-dandy duct cleaning system and shop-vac, I proceeded to clean the in-home exhaust ventilation system. Between myself, the wife and three daughters, there is a significant amount of washing and drying taking place. Most folks do not realize the sheer volume of moisture being pumped during the drying process. Naturally, this moisture condenses along the interior surface of the exhaust ducting; then, that same wet surface area slowly but surely accumulates dryer lint, along with general dust and debris being pulled through what is basically an expensive air pump (your dryer exhaust fan). Over time, this constant coating process effectively reduces the inside diameter of the system, reducing air flow and placing a greater load on the dryer fan. In addition, extended dryer run time means higher energy bills.

20 minutes of clean time resulted in approximately a cubic foot of debris from the exhaust system alone.  Next proceed to the dryer cleaning process (after all, you already have the back cover off). This baby was full of dust, hair, spiders (I hate spiders...), etc.  Another 6 screws and the fan cover is removed (Whirlpool LER8648LW0). There I discovered toothpicks, hair pins, safety pins, small pebbles, sand, pieces of pens and pencils, along with a variety of other items that left me scratching my head. Anyway, the fuse failure forced the issue, and a couple of well spent hours resulted in a completely cleaned dryer, and exhaust duct system.

Installed my genuine Whirlpool thermal fuse, and the dryer is back up and running even more efficiently than before.

I hope this helps.