Product review (1 stars): Failed in Three Months
This thermal fuse blew after 3 months.  I replaced all other heating parts at the same time and they are fine..  There is no block in my dryer vent which could cause overheating.  You want this fuse to blow if it overheats (that's it purpose) so make sure your vent is not blocked.  Based on research elsewhere, failure of this part is the most common reason the dryer runs but does heat.

This is not an OEM part and I could not find one on Amazon that is.  Find an OEM part elsewhere..  You'll see them near the top of the list on a google search for the part number.  They will also have instructions on testing and replacing the part.  For this part, and the thermostat, a multi tester will show infinite resistance when it is blown and 0 ohms when it has not.