Product review (1 stars): For the first 15 minutes it heated fantastic...
...then - no more heat, ever!  Cold air.  I returned it and got a GENUINE Whirlpool replacement.  This is NOT a genuine Whirlpool part.  The genuine Whirlpool part will say Whirlpool, MADE IN USA on the wrapper.  This one does not.  See the photo.  The new genuine part works perfect.  You can save a few bucks and get this one from China that has a big quality control problem, or you can get the genuine, MADE IN USA part and have it work for 10-20 years.  My Kenmore dryer is 18 years old, and after replacing this part (the first part ever) it could go another 18 years.

Looking at some other reviews, it seems this seller sometimes sells the genuine part and sometimes does not.  Better to go with another seller that really does sell what they advertise on a consistent basis.