Product review (5 stars): I'm a happy customer!
My dryer had gradually started taking longer to dry the clothes until one day it dry them at all and didn't get hot.  If you are wondering if its the heating element or some other little part, you will see a break in one of the coils and it only takes a few mins to take the back cover off the dryer to look.  As others have said, save your old coil, you will need to use the overheat sensor off of it.  There's no instructions, but you can easily find step by step and video instructions all over the internet.  All you need is a screwdriver.  I did job myself in less than 10 mins.  I've had this coil in my dryer for a little over a month now, and it is now working great!  I'm glad I went with a "generic" instead of spending $80 at whirlpool.  Best price around by a mile!  Easy transition, fast shipping, product was well packaged and arrived safely 2 days early!  (When you need your dryer, you need it now!)  I'm a happy customer and I would buy from this seller again!  Thank you!