Product review (5 stars): Looked genuine to me
Seller on my unit was listed as Amazon (I know the way Amazon works another seller may rotate in).  There were some people posting that their part was not a OEM Whirlpool part, mine appeared to be the real deal.  At least it had Whirlpool factory certified on the box.  It fit like a glove and works like a champ.  The heat coils actually appear to be a slightly heavier gauge wire than the original that came in my dryer and it also has slightly thicker ceramic standoffs (the part of my original unit that actually failed and allowed it to short against the case).