Product review (3 stars): DOESN'T MATCH
This fits and will work, but it is NOT the same as what's on the Jenn-Air cooktop, so if you buy one, you'd better buy two so that they at least match each other.  The original has five coils and this only has 4.  The coils are a different shape, the center button is different, but if you don't care what it looks like, then you'll be fine.  Be sure not to buy the 6" version, because it doesn't FIT the Jenn-Air cooktop.