Product review (4 stars): does the trick
The insulation on my lower heating element failed resulting in welding like sparks while cooking pizza.  Looked online and determined that this heating element fit my oven (magic chef) and ordered it.  Takes a bit of patience to wait a week during delivery without using your oven, but i was satisfied with the price.  If you are uneasy about your skills, don't worry, anyone with a phillips screwdriver and 5 minutes can install this part.  Hope this helps.