Product review (5 stars): It does make a difference...
Our oven wasn't preheating to our satisfaction and seemed off temperature during bake cycles.  Our broiler worked ok but was slow to come on.  Decided to change out both of our oven ignitors even though we could see a decent orange glow with the originals.  This was the ticket and what a surprise to see the oven preheat as quickly as when new.  My wife says the bake temps and times are much more accurate now so she is happy and I'm happy as well.
Installation was easy although I did resort to using a 1/4" nut driver along with a Phillips screw driver.  The new cover plate fit with no modification required and the ignitor, wires, and connector were exact replacement parts as well on our Maytag oven.  Shipping was super quick too!