Product review (5 stars): Easy and a Great Price
This GE WB13K21 Flat Style oven ignitor (Norton 501A) is an official GE replacement part and as such was a perfect fit to replace the dead ignitor in my GE Profile gas oven.  This ignitor was an exact replacement and as such had the GE style connector that I needed already attached.  It also has a pair of ceramic wire nuts that you can use to connect it if your oven doesn't use the connector.  After replacing the ignitor, the oven worked perfectly and the burner came on in under 30 seconds.  The best part is that the price of this ignitor on Amazon is about a third of what the GE suggested retail price is...for the exact same part!

This is a very simple repair...you just remove the drawer below the oven (it just slides out) so you can get to the connector, disconnect the plastic connector, use a screwdriver to remove the two screws at the back floor of the oven (the oven floor then just lifts out) so you can expose the burner, then use a screwdriver to remove the two screws that hold the ignitor in place.  Remove the old ignitor and replace it with the new one.  Plug in the connector and then replace the drawer and oven floor.  That's it.  A quick note - When you remove your old ignitor, don't throw away the screws, the new one does not come with screws.