It's the glass panel where the clock and oven dial is. Part number - PS440548
This oven was my mom's and it was moved to my house, unfortunately the movers dropped the stove and that panel shattered. I cleaned up the glass and started using the stove until my new panel comes in. The rangetop works fine but the oven does not light (although the igniter glows) it a crap shoot if the oven comes on. And when it comes on it may get hot then it goes cold. I was thinking that the thermostat was part of the oven dial assembly because I noticed vents up to the area where that dial is located and with the panel being missing that the thermostat was not getting the proper feedback and that was causing the problem with the oven. Then I was reading that the igniter might be bad or going bad. Sorry I didn't give you all this at the first time. That's the whole story!