Product review (1 stars): Knob dimensions vary, may not work. UPDATE!
This knob does not fit, even though it has the SAME part number as my old knob. The central stalk that fits over the shaft is slightly different and will not engage to rotate the selector dial.

Packaging says it's a real GE part, so it's a bit of a mystery.

UPDATE
I found a part number on the inside of the knob, and searching Amazon for that part number brought me to this item. However, that part number isn't for the knob, it's just the number for the chrome trim piece on the knob. Apparently, at least 2 knobs use that chrome trim.

Now YOU know not to make that mistake!