JGB920BEC4BB
That one works 
what I ordered was: GE WB16K10035
Using your corrected model#, I got Oven Igniter WB13K21 is linked here.
The link also has a video that may help.
The biggest problem we would run into is the 2 screws holding the igniter to the burner were facing down and this left little room to access them. That is where that 1/4 drive rachet wrench helped.
Does the heat shield need to be removed to remove the bake burner?
Oven floor and deflector would have to be removed. The deflector should come out when the oven floor is remove.
Please see next post for a link to that video.
jeff sr.