I could see that the ignitor for the broiler was working - but the broiler would not light. I figured the oven ignitor was probably OK too. Since the cooktop was working, the main gas valve was OK. The only other item common to broiler and oven was the control valve. I ordered the one noted and it was an exact factory match. Easy to replace once the range was pulled away from the wall. I had to use some thread sealant on one of the gas connections because it was leaking when I tested it - probably a bad gasket. Replaced the control unit and I've got a working oven again! Oh yeah - I also replaced the oven ignitor since I was in the vicinity and it was 20 years old.