Item #252051 | GE OEM Part #WB21K5009
This is a Genuine Replacement Part, The Model Number and Name for The Following Item: General Electric (GENF0) WB21K5009 Oven Safety Valve.
These valves do not fail very often. Normally the problem is with the ignitor not drawing enough amperage to open the valve. Even if the ignitor is glowing orange it is likely still the cause of the burner not igniting. Technicians refer to this as a "weak" igniter.