Oven bake burner igniter. If the oven does not heat check if the igniter is glowing. If so, it is likely weak and should be replaced. A defective igniter is the most common cause for a gas oven to not heat.
Oven sensor *Connector could be different than original. If so cut & splice wires together with porcelain wire nuts.
Ignitor, broil burner
Electronic oven control