This igniter and orifice assembly is a legitimate OEM replacement part for your gas stove, and includes the igniter, orifice assembly, and gas tube. This part may need replacing if the igniter fails or the tube is leaking gas. It is a very easy repair. Remove the grates and burners from the range. Unscrew the existing assemblies and pry off the cooktop. Locate the assembly you are replacing and undo the nut holding it in place. Pull out the igniter wire by hand, and install the new one, replacing the rest of the parts in reverse order.