Weber Q Electronic Igniter Assembly #80453 Electronic spark generator for Weber Q120, Q220 and Q320 models Includes a 2 Lead Electronic Module, Battery and Weber # 2181803 push button. Please visit Weber's website to ensure you order the correct parts for your specific grill. It is best to look up by serial #. The following link will also help you find the alpha numeric number. http://help.weber.com/schematics/#serial-number