Weber 42322 Igniter Kit for Summit Silver B - 4 burner models. Weber part # 42322 Igniter kit for Summit Silver B - 4 burner models. The module has 4 outlets for 2 collector boxes. There are 2 extra outlets for a side burner or rear burner. The kit comes with a module, 2 collector boxes w/electrodes with wires, spark generator and battery. 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