In 2007 Weber introduced a new design to their Genesis grills with the control knobs on the right side panel of the grill, which included a battery igniter. Please Note, Weber made a change to their Weber Genesis grills in 2008 which changed the replacement igniter that you need for your grill. The 2007 model Genesis 300 series grills have a metal box around the sparking device (this listing). If your grill was produced in 2008 to 2010 then it will have a white ceramic U around the sparking device and you will need to search for Weber part number 67847 to fit your grill. Weber part 67726 is a genuine Weber replacement part and includes metal spark box, igniter with wires, push button switch, 1 AAA battery, and instructions. Please be sure to check the model and year that you have to be sure that this is the correct igniter for your grill. Weber 67726 fits model part numbers (number located inside cabinet doors below cooking box): 3841001, 3851001, 3841301, 3851301, 3840101, 3850101, 3870001, 3880001, 3741001, 3751001, 3741301, 3742301, 3751301, 3752301, 3756301, 3740101, 3750101, 3750201, 3770001, 3780001.