Weber 63028 Temperature gauge for some Smokey Mountain Cookers Temperature gauge for some Smokey Mountain Cookers Fits 721001 (2009) 18.5" Smokey Mountain Cooker and 711001 (2014) 14 Smokey Mountain Cooker 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