Flamesources dot com conversion kit. Factory instructions are included.

Many bar-b-ques use these types of orifices and they might retrofit a number of other brands.  These are made for that specific Weber model with front control knobs (not side knobs) made after 2010.

This set includes 6 orifices for a grille with up to 4 main burners, 1 side plate burner, and 1 sear station burner. The hose on this regulator is considerably longer than the original equipment hose that came with Weber grilles, stretching some 27 inches from the tank. Other manual adjustments might be necessary, so check your factory instruction manual details. International buyers, please inquire about international shipping rates before ordering. FOB origin.