✅OEM Part Number: Replaces Weber 66033, 66797 flavorizer bars. They boast an ideal thickness, ensuring that the grill reaches the optimal temperature for cooking. ✅Compatibility: These flavorizer bars fit Weber GS4 Genesis II 400 series and II LX 400 series grills (2017 and newer), including E-410, S-410, E-415, S-415, E-435, S-435, 455, SE-410, SP/EP-435, LX E-440, and LX S-440.