67046 7636 Flavorizer Bars 15.3” Replacement for Weber Spirit II E-310 310 300 Grill Parts, Spirit E/S-310 320 330 Parts, 16 GA Stainless Steel Flavor Bars, Weber Spirit GS4 Flame Guards 5 Pack

i can't tell, but usually the first item that needs maintenance/replacement are what they call the flavorizer bars. They tend to rust through. Find generic stainless steel ones if you can on amazon. https://a.co/d/0g4QyMSa