PETKAO Weber Spirit II GS4 Grill Parts Kit: Flavorizer Bars, Burner Tube, Heat Deflector

Upgrade your Weber Spirit II GS4 grill with the PETKAO replacement parts kit. Designed for Spirit II E310/E320 and S310/S320 models, this kit aligns with Weber original part numbers and provides a reliable pathway back to steady temperatures and the familiar grilling performance you expect from your grill.

This comprehensive assembly covers the core cooking system: five-pack 16-gauge 304 stainless steel flavorizer bars, left and right main burner tubes, a dedicated crossover burner tube, and a stainless heat deflector, plus clear installation instructions. The flavorizer bars rest across the flame, guiding heat and evenly distributing it across the cooking surface. The 4 notches per bar help anchor each piece securely, supporting even heat and better air flow for consistent sear lines.

The included burners and tubes are sized to promote a balanced burn. Left and right main burner tubes measure ~18 inches, the center burner ~17.75 inches, and the crossover tube ~15.25 inches, while the heat deflector measures about 7¾ by 4¼ inches and rises 2-1/8 inches at the back. With proper installation, the system works together to deliver steady flame, quick heat-up, and steady heat retention.

The heat deflector serves a dual role: it reflects heat back toward the cooking surface and catches drippings, helping to minimize mess and contributing to a cleaner cook. This, in turn, can support more predictable cooking conditions without promising a guaranteed outcome.

What makes this kit a practical choice

• Compatibility with Spirit II GS4 models; matches Weber part numbers for a straightforward fit.
• Premium 304 stainless steel flavorizer bars with four notches per bar for even heating and easy flame observation.
• Durable burners and heat deflector designed to renew your grill’s efficiency and flare control.

What you get

• 3 x main burners
• 1 x crossover burner
• 1 x stainless heat deflector
• 1 x installation guide
• 5 x 16GA 304 stainless flavorizer bars

In real-world use, the kit aims to restore the ease of grilling you remember: quick heat-up, stable temperatures, and the potential for consistent sear marks. The included OEM-style installation guide and hardware simplify setup, helping you get back to cooking with confidence. The flavorizer bars measure 15.3 x 2.6 x 2.5 inches each, while the heat deflector’s dimensions provide a secure fit within the GS4 Spirit II frame. Whether you’re searing, grilling vegetables, or melting cheese on crusty bread, this kit is built to support reliable operation and a smoother maintenance experience.

Note: results may vary with use, and this kit is offered as a practical upgrade to support your grill’s performance.