Uniflasy GS4 Genesis 2 Grill Parts for Weber 3-Burner GS4 Genesis II Replacement | Flavorizer Bars & Heat Deflectors

Upgrade your Weber Genesis GS4 grilling setup

The Uniflasy GS4 Genesis 2 grill parts kit is crafted to refresh heat performance on Weber Genesis II 300 Series grills (2017 and newer) as well as Genesis II LX 300 Series models. This assembled replacement solution helps you restore stable heat distribution while shielding burners from direct flame, making long cookouts more manageable and enjoyable.

Designed with longevity in mind, this set brings together two essential components you’ll reach for again and again: durable flavorizer bars and reliable heat deflectors. Built to OEM-like dimensions, the kit aims for a straightforward swap that fits your existing setup without guesswork.

What’s included and how it’s sized

• Flavorizer Bars (5 pieces): each measures 17 1/8" long, 3" wide, and 2 1/8" high, tuned to promote even heat across the cooking surface.
• Heat Deflectors (3 pieces): each measures 12 1/2" long and 4 1/4" wide, designed to help manage heat flow and protect burners during high-heat sessions.
• Complete packaging for a ready-to-install replacement kit, with attention to matching the original sizing for a smoother swap.

Key benefits that you might notice

• Even heat distribution: thicker 16GA steel creates a solid, stable platform that helps minimize hot spots and promotes consistent cooking results.
• Enhanced flavor through dripping vapor: properly positioned flavorizer bars vaporize drippings, contributing to a richer smoky profile during grilling.
• Durable build for high-heat use: the 16GA steel construction is designed to withstand frequent grilling and long sessions.

Finish and design

The kit features porcelain-enamel finishes in snowflake and black, chosen for corrosion resistance, high-heat wear, and ease of cleaning. The unique snowflake enamel demonstrates improved heat resistance and reduced flaking over time, while the sleek black variant supports steady heat performance and a clean look.

Real-world use and compatibility notes

This replacement set is ideal for Weber Genesis II 300 Series (2017 and newer) and Genesis II LX 300 Series (GS4 parts). Before ordering, please verify your grill model year and confirm dimensions against your existing parts to ensure a proper fit.

In everyday grilling, you may appreciate the combination of sturdy fabrication, reliable heat management, and easier cleanup after cooks that feature flavorful drippings. While results can vary by grill and technique, upgrading to reinforced flavorizer bars and heat deflectors offers a practical path to smoother operation and more consistent outcomes.