6788 Full Size Griddle Insert for Weber Genesis II 300 Series - Flat

In this review of the 6788 full size griddle insert, the bottom line is simple: it is a practical replacement for owners of Weber Genesis II 300 series grills who want a heavy-duty flat top that heats evenly and handles everyday backyard cooking. The reviewer found the griddle best for people who want a versatile flat top for smash burgers, breakfast, and stir-fry style cooking, because the carbon steel construction retains heat well and the dimensions match the Genesis II 300 platform. This review focuses on fit, build, and real-world cooking performance.

Key Features

• Exact fit for Genesis II 300 series: The insert is sized to work with many Weber Genesis II 300 and II LX 300 models so installation is straightforward for compatible units.
• Heavy-duty carbon steel: Premium-grade carbon steel construction gives the griddle good heat retention and resistance to warping under regular grill temperatures.
• Nonstick coating: A unique nonstick layer helps with food release and cleaning, reducing sticking during high-heat cooking when properly seasoned and handled.
• Complete package: The listing includes two handles, two silicone oven mitts and screws, which makes mounting and handling hot surfaces safer right out of the box.
• Replacement for multiple part numbers: Built to replace original Weber part numbers such as 6788, 66095 and others, simplifying upgrades or worn-part replacement.
• Compact full-size profile: At about 26 in by 18.7 in by 3 in thick, the griddle sits flush in the three-burner Genesis II 300 platform without taking extra space.

Who It's For

This griddle is aimed at Genesis II 300 series owners who cook a lot of flat-top style foods and want even heat across the surface. Grillers who make smash burgers, breakfast spreads, or vegetables will appreciate the heat retention and the complete accessories that come with the plate.

It is not intended for owners of Weber Genesis I 300 series grills or for those who insist on a perfect, permanent nonstick finish: some users report the coating can scratch or peel if scraped aggressively. Buyers who need cast-iron style seasoning behavior or who want a griddle for a different grill family should look elsewhere.

Pros & Cons

Pros

• Solid build quality with carbon steel that holds heat well for consistent cooking.
• Good compatibility with many Weber Genesis II 300 and II LX 300 models for easy replacement.
• Comes with handles, silicone mitts and screws so it is ready to install and use.
• Flat top surface works very well for smash burgers and breakfast items.

Cons

• Nonstick coating has mixed feedback; some users report scratching or peeling over time with heavy use.
• Not compatible with Genesis I 300 series, so careful size checking is required before purchase.

Specifications

Model compatibility	Weber Genesis II 300 and II LX 300 series (3-burner)
Dimensions	26 in L x 18.7 in W x 3 in Th
Material	Premium-grade carbon steel with nonstick coating
Included items	1 full-size griddle insert, 2 handles, 2 silicone oven mitts, screws
Replaces Weber parts	Original part numbers such as 6788, 66095, 66802, 66805, 7599
Fit notes	Not for Weber Genesis I 300 series; fits 2016 and newer Genesis II 300 models

Our Verdict

The 6788 full size griddle insert is a practical value for Genesis II 300 series owners who want a reliable flat top that heats evenly and arrives ready to install. For routine backyard cooking-burgers, eggs and veggies-the carbon steel construction and included handles and mitts make it a useful, cost-effective replacement; buyers should be aware the nonstick coating has mixed longevity reports and should season and maintain it accordingly.

Frequently Asked Questions

Will this fit my Genesis II E-310?
Yes. The griddle is listed as compatible with Genesis II E-310 and other 300 series models listed in the product notes.

What comes in the box?
The package includes the full-size griddle insert, two handles, two silicone oven mitts and screws for installation.

Is the nonstick coating durable?
The coating helps with release and cleaning, but customers report mixed results-avoid metal scraping and follow seasoning/care to extend life.