Full Size Griddle for Weber Genesis II 400 Series - Flat Top Insert

In this review of the Full Size Griddle for Weber Genesis II 400 Series, the bottom line is simple: it is a heavy-duty, full-coverage flat top insert for owners of 4-burner Genesis II grills who want to expand breakfast and griddle-style cooking options. Designed to match Weber 4-burner layouts from 2016 onward, this carbon steel griddle delivers strong heat retention and an easy-to-clean surface once properly seasoned, making it a practical replacement part or upgrade for anyone who cooks pancakes, bacon, smash burgers, or fajitas on a gas grill.

Key Features

• Full-size fit: The 33 in by 18.7 in plate covers the Genesis II 400 cooking area so users get a continuous flat surface for large batches of food.
• Premium carbon steel: Heavy-duty construction retains heat well for even browning and high surface temperatures useful for searing and smash burgers.
• Seasoned nonstick surface: The unique coating and recommended seasoning routine reduce sticking and improve release for pancakes and eggs after initial break-in.
• Anti-warp and corrosion resistant: Reinforced steel construction resists warping and common grill stresses so it stays flat under repeated high-heat use.
• Complete install kit: Ships with two handles, two silicone oven mitts and mounting screws so it is ready to install and remove safely.
• Grease management: Built-in grease system channels drippings for easier cleanup than cooking directly on burner grates.

Who It's For

This griddle is ideal for owners of Weber Genesis II 400 Series 4-burner gas grills (2016+) who want to expand their grill into a flat-top cooking surface for breakfasts, sandwiches, and high-heat searing. It is especially useful for home cooks who frequently prepare multiple portions and need consistent spread of heat across a wide area.

Those who should look elsewhere include owners of non-compatible grill models or shoppers who need a fully guaranteed, factory-backed original part; this is an aftermarket replacement that matches the original part numbers but is sold as an upgraded carbon steel insert.

Pros & Cons

Pros

• Large 33 in by 18.7 in cooking area covers the Genesis II 400 configuration for batch cooking.
• Heavy carbon steel construction provides excellent heat retention and even cooking across the plate.
• Includes handles, silicone mitts and screws so installation and removal are convenient and safer.
• Seasonable nonstick surface improves release and cleans up easily after use.

Cons

• The nonstick coating has received mixed reports; some users note scratching or peeling over time so careful seasoning and utensil choice are recommended.
• Only fits 4-burner Genesis II 400 Series models from 2016 onward, so it is not universal.

Specifications

Product type	Full-size griddle insert
Compatible grills	Weber Genesis II 400 Series 4-burner (2016+)
Material	Carbon steel with nonstick coating
Size	33 in L x 18.7 in W
Included accessories	2 handles, 2 silicone oven mitts, screws
Design features	Anti-warp construction and grease management system

Our Verdict

The Full Size Griddle for Weber Genesis II 400 Series is a practical, value-oriented upgrade for owners who want a dependable flat-top surface for breakfast foods and high-heat searing. With heavy carbon steel construction, a complete accessory kit, and strong heat retention, it fits the intended Genesis II models well and expands cooking versatility. Buy it if you have a compatible grill and are prepared to season and care for the surface to avoid coating wear.

Frequently Asked Questions

Will this griddle fit my Genesis II E-410?
Yes, it is designed to fit Genesis II 4-burner models including E-410 and several SE and S variants from 2016 onward; confirm your grill shape and size before buying.

Do I need to season the griddle?
Yes, seasoning before first use is recommended to build a protective layer and improve the nonstick performance.

What accessories come with the griddle?
The package includes two handles, two silicone oven mitts and screws for mounting and safe handling.