Cast Iron Griddle Plate & Grill Grates for Weber Genesis II 300 Series

Our review of these cast iron griddle plate and grill grates finds them best for owners of Weber Genesis II 300 and Genesis II LX 300 series grills who want a durable, highheat cooking surface that improves searing and heat retention. The single biggest reason to buy is the heavy cast iron construction and matched dimensions that replace the original Weber parts, delivering even heat distribution and professional sear marks across the full cooking area. Fit and finish are the standout points for anyone replacing worn or porcelainized grates.

Key Features

• Perfect fit: Designed to match Genesis II 300 and LX 300 series models and replace specific Weber part numbers for a direct swap without modification.
• Cast iron construction: Provides excellent heat retention and even distribution for faster, more consistent cooking across the whole surface.
• Complete package: Includes one cast iron grate and one dualsided griddle so users get a versatile setup for searing and breakfast-style cooking.
• Dualsided griddle: Smooth side for eggs and pancakes and ribbed side for grill marks, plus a builtin oil drain to reduce excess grease.
• Preseasoned surface: The grates are preseasoned for easier food release and reduced sticking right out of the box.
• Smaller slat gaps: Narrower spacing prevents small items from falling through while still creating strong sear lines.

Who It's For

This set is aimed at owners of Weber Genesis II 300 series or Genesis II LX 300 series grills (models listed in the product details) who want to replace worn grates with heavy cast iron pieces that improve searing, heat retention, and longevity. It is also good for home cooks who alternate between highheat searing and flatgriddle breakfast cooking and want one package to cover both needs.

People who prefer lowmaintenance porcelainized or stainless grates because they dislike reseasoning or added weight might look elsewhere, but those who value longterm durability, professional sear marks, and even heating will appreciate this cast iron set.

Pros & Cons

Pros

• Heavy cast iron delivers superior heat retention and consistent cooking results.
• Includes both a grate and a dualsided griddle, adding versatility for different foods.
• Preseasoned surface and smaller slat gaps improve food release and prevent small items from falling through.
• Direct fit for a long list of Genesis II 300 and LX 300 models, making replacement simple.

Cons

• Cast iron requires proper drying and occasional seasoning to prevent rust, unlike porcelain or stainless options.
• The added weight may make handling and storage a little more cumbersome for some users.

Specifications

Fits Models	Weber Genesis II 300 and Genesis II LX 300 series (2017 and newer models listed)
Includes	One cast iron grate and one cast iron dualsided griddle
Piece Dimensions	18.75 in x 13.25 in per piece
Replaces	Weber part numbers for grates and griddle (listed replacement parts)
Material	Cast iron, preseasoned surface
Griddle Features	Smooth side, ribbed side, builtin oil drain and lift hole

Our Verdict

This cast iron grate and griddle set is a solid replacement for compatible Genesis II 300 series grills, offering excellent heat retention, versatile cooking with a dualsided griddle, and a preseasoned finish that reduces sticking. It represents good value for anyone who wants longlasting sear performance and is willing to maintain cast iron properly.

Frequently Asked Questions

Will these fit my Genesis II E310?
Yes. The set is listed to fit Genesis II E310 and many other 300 series models from 2017 and newer.

Are the grates ready to use out of the box?
The pieces are preseasoned for improved food release, but users should follow care instructions and dry thoroughly to prevent rust.

Can the griddle handle highheat searing?
Yes. The cast iron construction provides even heat distribution and highheat capability for steaks and burgers while the griddle also offers a smooth side for delicate foods.