Spirit Grill Replacement Grates for Weber Spirit 300 Series - Cast

Our review of these replacement grates finds them best suited to owners of Weber Spirit 300 and Spirit II E-310 series grills who need a heavy, long-lasting cooking surface. The single biggest reason to buy is the upgraded matte enamel cast iron construction, which delivers even heat distribution and a durable surface that resists rust and chipping. Buyers should confirm the grate dimensions match their grill model before ordering; when the fit is correct, these grates perform like a solid, budget-friendly replacement.

Key Features

• Exact fit options: Sold as a 2-piece set that together measure about 23 4/5 x 17 1/2 in, with each grate roughly 11 9/10 x 17 1/2 in, so users can match them to Spirit 300 and compatible Genesis models.
• Matte enamel cast iron: The upgraded enamel coating helps with even heat distribution and improves durability against rust and corrosion compared with uncoated iron.
• Wide compatibility: Labeled as replacements for multiple Weber part numbers and fits many Spirit 300, Spirit II and Genesis Silver series models, which simplifies finding a compatible grate.
• Care tip included: The manufacturer recommends a light coat of oil before first use to create a nonstick surface and better performance over time.
• Sturdy construction: Most customers report the grates feel heavy-duty and provide solid cookability, making them suitable for regular grilling.

Who It's For

This is a good choice for grill owners who want a cast iron replacement that closely matches original Weber grate feel and heat behavior, especially owners of Spirit 300 series, Spirit II E-310 and many Genesis Silver models. It suits cooks who appreciate heavy grates that hold heat well for searing and even cooking.

Those who should look elsewhere include buyers who need exact factory parts for uncommon or older Weber models not listed, or anyone unwilling to verify measurements first; a few customers noted size and gap differences, and one reported receiving a damaged piece, so inspection on arrival is recommended.

Pros & Cons

Pros

• Durable matte enamel cast iron provides even heat and strong cookability.
• Good compatibility across Spirit 300, Spirit II and many Genesis models simplifies replacement choices.
• Customers praise fit, cleaning ease and perceived value compared with originals.

Cons

• Some buyers report size or gap differences versus their originals, so measurement confirmation is necessary.
• A small number of customers experienced damage on arrival, so careful inspection is advised.

Specifications

Our Verdict

These replacement grates are a sensible, value-oriented option for Spirit 300 and many Genesis owners who want a heavy cast iron cooking surface with even heat and rust resistance. Confirm measurements before buying and inspect on arrival; when they fit, the grates deliver reliable cookability and easy cleaning that make them good value for routine grilling.

Frequently Asked Questions

Will these grates fit my Spirit 300 grill?
They fit many Spirit 300 series and Spirit II E-310 models; measure your existing grate and compare to the listed dimensions to be sure.

What material are the grates made from?
The grates are made from upgraded matte enamel cast iron for even heat and corrosion resistance.

Any care tips before first use?
Manufacturer suggests coating the grates lightly with oil before first use and allowing them to cool before removal for cleaning.