Grill Grates for Weber Spirit 300 Series - Durable Stainless Upgrade

In this review the reviewer looks at a pair of stainless steel replacement grates that aim to upgrade the cooking surface of Weber Spirit 300 and compatible grills. The bottom line: these grates are for grill owners who want a heavier, low-maintenance cooking surface that fits Spirit E310/S310 style models and a range of Genesis and Spirit variants. The most convincing reason to buy is the use of 7mm solid stainless steel rods that resist warping and deliver better sear marks than enamel-coated or thinner metal grates.

Key Features

• Perfect fit: Precisely sized to replace the original Spirit 300 series grates so they sit securely whether your control panel is front- or side-mounted.
• Heavy-duty rods: 7mm solid stainless steel rods provide durable heat retention and bold sear marks for steaks and burgers.
• Wide compatibility: Designed to work with Spirit E310, S310, Spirit II E-310, Spirit 700 and many Genesis B/C models and generations listed in the product notes.
• Easy to maintain: Smooth stainless surface cleans with brush and soapy water and requires no seasoning after the first use.
• Safe handling: Welded edges and smoothed corners reduce the risk of sharp edges when removing and installing grates.
• Gift-ready packaging: Shipped in a protective box intended to prevent shipping damage and present well as a replacement gift.

Who It's For

These grates are best for Spirit 300 series owners who want a long-lasting stainless replacement that keeps flavor and sear while making cleanup easier than cast iron. If you frequently grill and want consistent heat retention and strong sear marks, the heavier 7mm rods are a meaningful upgrade.

Owners who prefer the exact feel and heat behavior of enameled cast iron may want to keep the originals, since those surfaces can hold seasoning differently. Also, customers who expect absolute lifetime rust immunity should note some user reports of surface corrosion over extended heavy use or poor storage.

Pros & Cons

Pros

• Solid build quality with heavy 7mm stainless rods that resist warping and hold heat well.
• Easy to clean stainless surface that needs no regular seasoning.
• Wide compatibility with multiple Spirit and Genesis models, fitting securely in Spirit 300 grills.

Cons

• Some users have reported rust after long-term use, so proper drying and storage are recommended.

Specifications

Material	Non-magnetic stainless steel
Rod thickness	7mm solid rods
Individual grate size	17.3 in x 11.8 in
Set cooking area	17.3 in x 23.6 in (pair)
Compatibility	Weber Spirit 300 series, Spirit II E-310, Spirit 700, select Genesis Silver/Gold/Platinum B/C and Genesis 1000-3500
Replaces	Weber 7639, 7638 cast iron and select other Weber grate part numbers

Our Verdict

These stainless steel grates are a sensible upgrade for Spirit 300 owners who want stronger sear marks, easier cleaning, and a durable cooking surface that fits precisely. For the price and build quality they offer solid value, but owners should dry and store them properly to limit any chance of surface rust over extended heavy use.

Frequently Asked Questions

Will these fit a Spirit E310?
Yes. They are specifically sized to fit Spirit E310 and S310 models and sit correctly whether the control panel is front- or side-mounted.

Do these grates need seasoning like cast iron?
No. The stainless surface is easy to clean with soapy water and towel drying and does not require regular seasoning after the first use.

Are they durable against high heat and warping?
Yes. The 7mm solid stainless rods are designed to resist warping and retain heat for strong sear marks.