Hongso Cast-Iron Grill Grates for Weber Spirit 300 Series — Pair 17.5" x 11.9" for Even Heat & Strong Sear

These Hongso replacement cast-iron grill grates fit many Weber Spirit 300-series and Spirit II 300-series models and deliver even heat, strong searing, and durable, SGS-tested safety.

If your Weber Spirit E310/E315/E320/E330 or Spirit II 300-series grill needs a pair of reliable cooking grids, these Hongso matt cast iron grates offer a direct-fit replacement for many model numbers from the Spirit 300 line (2007–2017), various Genesis and Spirit II variations, and a long list of Weber part references. The set contains two 17.5" x 11.9" grates (total cooking area 17.5" x 23.8"), engineered to bring cast-iron heat retention and restaurant-style searing to your backyard barbecue while meeting safety standards verified by SGS testing.

Will these grill grates fit my Weber Spirit 300-series or Spirit II grill?

These grates are built for specific Spirit 300-era models and many compatible Weber models across the Spirit, Spirit II, Genesis, and other series. They do NOT fit Spirit 200-series, Spirit 300 grills manufactured since 2025, Genesis 300 series, or Genesis Silver A units — check the model and year before ordering.

• Included size: two grill grids at 17.5" x 11.9" each (total 17.5" x 23.8").
• Compatible with Spirit E310, E315, E320, E330 and S310/S315/S320/S330 (2007–2017) and many Genesis models listed in product details.
• Also fits Spirit II E310, S310, SP-310, SP-320, SP-330 and Spirit 2 GS4 models.
• Not compatible with Spirit 200 series, Spirit 300 models made from 2025 onward, Genesis 300 series, or Genesis Silver A.

How do Hongso cast-iron grates change cooking performance?

Cast iron delivers higher heat retention and more even temperature across the cooking surface compared with thin steel. That helps produce sharper sear marks, faster crust formation, and steadier grilling temperatures for steaks, burgers, vegetables, and thicker cuts that benefit from direct heat.

• Superior heat retention helps maintain consistent searing temperature.
• Thick matt cast-iron surface creates defined grill marks for visual and flavor appeal.
• Locks in juices by quickly sealing food surfaces, improving texture.
• Durable construction resists warping under normal grilling heat.

What are the materials, safety, and care considerations?

Hongso grates are cast from dense iron and come pre-season-ready or raw depending on the batch; they’ve passed SGS testing for safety. Proper seasoning, routine cleaning, and correct storage prolong the life and performance of cast-iron grates.

• Material: matt cast iron for even heating and long-term durability.
• Safety: SGS-tested to meet related safety standards.
• Care tips: dry after cleaning, re-season with oil, avoid harsh detergents that strip seasoning.
• Maintenance extends lifespan and improves nonstick properties over time.

How do I confirm my grill model and install these replacement grates?

Before buying, locate your grill model number (usually on a plate under the cookbox or on the grill’s frame) and compare it to the comprehensive list of supported Weber model numbers supplied with the product. Installation is simple: remove the old grates, place each Hongso grate into the cooking area (they’re sized to sit where the factory grates did), and check for stable seating before lighting the grill.

• Find your model number on the grill’s underside or owner’s documentation.
• Compare model numbers and manufacturing year with the compatibility notes.
• Swap grates cold and ensure they sit flush and stable in the cookbox.
• Season new or cleaned grates before high-heat cooking to develop a protective layer.

Who is this for: Home grillers who own compatible Weber Spirit 300-series or Spirit II 300-series models and want to upgrade to heavy-duty cast-iron cooking surfaces for better searing, heat retention, and long-term durability. These Hongso grates suit backyard chefs seeking professional-style grill marks and steadier cooking temperatures, provided they verify model compatibility against the detailed exclusions and supported Weber model list.