{"product_id":"gcostar-cast-iron-grill-grates-for-weber-spirit-300-series-e310-17-5-two-piece-set-heavy-duty-sear-heat-retention","title":"Gcostar Cast Iron Grill Grates for Weber Spirit 300 Series E310 17.5\" — Two-Piece Set, Heavy-Duty Sear \u0026 Heat Retention","description":"\u003cp\u003e\u003cstrong\u003eThese Gcostar cast iron cooking grates (two-piece set) replace the factory grates on Weber Spirit 300 Series grills, delivering a durable, high-heat surface for searing and even cooking.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf your Weber Spirit E310 (or related Spirit 300 Series or compatible Genesis models) needs sturdier, longer-lasting grates, the Gcostar Spirit E310 17.5\" cast iron set is made to match the original fit while improving heat retention and sear performance. Each piece measures 17.5 x 11.9 inches and the set covers the full 17.5 x 23.8-inch cooking area. The matte cast iron construction resists warping and helps form attractive grill marks when seasoned correctly.\u003c\/p\u003e\n\n\u003ch3\u003eWill these grates fit my Weber Spirit E310, E320 or S310 grill?\u003c\/h3\u003e\n\u003cp\u003eYes — the Gcostar set is designed to fit the Weber Spirit 300 Series family (E310, E320, E330 and S310, S320, S330) and several related Spirit II models. They also align with many Genesis models and specific Weber part numbers, but it’s best to confirm your grill model before buying.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect fit for Spirit 300 Series and Spirit II G4 variants (not Genesis II LX).\u003c\/li\u003e\n  \u003cli\u003eCompatible with Weber part numbers such as 65619, 7011, 7525, 7526 and others listed by Weber.\u003c\/li\u003e\n  \u003cli\u003eEach piece: 17.5 x 11.9 in; set covers 17.5 x 23.8 in total.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do these cast iron grates change cooking performance?\u003c\/h3\u003e\n\u003cp\u003eCast iron holds heat better than thin porcelain-coated grates, which helps achieve a stronger sear and more consistent temperature across the cooking surface. When seasoned and used properly, these grates create pronounced grill marks and can improve overall caramelization of meats and vegetables.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMatte cast iron construction for superior heat retention and searing.\u003c\/li\u003e\n  \u003cli\u003eThicker profile reduces hot spots and evens heat distribution.\u003c\/li\u003e\n  \u003cli\u003eSeasoning improves nonstick behavior and flavor development over time.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat care and maintenance do cast iron grates require?\u003c\/h3\u003e\n\u003cp\u003eCast iron needs a bit more attention than porcelain-coated options but is straightforward to maintain: clean gently, dry completely, and season regularly. Following a simple routine will keep the grates rust-free and performing well for years.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSoak in warm, soapy water if needed, then scrub with a soft brush or sponge.\u003c\/li\u003e\n  \u003cli\u003eDry thoroughly after cleaning to prevent rust; heat briefly on the grill to evaporate moisture.\u003c\/li\u003e\n  \u003cli\u003eApply a thin layer of cooking oil and heat the grates before each use to maintain seasoning.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre these grates compatible with Genesis and other Weber models?\u003c\/h3\u003e\n\u003cp\u003eGcostar cast iron grates list compatibility with many Genesis Silver\/Gold variants (2000+ models), select Genesis Platinum ranges, and several Weber model numbers. They may also fit some Smokefire pellet grill configurations, but verify your model number for a secure match.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eListed compatibility includes Genesis Silver B\/C, Gold B\/C, Genesis I–IV and select Platinum models (2000–2010 era).\u003c\/li\u003e\n  \u003cli\u003eAlso referenced to Weber model numbers such as 46510001, 49010001 and others; check your grill’s manual or base model label.\u003c\/li\u003e\n  \u003cli\u003eNot all Genesis II or LX variants share the same grate footprint — confirm before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: Grill owners who want a durable aftermarket replacement that improves searing and heat-holding on compatible Weber Spirit and select Genesis grills. This set is ideal for home cooks who regularly sear steaks or want a heavier, restaurant-style grate surface. If you prefer low-maintenance porcelain or have an unsupported Weber model, double-check fitment or consider a different grate style.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do these grates fit Weber Spirit 300 Series models?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. They’re sized for Spirit 300 Series (E310, E320, E330, S310, S320, S330) and certain Spirit II G4 variants—confirm your model label first.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How should I clean and season these cast iron grates?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Soak and scrub with mild soap, dry completely, then apply a thin oil layer and heat to maintain seasoning and prevent rust.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Gcostar","offers":[{"title":"Default Title","offer_id":56823264313684,"sku":"B0D5H7XHS8","price":103.02,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/gcostar-front-view-grates.jpg?v=1786976475","url":"https:\/\/gardenluxe.co.uk\/products\/gcostar-cast-iron-grill-grates-for-weber-spirit-300-series-e310-17-5-two-piece-set-heavy-duty-sear-heat-retention","provider":"Gardenluxe Uk","version":"1.0","type":"link"}