{"product_id":"uniflasy-weber-genesis-ii-300-series-grill-parts-kit-e-310-s-310-fit-5-porcelain-flavorizer-bars-2-cast-iron-grates","title":"Uniflasy Weber Genesis II 300-Series Grill Parts Kit — E-310\/S-310 Fit, 5 Porcelain Flavorizer Bars \u0026 2 Cast-Iron Grates","description":"\u003cp\u003e\u003cstrong\u003eReplacement set of five porcelain-enameled flavorizer bars and two heavy-duty cast-iron cooking grates built to restore performance on Weber Genesis II 300-series GS4 grills.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf your Genesis II E-310, S-310 or other 300-series Weber grill parts are showing rust, uneven heat, or flare-ups, this Uniflasy kit supplies the main wear items that most affect cooking quality. The package replaces the cast-iron grates and the porcelain-coated flavorizer bars found on many 2017-and-newer Weber Genesis II and Genesis II LX models, matching the fit and layout those grills require.\u003c\/p\u003e\n\n\u003ch3\u003eWill these parts fit my Weber Genesis II E-310 or 300-series GS4 grill?\u003c\/h3\u003e\n\u003cp\u003eYes — the kit is designed for the 300-series Genesis II lineup (models produced 2017 and later). It aligns with common OEM mounting points and replaces several original part numbers used across the series.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with E-310, S-310, E-315, E-325, E-330, S-335, S-345 and similar 300-series models.\u003c\/li\u003e\n  \u003cli\u003eMatches original grate dimensions and flavorizer bar spacing for proper burner coverage.\u003c\/li\u003e\n  \u003cli\u003eWorks as a direct replacement for part numbers used across Genesis II grills.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do the cast-iron grates affect cooking results?\u003c\/h3\u003e\n\u003cp\u003eThe heavy cast-iron grates in this set hold and transfer heat efficiently, producing distinct sear marks and stable surface temperature for consistent grilling. Cast iron also smooths out hot spots so food cooks more evenly across the whole grate.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSuperior heat retention for better searing and caramelization.\u003c\/li\u003e\n  \u003cli\u003eEven heat distribution to reduce cold patches on the cooking surface.\u003c\/li\u003e\n  \u003cli\u003eDurable construction for long-term use when properly maintained and seasoned.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat do the porcelain-enameled flavorizer bars do, and why replace them?\u003c\/h3\u003e\n\u003cp\u003eFlavorizer bars shield the burners from drippings while vaporizing grease to add smoke flavor and help manage flare-ups. Over time the coating chips and rusts, which reduces their ability to protect burners and distribute heat evenly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePorcelain coating resists corrosion and limits direct flame contact.\u003c\/li\u003e\n  \u003cli\u003eVaporizes drippings to boost grilled flavor and reduce grease fires.\u003c\/li\u003e\n  \u003cli\u003eEvenly disperses heat to maintain consistent cooking across burners.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I maintain these replacement parts for best life?\u003c\/h3\u003e\n\u003cp\u003eRoutine cleaning and periodic seasoning keep cast-iron grates performing and prevent porcelain chipping on flavorizer bars. After each cooking session remove food debris and reapply a light coat of oil to the grates to prevent rust.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBrush grates after use and re-season with high-smoke-point oil when cool.\u003c\/li\u003e\n  \u003cli\u003eWipe flavorizer bars clean of heavy residue; replace if coating is extensively damaged.\u003c\/li\u003e\n  \u003cli\u003eStore the grill covered in damp or coastal climates to limit corrosion.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: This Uniflasy replacement kit is aimed at owners of Weber Genesis II 300-series GS4 grills who want to restore reliable heat, reduce flare-ups, and extend the life of their appliance without searching for multiple individual parts. It's also a practical choice for anyone replacing worn OEM grates and flavorizer bars to return the grill to near-original performance.\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: Are these grates and flavorizer bars direct replacements for Weber part numbers?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The Uniflasy kit replaces common Genesis II part numbers and fits 300-series GS4 grills from 2017 onward.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How do I season the cast-iron grates after installation?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Clean, dry the grates, coat lightly with high-smoke-point oil, heat the grill for 15–20 minutes, then wipe excess. Repeat as needed.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Uniflasy","offers":[{"title":"Default Title","offer_id":56840825962836,"sku":"B09MLDFWZR","price":154.44,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/uniflasy-front-packaging-weber-genesis-ii-300.jpg?v=1787073380","url":"https:\/\/gardenluxe.co.uk\/products\/uniflasy-weber-genesis-ii-300-series-grill-parts-kit-e-310-s-310-fit-5-porcelain-flavorizer-bars-2-cast-iron-grates","provider":"Gardenluxe Uk","version":"1.0","type":"link"}