QuliMetal 19.5" Cast Iron Grill Grates for Weber Genesis 300 Series — Two-Piece Set, Heavy-Duty Searing & Heat Retention

Heavy-duty cast iron replacement grates engineered to fit Weber Genesis 300-series grills and deliver superior searing, heat retention, and long-term durability.

If your cooking grates are worn, flaking, or failing to hold heat, the QuliMetal 19.5" cast iron grill grates are a direct-fit replacement for many Weber Genesis 300 models and select Pit Boss units. Made from solid cast iron and finished for easier seasoning, this two-piece set restores high-temperature performance and improves sear marks compared with thinner porcelain-coated rods. The grate geometry has wider flat slats and narrower gaps to reduce flare-ups, keep smaller foods from falling through, and improve heat distribution across your cooking surface.

Which grills and model numbers will these grates fit?

These QuliMetal grates are designed for the original Weber Genesis 300-era chassis and several model variations produced between 2007 and 2016. They match the 19.5 x 12.9" dimension per grate and replace OEM parts referenced by older Weber catalog numbers.

• Compatible with Weber Genesis E/EP 310 & 320 (2007–2016) and Genesis S 310 & 320 (select years)
• Also fits Genesis E/S/EP 330 (2011–2016) and part numbers like 6512001, 6519099, 307524
• Works with Pit Boss PB700 series; NOT compatible with Weber Genesis II 300 or Genesis II LX 300

How do these grates change cooking performance?

The cast iron construction stores and radiates heat much more effectively than thin porcelain-coated rods, producing stronger sears and more even cooking across the surface. Proper seasoning and routine oiling create a naturally anti-stick layer for cleaner releases and easier cleanup over time.

• Thicker mass holds higher temperatures for consistent searing
• Flat wide slat design increases contact area for bolder grill marks
• Narrower gaps help prevent small foods from slipping through

What are the size, weight, and package details?

Each grate measures 19.5 x 12.9 inches; the set contains two grates that combine to 19.5 x 25.8 inches of cooking width. These replacement grates are notably heavier than many stock options, which contributes to their heat retention but requires sturdier handling when installing or cleaning.

• Individual grate: 19.5 x 12.9 inches
• Set dimensions: 19.5 x 25.8 inches total cooking area
• Total set weight ~15.17 pounds (heavier than many OEM rods)

How should I care for and maintain these cast iron grates?

Cast iron lasts longest when kept seasoned and cleaned gently. After each use, remove food debris, lightly oil the cooking surface while warm, and store in a dry place to protect against rust. Avoid harsh detergents and long soaking; re-season if the surface looks dull or sticky.

• Clean with a grill brush or scraper while warm
• Apply a thin coat of high-smoke-point oil after cleaning
• Re-season periodically by heating with oil to restore non-stick properties

Who is this for: Home grillers who own an older Weber Genesis 300-series or compatible Pit Boss and want to upgrade to robust cast iron grates for better searing, even heat, and a longer-lasting cooking surface. These grates are ideal if you frequently cook steaks, burgers, or other foods that benefit from a high-heat sear and want a replacement that resists chipping and rust better than thin porcelain rods.