Hongso cast-iron grill grates for Weber Genesis II 400-series — 3-piece set, heavy-duty searing

These Hongso cast-iron replacement grill grates are a heavy-duty, SGS-tested three-piece set engineered to fit Weber Genesis II 400-series grills and recreate superior searing and heat retention.

Upgrading or replacing worn grill grates makes a noticeable difference in performance and flavor. The Hongso 66097 Genesis II E-410 Grill Grates are made from thick cast iron for consistent heat distribution, distinct sear lines, and long service life. They match the fit of Weber Genesis II/LX 400 models (2017 and newer) and come as a three-piece assembly sized to the original factory layout.

How do these grates improve cooking results?

Cast iron absorbs and holds heat longer than thin steel, which helps deliver even cooking across the surface and more defined sear marks on meats and vegetables. The mass of the grates stabilizes temperature when you add cold food, reducing hot and cold spots for more predictable results.

• Heavy-duty cast iron for superior heat retention and searing
• Thicker cross-section reduces heat fluctuations when adding food
• Promotes even browning and consistent grill marks

Which Weber models are these compatible with?

These replacement grates are sized for Weber Genesis II and LX 400-series grills made from 2017 onward, matching the OEM footprint and tab locations. They are sold as a set of three to recreate the full factory cooking surface of Genesis II GS4 410 configurations.

• Compatible with Genesis II E/S-410, E/S-415, SE-410 and related LX/E/S-440 and 435 models
• Direct-fit replacement for OEM part numbers like Weber 66097 and 66089
• Fits a long list of Weber model codes listed for Genesis II 410-family grills

What are the dimensions and construction details?

The full three-piece set spans the original grill width and includes the manufacturer-style tabs so each grate seats securely. Individual pieces measure roughly 18 7/8" x 11 1/4" including the sticking tabs; the total assembled length is about 18 7/8" x 33 3/4".

• Three-piece set for full 410-series cooking area
• Each piece: 18 7/8" x 11 1/4" with tabbed edges
• Durable cast iron construction tested to SGS standards

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

Proper seasoning and routine cleaning keep cast-iron grates performing well and prevent rust. After washing with warm water and a stiff brush, dry fully and apply a thin coat of high-heat oil before storing or reheating the grill to rebuild the seasoning layer.

• Hand-clean with a firm brush; avoid harsh detergents that strip seasoning
• Dry immediately and apply a light coat of oil to protect the surface
• Re-season on the grill by heating with a thin oil layer to maintain nonstick properties

Who is this for? Grillers who own a compatible Weber Genesis II or LX 400-series model and want a sturdy OEM-fit upgrade will appreciate this Hongso set. It’s aimed at backyard cooks seeking better searing, longer-lasting grates, or a direct replacement for damaged factory parts. The set is also suitable for anyone restoring a Genesis II 410-style grilling surface who needs precise fit, reliable heat retention, and SGS-tested quality.