17.4 in Grill Grates for Weber Spirit 300 Series - Even Heat

In this review the Paayox 17.4 in grill grates are assessed as a direct replacement for Weber Spirit 300 and Spirit II 300 series owners who want durable, professional-grade cooking surfaces without paying OEM prices. The bottom line: these cast iron grates deliver the kind of even heating and strong sear marks home cooks expect, and they come pre-seasoned to reduce sticking and rust while improving flavor over time. The reviewer found fit and build quality to match expectations for a replacement part and especially appreciated the clear size guidance included with the product.

Key Features

• Compatibility: Designed to replace Weber Spirit 300 and Spirit II 300 series grates including E310, E320, E330 and S310, S320, S330 models, which helps buyers avoid fit guesswork.
• Size: Each piece measures 17.4 in x 11.8 in and the set covers 17.4 in x 23.6 in for two units, ensuring the correct coverage for Spirit 300 style cooking areas.
• Material: Heavy-duty cast iron construction provides excellent heat retention and even heat distribution for consistent searing across the cooking surface.
• Pre-seasoned surface: The grates arrive pre-seasoned to resist sticking and rust, making initial use and cleanup easier while building flavor with continued use.
• Value and warranty: Packaged as a two-piece set with a one-year warranty from the seller, offering added confidence for replacement purchases.

Who It's For

This product is ideal for owners of Weber Spirit 300 and Spirit II 300 series grills who need a reliable replacement set of cast iron grates that match the original footprint and deliver strong sear performance. It also suits users looking to upgrade worn porcelain-coated or thin steel grates to heavier cast iron for better heat retention and grill marks.

It is less suitable for people who prefer low-maintenance, non-stick ceramic or stainless steel surfaces that require less seasoning and protection from rust, or for grills with nonstandard custom dimensions - always confirm the 17.4 in x 11.8 in piece size before ordering.

Pros & Cons

Pros

• Solid cast iron build gives even heating and clear sear marks for steaks and burgers.
• Pre-seasoned finish reduces sticking out of the box and improves with use.
• Designed to fit a long list of Weber Spirit and Genesis model numbers, so fit is usually reliable.
• Sold as a two-piece set and backed by a one-year warranty from the store.

Cons

• Cast iron requires ongoing maintenance to prevent rust and preserve seasoning.
• Buyers must double-check measurements and grill model compatibility before purchase to ensure correct fit.

Specifications

Brand	Paayox
Material	Cast iron
Piece size	17.4 in x 11.8 in (each)
Set size	17.4 in x 23.6 in (2 pcs)
Compatible models	Weber Spirit 300 / Spirit II 300 series (E310, E320, E330, S310, S320, S330)
OEM equivalents	Weber part numbers such as 7525, 7526 and related series listed by the seller
Warranty	1 year seller warranty

Our Verdict

For Spirit 300 series owners who want a sturdy, true cast iron replacement that improves searing and heat retention, these 17.4 in grill grates represent a sensible value purchase. They match the original footprint for most Spirit and some Genesis models, arrive pre-seasoned to reduce initial sticking, and are backed by a one-year warranty, making them a practical upgrade provided buyers maintain the cast iron properly.

Frequently Asked Questions

Will these grates fit my Spirit 300 grill?
They are sized for Spirit 300 and Spirit II 300 series models including E310, E320, E330 and S310, S320, S330; measure the grate area and confirm the 17.4 in x 11.8 in piece size before ordering.

Do the grates come ready to use?
Yes, the grates are shipped pre-seasoned so they resist sticking and rust initially, but regular seasoning and care are recommended for long life.

What maintenance do cast iron grates need?
Wipe clean after use, avoid harsh soap, reapply oil after cleaning to maintain the seasoning, and store dry to prevent rust.