Weber 64645 9mm Stainless Steel Cooking Grates for GENESIS 300 Series Gas Grills – 2022 & Newer

What Problem This Part Solves

Cooking grates receive some of the hardest use of any grill component. Years of high heat, grease, food residue, scraping, and outdoor exposure can eventually leave the original grids worn or damaged.

Replacing the original grates with Weber 64645 can correct:

• Heavily worn cooking grates
• Damaged or bent stainless steel rods
• Excessive surface deterioration
• Broken welds
• Missing original grates
• Uneven or unstable cooking surface
• Grates that have become difficult to clean
• Used grills missing their original premium stainless steel grids

The 9mm stainless steel rod construction provides a substantial cooking surface while retaining the original factory configuration of compatible premium GENESIS models.

Key Features

• Genuine Weber replacement part
• Weber part number 64645
• Set of stainless steel cooking grates
• Heavy-duty 9mm stainless steel rods
• Designed for select 2022+ GENESIS 300 Series grills
• Factory replacement for compatible premium GENESIS models
• Durable stainless steel construction
• Excellent heat transfer and searing performance
• Easy to brush clean after preheating
• Resistant to the deterioration commonly associated with lower-grade cooking grids
• Replaces damaged, warped, heavily corroded, or worn original cooking grates
• Designed to fit the factory cookbox without modification
• Compatible with the 2022-generation GENESIS cooking system

The 9mm rod diameter is important: Weber's factory schematic explicitly identifies 64645 as the 9mm stainless steel grate set.

Compatibility / Fits Models

Weber 64645 is used on select 2022 and newer GENESIS 300 Series gas grills equipped from the factory with 9mm stainless steel cooking grates, including select:

• GENESIS SP-E-325s
• GENESIS SP-E-335
• GENESIS SP-S-325s
• GENESIS SP-S-335
• Select GENESIS Premium/Special Edition 300 Series models
• Select GENESIS 300 Series LP models
• Select GENESIS 300 Series natural gas models
• Other 2022+ GENESIS 300 configurations whose schematic specifies 64645

For example, Weber's official schematic for GENESIS SP-E-335 model 35413301 lists 64645 as the original 9mm stainless steel cooking grate set.

Weber also lists 64645 on GENESIS SE-E-325s model 35313001, confirming use across multiple premium 2022-generation GENESIS 300 configurations.

Fits most grills within this series—confirm the exact Weber model number before ordering.

Important: 64645 Is the 9mm Factory Grate Set

There are several stainless steel grate options that fit various GENESIS generations, so the part number matters.

Weber 64645 is specifically identified by Weber as:

“Set of SS grates, 9mm, Genesis (2022)”

This distinguishes it from other Weber grate sets such as:

• 66805 – 9mm stainless steel grates for select GENESIS II 300 Series grills
• 66802 – Stainless steel grates for GENESIS II / LX 300 Series grills
• 7852 – WEBER CRAFTED 7mm stainless steel grates for GENESIS 300 Series 2016+
• 7528 – Stainless steel cooking grates for the older GENESIS 300 Series prior to 2016

These parts may look similar but are associated with different GENESIS generations and configurations. Match the replacement to the grill's exact model number.

Installation / Use Instructions

1. Turn off the grill and allow the cookbox and existing cooking grates to cool completely.
2. Lift the existing cooking grates out of the cookbox and clean accumulated debris from the grate supports and surrounding area.
3. Position the Weber 64645 stainless steel grates into the factory supports and verify that they sit securely before preheating the grill.

For routine cleaning, Weber recommends preheating the grill and brushing stainless steel cooking grates clean with an appropriate stainless steel grill brush.

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FAQ Section

Does Weber 64645 fit my GENESIS grill?
64645 is used on select 2022 and newer GENESIS 300 Series grills equipped with the 9mm stainless steel grate system. Weber's official schematics confirm the part on models such as GENESIS SP-E-335 model 35413301 and GENESIS SE-E-325s model 35313001.

Are Weber 64645 cooking grates stainless steel?
Yes. Weber officially describes 64645 as a “Set of SS grates, 9mm”, meaning a set of 9mm stainless steel rod cooking grates.

How thick are the Weber 64645 cooking grate rods?
The rods are 9mm in diameter according to Weber's factory schematic.

Is Weber 64645 the same as Weber 7852?
No. Weber 64645 is the OEM 9mm stainless steel grate set shown in select 2022 GENESIS factory schematics. Weber 7852 is a WEBER CRAFTED replacement set made with 7mm stainless steel rods and marketed for GENESIS 300 Series grills from 2016 onward.

Does Weber 64645 fit older GENESIS II 300 Series grills?
Do not assume so. Weber lists other grate sets for GENESIS II models, including 66805 and 66802. 64645 is specifically identified in Weber's schematics as a Genesis (2022) 9mm stainless steel grate set.