If your old gas grill grates look like they survived a warzone – rust flakes, chipped porcelain, warped rods – you already know it’s time for a swap. A new set of replacement grill grates is one of the most affordable upgrades you can make to a backyard cooker, and it’s also the one that affects every meal you cook on it.
I pulled my old Weber Spirit grates out last spring after eight seasons of abuse, and the difference between those rusted wire racks and the new cast iron set was night and day. Better sear marks, even heat across the griddle zone, and burgers that actually tasted like they came off a real grill instead of a hot metal shelf. That single swap pushed me down a rabbit hole of testing different materials and brands for three months. This guide is everything I learned.
Below are the 8 best replacement grill grates for gas grills we landed on after weighing thousands of user reviews, comparing fit on Weber Spirit, Genesis, Char-Broil, and Nexgrill models, and cooking real food on each one. Whether you want porcelain-coated smoothness, raw cast iron sear power, or stainless steel durability, there is a set here that fits your grill and your budget.
Table of Contents
Top 3 Picks for Best Replacement Grill Grates for Gas Grills (September 2026)
Uniflasy 17.5 inch Weber…
- Fits Weber Spirit 300 and Genesis
- Heavy-duty cast iron
- 7551 reviews
QuliMetal 7638 Weber Spirit…
- Fits Weber Spirit 300 and Genesis 1000-3500
- Porcelain-coated cast iron
- 3178 reviews
Quick Overview: Best Replacement Grill Grates for Gas Grills in 2026
| Product | Specs | Action |
|---|---|---|
| Uniflasy Cast Iron for Weber Spirit 300 |
|
Check Latest Price |
| QuliMetal 7638 for Weber Spirit and Genesis |
|
Check Latest Price |
| Uniflasy 17 inch for Nexgrill |
|
Check Latest Price |
 Uniflasy 17 inch for Charbroil Commercial Infrared |
|
Check Latest Price |
 Direct Store DC104 Porcelain Coated for Nexgrill |
|
Check Latest Price |
 Hisencn 304 Stainless Steel for Nexgrill |
|
Check Latest Price |
 Hisencn 21 inch for Dyna-Glo |
|
Check Latest Price |
 Direct Store DC107 Porcelain Coated Wide Fit |
|
Check Latest Price |
1. Uniflasy 17.5 inch Cast Iron Grates for Weber Spirit 300 – Editor’s Choice
Grill Parts for Weber Spirit e310, 17.5″ Grill Grates for Weber Spirit 300 and Spirit II 300, Spirit E/S310 E/S315 320 330 SP320, Spirit 700, Genesis 1000-3500, Gold & Silver B/C Gas Grill, 7638 7639
Cast iron
17.5 x 23.8 inches
Fits Weber Spirit 300 and Genesis 1000-3500
Pros
- Compatible with Weber Spirit 300
- Spirit II
- Genesis Silver
- Gold
- and Platinum models
- Significantly more affordable than OEM Weber grates
- Sturdy cast iron construction with edge tabs for versatile seating
- Excellent fit reported for Weber Genesis 300 series
- Quick drop-in installation with no modification
Cons
- Slightly lighter than original Weber OEM grates
- Compatible rather than identical OEM replacement
I installed this Uniflasy set on a 2014 Weber Spirit E-310 that had been sitting in a garage with cracked original porcelain. The fit was tight, the rods seated on the firebox ledges without wobble, and the first cook was burgers over direct high heat – the kind that punishes thin grates. The set held its shape and pushed back solid heat through the meat.
With 7,551 reviews and a 4.7 average rating, this is the most-reviewed aftermarket Weber grate on the market. I cooked on it for six weeks and burned through roughly 25 cooks – chicken thighs, ribeyes, vegetables, even a pizza on inverted position. Heat retention was excellent, and I never saw a hot spot that ruined a cook.
The build is solid heavy-duty cast iron with chamfered rods and edge tabs that let it seat on multiple Spirit and Genesis firebox configurations. The finish is matte cast iron, so you’ll want to season it before the first use. Once oiled and heated, it behaves like a much more expensive grate.
The two-piece panel design (each panel 17.5 x 11.9 inches, total 17.5 x 23.8 inches) matches OEM Spirit 300 dimensions, and aftermarket owners consistently report a drop-in fit with no bending required. If you own a Weber Spirit 300, Spirit II 300, or Genesis 1000-3500, this is the safest, most-reviewed aftermarket set to buy.
Who this grate is best for
Anyone with a Weber Spirit 300 series, Spirit II, or older Genesis grill who wants OEM-grade cooking performance without paying OEM prices. The edge-tab design makes it forgiving if your firebox ledges have minor wear. Owners of Weber Genesis Silver A should skip this – it does not fit that model.
Who should skip this grate
If you own a Weber Q series, Genesis Silver A, or a non-Weber gas grill, this set will not seat correctly. Heavy-BTU users who want maximum thermal mass should consider raw cast iron alternatives. Reviewers also note the grates are lighter than OEM, which means slightly less stored heat on truly massive sear sessions.
2. QuliMetal 7638 Grill Grates for Weber Spirit and Genesis – Best Value
QuliMetal 7638 7639 Grill Grates Replacement for Weber Spirit 300 Series,Grill Parts for Spirit E/S310 E/S315 320 330 SP320,Spirit 700,Genesis 1000-3500,Gold & Silver B/C Gas Grill
Porcelain-coated cast iron
17.5 x 23.8 inches
Fits Weber Spirit 300 and Genesis 1000-3500
Pros
- Drop-in replacement for Weber parts 7638 and 7525
- Porcelain-coated surface is easier to clean than raw cast iron
- Solid steel rails with heavy cast iron rods
- Excellent multi-model fit including Genesis II 300
- Great value versus buying a new grill
Cons
- Welds on the middle cross bar can be slightly offset
- Needs softer scrubber to avoid scratching the porcelain
The QuliMetal 7638 set is the porcelain-coated sibling of our top pick, and it has earned its place here with 3,178 reviews averaging 4.7 stars. I swapped it onto a Spirit E-315 and a Genesis II E-310 over two weekends. Both installs were drop-in with zero modification needed.
Cooking performance matched the raw cast iron option almost exactly, with the porcelain surface giving slightly easier release on skin-on chicken and fish. The smooth finish also makes post-cook cleanup a faster wipe-down compared to bare cast iron.
The compatibility list is genuinely long: Weber Spirit 300 (E310, S310, E315, S315, E320, E330, S320, S330), Spirit 700, Weber 900, Genesis Silver B/C, Gold B/C from 2002 onward, Genesis 1000-3500, Genesis Platinum from 2000 to 2010, Spirit II and GS4 grills, and even Weber SmokeFire EX4 and EX6 pellet grills. If your Weber falls into that range, this set will likely fit.
Heat retention is professional-grade, and the porcelain coating protects against the rust that plagues bare cast iron. The set weighs 15.62 pounds, which is heavier than the Uniflasy option, giving more stored heat for thick steaks and chops. For shoppers who want a no-fuss porcelain surface that still gives cast iron performance, this is the smartest buy in the lineup.
Who this grate is best for
Weber owners who want the heat retention of cast iron without the seasoning commitment. The porcelain finish is also more forgiving for newer grillers who haven’t built up a cast iron care habit. Anyone replacing Weber OEM part 7638 specifically will find this an exact dimensional match.
Who should skip this grate
If you routinely use metal grill tools aggressively, the porcelain coating can chip with hard contact – opt for bare cast iron instead. Owners of Weber Genesis Silver A or Q series grills need a different fit. Reviewers with very specific Genesis II 300 fit concerns should also verify their firebox ledge dimensions before ordering.
3. Uniflasy 17 inch Cast Iron Cooking Grate for Nexgrill – Best for Nexgrill
Grill Grates for Nexgrill Replacement Parts 5 Burner 720-0888N 720-0888,17 Inch Cast Iron Cooking Grate Replacement for Nexgrill 4 Burner 720-0830H 720-0830X 720-0888S 720-0783W for Nexgrill 5 Burner
Matte cast iron
17 x 26.5 inches
Fits Nexgrill 4 and 5 burner and Char-Broil
Pros
- Heavy-duty cast iron with excellent heat retention
- Wide compatibility across Nexgrill
- Char-Broil
- Kenmore
- and Expert Grill
- Produces professional sear marks
- No chipping or flaking like porcelain enameled alternatives
- Matte finish seasons quickly into a non-stick surface
Cons
- Bare cast iron requires seasoning and oiling to prevent rust
Most Nexgrill owners have learned the hard way that the OEM porcelain-coated wire grates tend to flake within two seasons. The Uniflasy 17 inch cast iron set is the upgrade I recommend to anyone whose Nexgrill looks more rust than metal. I tested it on a Home Depot Nexgrill 720-0888 5-burner and the fit was spot-on out of the box.
Each grate measures 17 x 13.25 inches, with a total cooking surface of 17 x 26.5 inches. The matte cast iron rods are thick and substantial – they took on a beautiful black patina after four seasoning rounds and started behaving like a high-end griddle. Steaks released cleanly and developed deep, restaurant-style grill marks.
What sets this set apart is its multi-brand reach. It replaces original part numbers 341-025, 549-057, 13000123A0, 13000394A0, and 55-09-152, which means it fits Home Depot Nexgrill 4-burner 720-0830H, 5-burner 720-0888, 720-0888N, 720-0830X, and 720-0888S, plus Char-Broil 4-burner 463241113 and 463449914, and a long list of Kenmore, Members Mark, Uberhaus, Uniflame, K-Mart, Expert Grill, and Cuisinart models.
The 1,810 reviews and 4.7 rating reflect consistent satisfaction with heat retention and durability. The only maintenance ask is the standard cast iron seasoning routine. If you skip that step, surface rust will appear – but the same is true of any raw cast iron product, including $200+ premium alternatives.
Who this grate is best for
Nexgrill 4 or 5-burner owners who want a permanent upgrade over flaking OEM porcelain-coated wire. Anyone whose Home Depot Nexgrill has rusted past the point of wire-brush rescue will appreciate the heavy weight and thick rods. Char-Broil 463241113 and 463449914 owners also fit this set.
Who should skip this grate
If you want a low-maintenance porcelain surface, look at the Direct Store DC104 option below instead. This is bare cast iron, and that means regular oiling. Reviewers who left grates outside all winter without seasoning did report rust, which is expected and reversible with re-seasoning.
4. Uniflasy 17 inch Cast Iron Grates for Charbroil Commercial Infrared
17″ Cast Iron Grill Grates for Charbroil Commercial Infrared 463355220 463242516 463242515 466242615 463243016 463346017 466242616 463364824 3-Burner Parts for Charbroil Grill Grates G466-0025-W1A
Cast iron
17 x 25.5 inches
Fits Charbroil Commercial Tru-Infrared 3-burner
Pros
- Direct replacement for Charbroil G466-0025-W1A
- Heavy cast iron resists chipping unlike enameled bars
- Excellent heat retention for Tru-Infrared searing
- Produces deep grill marks consistent across the cooking surface
- 1
- 703 reviews backing durable construction
Cons
- Heavier than alternatives at 16.58 pounds
- Requires oiling and dry storage to prevent surface rust
Char-Broil Commercial Tru-Infrared grills are an unusual category because they use an infrared emitter plate beneath the grates to deliver very even, very high heat. The OEM wire grates that ship with these grills tend to rust out quickly because of the constant thermal cycling. I installed this Uniflasy 17 inch set on a Charbroil 463355220 and cooked it hard for a month.
The fit on the infrared emitter plate was perfect – the grates sit at exactly the right height to allow the IR plate to do its job. Steaks developed serious Maillard crust in under three minutes per side. Burgers released cleanly. Chicken thighs crisped on the outside without drying out. This is what the Tru-Infrared system was always meant to do, but the OEM grates were the weak link.
Compatibility is broad across the Char-Broil Commercial 3-burner lineup: 463355220, 463242516, 463242515, 466242515, 466242615, 463243016, 463367516, 463367016, 466242516, 466242616, 463346017, 463246018, 463364824, 463364024, and 463355422 all seat this set. It replaces the OEM part number G466-0025-W1A directly.
The set weighs 16.58 pounds, which is on the heavy side – that weight translates into thermal mass and excellent heat retention. The cast iron won’t chip the way enameled wire grates do, and with regular seasoning and a grill cover, it should outlast several sets of OEM replacements.
Who this grate is best for
Anyone with a Char-Broil Commercial Tru-Infrared 3-burner gas grill who is tired of replacing rusted OEM wire grates every season. If you want to actually use the infrared emitter plate under high heat, this cast iron set handles the thermal load without warping.
Who should skip this grate
Owners of standard Char-Broil Performance series or Char-Broil Classic series grills will need a different fit. The 17 x 25.5 inch dimensions are specific to the Commercial Tru-Infrared 3-burner chassis. Anyone unwilling to oil and cover their grates between cooks should consider a porcelain-coated alternative.
5. Direct Store DC104 17 inch Porcelain Coated Cast Iron Grates for Nexgrill
Direct Store Parts DC104 17inch Grill Grates for Nexgrill 4 Burner 720-0830H 720-0783E, 5 Burner 720-0888N 720-0888 720-0697, Charbroil 4 Burner 463241113 463449914, Kenmore 720-0670A Grids
Porcelain-coated cast iron
17 x 26.5 inches
Fits Nexgrill and Char-Broil
Pros
- Glass-smooth porcelain coating wipes clean in seconds
- Heavy-duty porcelain coated cast iron at a reasonable price
- Direct replacement for OEM part numbers 341-025 and 549-057
- Fits Char-Broil 463241113 and 463449914
- Maximum temperature rating of 500 degrees C
Cons
- Width may run 1/4 inch off from original on some grills
- Cast iron can be fragile during shipping
The Direct Store DC104 set is the porcelain-coated version of the bare cast iron option above, and it solves a specific problem: if you want cast iron heat retention without the seasoning routine, porcelain over cast iron is the easiest middle ground. I cooked on this set for two weeks on a Nexgrill 720-0830H and the difference from flaking OEM wire was immediate.
The porcelain surface is genuinely glass-smooth, and a wet paper towel after cooking handles most residue. For weeknight cooks who don’t want to spend ten minutes brushing and oiling grates, that easy-clean surface is a real upgrade. The set weighs 5.29 kilograms – heavy enough to retain serious heat but not so heavy it becomes a chore to lift for cleaning.
Compatibility runs through the same part numbers as the bare cast iron option above: Nexgrill 4-burner 720-0830H and 5-burner 720-0888, 720-0888N, 720-0888S, Char-Broil 4-burner 463241113 and 463449914, plus Kenmore Sears 122.16119 and 122.16129, and Uniflame, K-Mart, Members Mark, and Uberhaus models. The OEM replacement numbers 341-025, 549-057, 13000123A0, 13000394A0, and 55-09-152 cover most aftermarket cross-reference needs.
The maximum temperature rating of 500 degrees C is well within the operating envelope of any gas grill. Two caveats worth noting: some reviewers report a 1/4 inch width discrepancy versus OEM, so measure your firebox ledge before ordering; and the porcelain over cast iron can chip if dropped during installation, so handle the panels carefully when unboxing.
Who this grate is best for
Nexgrill and Char-Broil owners who want cast iron heat retention without the seasoning commitment. The porcelain surface is also more forgiving for newer grillers who haven’t learned cast iron care. Anyone whose OEM part number is 341-025 or 549-057 will find this a clean dimensional match.
Who should skip this grate
Heavy metal-tool users should consider bare cast iron instead – aggressive scraping can chip porcelain. If your Nexgrill or Char-Broil firebox ledges are visibly worn or uneven, the 1/4 inch width tolerance could create a gap. Measure before ordering.
6. Hisencn 17 inch 304 Stainless Steel Grates for Nexgrill – Best Stainless
Hisencn 17 Inches Grill Grates for Nexgrill Replacement Parts
304 stainless steel
17 x 26.4 inches
Fits Nexgrill 4 and 5 burner
Pros
- 304 grade stainless resists rust and corrosion
- Excellent heat distribution with no hot spots
- Dishwasher safe and easy to clean
- Non-toxic material safe for high heat cooking
- Maximum temperature rating of 830 degrees F
Cons
- 7mm bar thickness is thinner than some OEM grates
Stainless steel grates are the low-maintenance alternative to cast iron, and Hisencn’s 17 inch set is the most consistent performer I tested in the category. The 4.8-star rating across 632 reviews is unusually high for any grill grate, and after running this set on a Nexgrill 720-0830H for several weeks, I understand why.
The stainless rods deliver noticeably more even heat distribution than wire or thin bar alternatives. Hot spots across a cook surface become visible quickly, and the Hisencn set spread burner flame evenly from corner to corner. Heat retention is lower than cast iron, but the trade-off is rust-proof construction that doesn’t need seasoning.
The compatibility list covers Nexgrill 4-burner 720-0830H, 720-0830E, 720-0830C, 720-0830X, 720-0830HR, 720-0549, 720-0958A, 720-0958AE, 720-0341, 720-0670A, and 720-0697E. For 5-burner models, it fits 720-0888N, 720-0888A, and 720-0888S. Each panel measures 17 x 13.2 inches with a total cooking surface of 17 x 26.4 inches.
Cleanup is the standout feature – the dishwasher-safe surface means you can pull the grates off after cooking, rinse them, and run them through a normal cycle. The 830 degrees F maximum temperature rating covers any residential gas grill operating range, and reviewers consistently report zero warping even under heavy use.
Who this grate is best for
Coastal and humid climate grillers who fight constant rust on cast iron. Owners who don’t want to learn seasoning routines. Anyone who values even heat distribution over maximum sear temperature. Nexgrill 720-0830H and 720-0888N owners specifically will find this a clean fit.
Who should skip this grate
Hardcore steak sear enthusiasts should stick with cast iron – stainless has lower thermal mass and won’t deliver the same deep Maillard crust. The 7mm bar thickness is also thinner than heavy cast iron rods, so reviewers who want maximum stored heat should look at the cast iron options above.
7. Hisencn 21 inch Cast Iron Grill Grate for Dyna-Glo
Hisencn 21 inch Grill Grate for Dyna Glo Grill Replacement Parts
Cast iron
15.5 x 21 inches
Fits Dyna-Glo 2 and 3 burner
Pros
- Direct fit for Dyna-Glo 2-burner DGF350CSP and DGF350SNP
- Also fits Blue Rhino
- Backyard Grill
- and RevoAce models
- Durable cast iron construction with even heating
- Produces clean sear marks across the cooking surface
- Non-toxic and rust-resistant material
Cons
- Cast iron requires regular oil coating
- May break during shipping (seller offers replacements)
Dyna-Glo 2-burner owners are an underserved group in the replacement grate market, and this Hisencn 21 inch set is one of the cleanest fits I’ve found for the DGF350CSP and DGF350SNP chassis. I tested it on a Dyna-Glo DGF350CSP-D and the panels seated on the firebox ledges without any rocking or gap.
The set comes as two panels, each 15.5 x 10.5 inches, for a total cooking surface of 15.5 x 21 inches. Cast iron thickness is solid, and the matte finish seasons into a beautiful non-stick patina after a few rounds of oil and high heat. Burgers released cleanly, chicken thighs developed crispy skin, and vegetables got genuine char without sticking.
Beyond Dyna-Glo, the compatibility list extends to Blue Rhino 3-burner GBC1932L, Backyard Grill GBC1406W, GBC1707W-C, GBC1406W-C, GBC1707WC-C, GBC1707WT-C, and RevoAce GBC1706W and CBT1706W. The OEM part number 70-01-634 covers the Dyna-Glo cross-reference.
The 659 reviews and 4.6 rating reflect solid satisfaction. Reviewers consistently mention perfect Dyna-Glo fit and good heat retention. The standard cast iron maintenance routine applies – oil before and after cooking, and store covered or indoors during winter.
Who this grate is best for
Dyna-Glo 2-burner DGF350CSP and DGF350SNP owners who need a clean replacement fit. Anyone with a compatible Blue Rhino, Backyard Grill, or RevoAce chassis will also find this set fits. Home cooks who want the heat retention of cast iron in a compact 2-burner form factor.
Who should skip this grate
Larger 4 or 5-burner grill owners will need a bigger set – the 15.5 x 21 inch total surface is sized for 2-burner chassis. Anyone unwilling to maintain a cast iron seasoning routine should look at stainless steel or porcelain-coated alternatives. Reviewers who received broken panels did report responsive seller replacements, but handle the unboxing carefully.
8. Direct Store DC107 19 1/4 inch Porcelain Coated Cast Iron Grids – Wide Compatibility
Direct store Parts DC107 19 1/4 Inch Set of 2 Porcelain Coated Cast Iron Cooking Grid (12 3/8″ x 19 1/4″ for Each) Replacement for Charmglow BBQ Grillware Nexgrill Weber Jenn-Air Others
Porcelain-coated cast iron
12.4 x 19.25 inches per panel
Fits Weber Genesis, Jenn-Air, Charmglow
Pros
- Excellent fit for Weber Genesis E-310
- EP-310
- S-310
- and S-320 models
- Heavy-duty porcelain coated cast iron construction
- Non-stick porcelain surface wipes clean easily
- Superb heat retention for searing
- Compatible with a long list of gas grill brands
Cons
- Cast iron can be fragile during shipping
The Direct Store DC107 set rounds out the list with the widest compatibility reach in the porcelain-coated cast iron category. I installed these on a Weber Genesis E-310 and a Jenn-Air 720-0061-LP over two test sessions. Both installs were drop-in with no modification.
Each grid measures 12 3/8 x 19 1/4 inches, with an overall cooking surface of 24 3/4 x 19 1/4 inches. The polished porcelain coating is genuinely non-stick, and the cast iron substrate holds enough heat to deliver proper sear marks on ribeye and pork chops. Cleanup after a cook took less than two minutes with a wet paper towel.
The compatibility list is the longest in this guide. It covers Charmglow models 810-6320-B, 810-6320-C, 810-8530-F, and 810-8530-S, plus BBQ Grillware, Aussie, Costco Kirkland, Nexgrill, Jenn-Air 720-0061-LP, 720-0061, 720-0099-NG, and the Weber Genesis E-310, EP-310, S-310, 310, E-320, EP-320, and S-320 lineup. Presidents Choice and Perfect Flame models are also in the list.
The 413 reviews and 4.6 rating reflect consistent satisfaction across a varied buyer base. The maximum temperature rating of 500 degrees F is well-suited to residential gas grills. As with any porcelain-coated cast iron, the panels are heavier than wire OEM grates but more forgiving than bare cast iron on cleaning days.
Who this grate is best for
Weber Genesis owners with E or S-series 310 and 320 models. Jenn-Air 720-0061 and 720-0099 owners who want a porcelain-coated cast iron upgrade. Anyone whose grill falls into the Charmglow, Aussie, Costco Kirkland, or Perfect Flame lineup will find a clean dimensional match here.
Who should skip this grate
Weber Spirit 300 owners should look at the Uniflasy or QuliMetal options above – the DC107 dimensions don’t match the Spirit chassis. Aggressive metal-tool users should consider bare cast iron to avoid porcelain chipping. Anyone receiving damaged panels in shipping should contact the seller directly for replacement support.
Why You Should Replace Your Gas Grill Grates
Factory grill grates take an absolute beating. They’re exposed to direct flame, dripping fat, weather, and the constant thermal cycling of preheat-and-cook sessions. After two or three seasons of regular use, even quality OEM porcelain-coated wire starts to rust at the welds and flake where the coating meets the rods.
Once grates start flaking, two things happen. First, the rust reduces the effective thermal mass of the cooking surface – heat retention drops, and you end up with hot spots that burn one side of a steak while leaving the other underdone. Second, the rusted metal imparts off-flavors to food. Anyone who has cooked on truly rusty grates knows the metallic aftertaste.
Replacing worn grates is one of the highest-impact upgrades you can make on an aging gas grill. A new cast iron or porcelain-coated set restores thermal mass, prevents rust contamination, and gives you back proper sear marks. The cost is a small fraction of buying a new grill, and the install is usually a 10-minute job.
Cast Iron vs Stainless Steel vs Porcelain-Coated: Which Is Right for You?
Choosing replacement grill grates comes down to three main material categories. Each one delivers a different cooking experience, and understanding the trade-offs matters more than brand selection.
1. Cast iron grates deliver the best heat retention and the deepest sear marks. They require seasoning and oiling to prevent rust, but a well-maintained cast iron grate will outlast every other option. They’re heavier, more substantial, and they recover temperature quickly between burger flips.
2. Porcelain-coated cast iron grates combine cast iron heat retention with an easy-clean non-stick surface. The porcelain coating prevents rust on the rods and makes post-cook cleanup faster. The downside is chipping risk if you scrape aggressively with metal tools.
3. Stainless steel grates are the lowest-maintenance option. They resist rust without seasoning and they clean easily. The trade-off is lower thermal mass – stainless doesn’t hold heat the way cast iron does, so sear marks are slightly less aggressive.
For searing steak, chicken, and chops, cast iron or porcelain-coated cast iron is the right call. For weeknight cooking and low-maintenance ownership, stainless steel wins. The 8 grates in this guide span all three categories so you can pick based on your cooking style.
How to Measure Replacement Grill Grates for a Gas Grill
Before you order any replacement grate set, measure your firebox. The wrong size either won’t seat on the ledges or will rock around during cooking – both create safety hazards and poor cooking performance.
Remove the old grates and lay them flat on a patio or table.
Measure the width and depth of each panel with a tape measure – note the dimensions to the nearest 1/8 inch.
Measure the gap between the panels when they’re seated in the firebox. This is the total cooking surface width minus the width of one panel.
Measure the width of the firebox ledge where the grates rest. The replacement grates need at least 1/2 inch of ledge to seat safely.
Photograph the OEM part number stamped on the side or underside of the old grates. Cross-reference this number on the replacement listing before ordering.
If your old grates are too far gone to measure, find your grill’s model number (usually on a sticker inside the cabinet door or on the back panel) and search the manufacturer’s compatibility list. Weber Spirit 300 owners should specifically look for OEM part number 7638 or 7525.
Brand Compatibility: Which Grates Fit Weber, Char-Broil, Nexgrill?
Brand-specific fit is where most buyers slip up. “Universal” aftermarket grates often don’t seat correctly on specific models. Here’s how the 8 sets in this guide map to the most common gas grill brands.
Weber Spirit 300, Spirit II 300, Genesis 1000-3500: The Uniflasy 17.5 inch set (B07CZGSKK8) and QuliMetal 7638 set (B07KXG9QM6) are the two cleanest aftermarket fits. Both replace OEM Weber part 7638 and have thousands of confirming reviews.
Weber Genesis E-310, S-310, E-320, S-320: The Direct Store DC107 set (B01H69KY0I) is the strongest porcelain-coated match. Reviewers consistently report drop-in fit on these specific Genesis models.
Nexgrill 720-0830H, 720-0888, 720-0888N: Three sets work here – Uniflasy bare cast iron (B07FGV9GXG), Direct Store DC104 porcelain-coated (B01FU49H5Y), and Hisencn 304 stainless steel (B07X527T8L). Pick by material preference.
Char-Broil Commercial Tru-Infrared 3-burner: The Uniflasy 17 inch infrared set (B0B4JNFXRQ) replaces OEM part G466-0025-W1A directly. Standard Char-Broil Performance series owners should look elsewhere – the dimensions don’t carry over.
Char-Broil 463241113, 463449914: Both the Uniflasy bare cast iron set and the Direct Store DC104 porcelain-coated set fit these models. The Uniflasy 7,551-review option is the safer pick for high-volume cooks.
Dyna-Glo 2-burner DGF350CSP, DGF350SNP: The Hisencn 21 inch set (B09Z6Q5D6R) is purpose-built for this chassis. Other aftermarket options rarely fit correctly.
For shoppers shopping outside these specific models, always cross-reference your grill’s OEM part number against the listing. If the listing says “fits model XYZ” but doesn’t list your specific model, reach out to the seller before ordering.
Looking for a brand-new grill rather than just a grate swap? Our guide to the best gas grills for backyard cooking covers full-sized options worth comparing.
Seasoning, Cleaning, and Caring for Replacement Grill Grates
How you care for your new grates determines whether they last one season or ten. Cast iron and porcelain-coated cast iron both need a seasoning routine before the first cook. Stainless steel needs almost nothing beyond a rinse.
Seasoning new cast iron grates: Wash with warm water and a soft brush – no soap. Dry completely. Coat every surface with a thin layer of high-smoke-point oil (grapeseed, canola, or flaxseed). Heat the grill to 400 degrees F with the grates in place and let them run for 30 minutes. Let them cool in the grill. Repeat the oil-and-heat cycle two or three times before the first cook.
Seasoning porcelain-coated grates: No pre-seasoning needed. Just wash with warm water and a soft sponge, dry, and you’re ready to cook. The porcelain coating is the protective layer.
After every cook: While the grates are still warm, scrape them with a grill brush to remove stuck-on residue. Wipe down with a paper towel lightly oiled with cooking oil. This builds the patina on cast iron and prevents food from sticking on porcelain.
Deep cleaning: For heavy buildup on cast iron, scrub with coarse salt and a paper towel or half an onion. For porcelain-coated grates, soak in warm soapy water for 15 minutes, then scrub. Stainless steel grates can go in the dishwasher.
Winter storage: Cast iron grates should be oiled, dried completely, and stored indoors or under a waterproof grill cover. Porcelain-coated grates can stay on the grill under a cover. Stainless steel grates need no special winter care.
Planning a camping trip or tailgate? You’ll find portable options in our best portable camping grills guide.
Frequently Asked Questions
What size grill grates do I need for a gas grill?
Measure the width and depth of each existing panel, plus the gap between panels. Common gas grill replacement grates come in 17 x 26.5 inches, 17.5 x 23.8 inches, and 19.25 x 24.75 inches. Match your measurement to within 1/8 inch, and confirm the panel-to-panel gap matches your firebox ledge width.
Are stainless steel grill grates better than cast iron?
Neither is universally better – they serve different cooking styles. Cast iron holds more heat and sears deeper, but requires seasoning to prevent rust. Stainless steel needs no maintenance and cleans easily, but stores less heat. For high-heat searing, pick cast iron. For low-maintenance ownership, pick stainless.
Can you replace grill grates on a gas grill?
Yes – replacement grill grates drop onto the firebox ledges of any standard gas grill. Most swaps take under 15 minutes with no tools. The only requirement is matching the dimensions and the OEM part number stamped on the original grates. Aftermarket grates from QuliMetal, Uniflasy, Hisencn, and Direct Store cover most major brands.
How do I measure replacement grill grates?
Remove the old grates and lay them flat. Measure each panel’s width and depth to the nearest 1/8 inch. Measure the gap between panels when seated, and the width of the firebox ledges. Photograph the OEM part number stamped on the side or underside – cross-reference this against the replacement listing before ordering.
Are porcelain-coated cast iron grates good?
Yes – they combine cast iron heat retention with an easy-clean non-stick surface. The porcelain coating prevents rust on the rods and reduces post-cook cleanup time. The main caution is chipping risk if scraped aggressively with metal tools. With normal care, porcelain-coated grates last 5-10 years on a residential gas grill.
How long do replacement grill grates last?
With proper care, cast iron replacement grates last 10-15 years. Porcelain-coated cast iron lasts 5-10 years before the coating wears through. Stainless steel grates last 7-12 years depending on grade. The lifespan depends mainly on seasoning routine, cleaning aggressiveness, and winter storage – covered storage doubles the lifespan of any material.
Final Verdict: Which Replacement Grill Grate Should You Buy?
After testing all 8 sets, the Uniflasy 17.5 inch cast iron grates for Weber Spirit 300 remain our top pick for the best replacement grill grates for gas grills overall. The 7,551-review backing, drop-in fit, and genuine cast iron heat retention make it the safest aftermarket buy for Weber owners.
Nexgrill owners should look at the Uniflasy 17 inch bare cast iron set for the best heat retention or the Hisencn 304 stainless steel set for the lowest-maintenance option. Char-Broil Commercial Tru-Infrared owners need the dedicated infrared set to use the emitter plate properly. Dyna-Glo 2-burner owners finally have a clean-fit aftermarket option in the Hisencn 21 inch set.
If you’re shopping for a brand-new grill instead of just a grate swap, our guide to the best built-in gas grills covers premium full-cooker options. Otherwise, any of the 8 grates here will restore proper searing, heat retention, and rust-free cooking to your existing gas grill for years to come.