Comparison: Best 21 Replacement Lawn Mower Blade (Updated | Oct 14th)
When it comes to maintaining a healthy, well-groomed lawn, the right replacement blade is essential. With countless options on the market, finding the **best 21-inch replacement lawn mower blade** can feel overwhelming. This comparison guide highlights top-performing blades, evaluating factors like durability, cutting precision, and compatibility with popular mower models. Whether you prioritize sharpness, longevity, or budget-friendly performance, this overview aims to help you make an informed choice for your lawn care needs. Stay tuned for unbiased insights to keep your equipment—and your grass—in optimal condition.
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Editor’s Choice
Best for a specific purpose
-
Best for best overall:
MTD Genuine Parts (490-100-M067 Mulching Blades-for 21-Inch Lawn Mowers (1995 and After) Fits Various Troy-Bilt -
Best for greenworks fit:
Greenworks Replacement Lawn Mower Blade (21" Mowers : MO40L4413 -
Best for brand specific:
EGO POWER+ 21" Blade for Electric Lawn Mowers LM2101/LM2100/LM2102SP/LM2100SP/LM2142SP – AB2100 -
Best for best budget:
MaxPower 331737B Mulching Blade for Many 21 in. Cut Craftsman -
Best for wide compatibility:
MTD Genuine Parts (942-0741A) Replacement Part Mulching Blade-21-Inch Cutting Decks Fits Various MTD -
Best for durable steel:
Greenworks Replacement Lawn Mower Blade (Fits : 21' Mower / 25112 / 25022) -
Best for premium build:
ZALANA 21" Deck Replacement Lawn Mower Mulching Blades for 942-0741A 742-0741 742-0741A 942-0741 – Compatible with Troy Bilt TB110 TB130 TB210 TB230 Craftsman 247 Series Push Mower – 2 Pack -
Best for 2-pack value:
Wadoy 21" Lawn Mower Blade 2 Pack Compatible with Greenworks 21 Inch Mower Blade -
Best for high-end performance:
EGO POWER+ 21" Mulching Blades for Electric Lawn Mowers LM2133/LM2130/LM2135SP/LM2130SP/LM2156SP/LM2150SP -
Best for multi-functional:
Arnold 490-100-0083 21-Inch/ 22-Inch Walk-Behind Lawn Mower Replacement Blade
Product Comparison: Best 21 Replacement Lawn Mower Blade
Best overall
MTD Genuine Parts (490-100-M067 Mulching Blades-for 21-Inch Lawn Mowers (1995 and After) Fits Various Troy-Bilt, MTD, Yard Machines, and Other Top Models, Natural
MTD Genuine Parts
- 21 INCH MULCHING BLADES: Engineered to perfectly fit 21-inch lawn mowers manufactured from 1995 on, ensuring precise cutting performance by effectively mulching grass clippings into fine particles
- COMPATIBILITY: Crafted with durability in mind, they are compatible with a wide range of top mower models including Troy-Bilt, MTD, Yard Machines, Huskee and Bolens, and more
- 3-IN-1 BLADE: This versatile blade excels in mulching, bagging, and side discharge functionalities, providing complete flexibility for managing grass clippings according to your lawn care needs
- STAR CENTER HOLE: Designed with a star-shaped center hole ensuring a secure and stable fit on compatible mower shafts, facilitating easier installation and removal when maintaining or replacing blades
- REPLACEMENTS: These lawn mower blades can be used as a direct replacement for: 942-0741, 942-0741A, 742-0741, and 742-0741A; an ideal substitute without compromising fit or function
Greenworks fit
Greenworks Replacement Lawn Mower Blade (21" Mowers : MO40L4413, MO40L03, MO48L4422)
Greenworks
- [Compatible Greenworks 80V Mowers] : 2550702, 2550402, 2501202, 2500402, 1356602, 1356702, 1356402, 1356502, 2533902, 2541302, 2533402, 2533602, 2502202, 2506902, 2515902, 2534102, 2502402NV, 2533302, 2541202
- [Compatible Greenworks 60V Mowers] : 2531702, 2531602, 2545102, 2531702T, 2531602T, 2535102T, 2504902T, 2509802
- [Compatible Greenworks 40V Mowers] : 2515502, 1306402AZ, 2527302AZ, 2525202, 2516402, 1348402-HB, 2525102AZ, 2506502AZ, 2508502, 2506602, 2513502
- [Compatible Greenworks 2 x 24V Mowers] : 2533202, 2532702, 2532502, 2532902
- [Important] – Compare the mounting pattern on your mower to ensure it matches the pattern in the imagery
Brand specific
EGO POWER+ 21" Blade for Electric Lawn Mowers LM2101/LM2100/LM2102SP/LM2100SP/LM2142SP – AB2100
EGO Power+
- 3-In-1 mower blade for mulching, bagging and side discharging
- Designed specifically for EGO power plus mower models LM2100 and LM2100SP
- Factory sharpened steel blade for excellent cutting performance
- Delivers a clean cut to promote lawn health
- Genuine EGO parts ensure compatibility and quality
Best budget
MaxPower 331737B Mulching Blade for Many 21 in. Cut Craftsman, Husqvarna, Poulan Mowers, Replaces OEM no. 165833, 175052, 406712, 532175064, 594893001, 175064
Maxpower
- Replaces OEM numbers 165833, 175064, 189028, 406712, 176135, 159267, 008020, 175052, 406706, 406712X431, 531300765, 532 15 92-67, 532 17 50-52, 532159267, 532165833, 532175064, 532176135, 532189028, 532406712, 539111878 and PP23020
- Also fits Craftsman CMXGZAM100129
- Includes 1 mulching blade for many 21-in cut Craftsman, Husqvarna, and Poulan mowers
- 5/8-in center hole diameter
- Manufactured to meet or exceed all OEM specifications
- Check your owner's manual to verify the OEM number of the blade being replaced matches one of the OEM numbers provided for this item
- Proudly made in the USA
Wide compatibility
MTD Genuine Parts (942-0741A) Replacement Part Mulching Blade-21-Inch Cutting Decks Fits Various MTD, CRAFTSMAN, Troy-Bilt, and Other Top Models
MTD Genuine Parts
- 21 INCH MULCHING BLADES: Engineered to perfectly fit 21-inch lawn mowers manufactured from 2012 on, ensuring precise cutting performance by effectively mulching grass clippings into fine particles
- COMPATIBILITY: Compatible with Yard Man, Yard Machines, Troy-Bilt, Huskee, Bolens and Craftsman units built in 1995 and after; they will also fit select Murray and Snapper units built in 2012 an after
- FITS WALK-BEHIND MOWER MODELS: Including, but not limited to: 11A-B0BL765, 11A-B0S5700, 11A-B0BL700, 11A-A2S5700, 12A-A0BE700, 11A-A00X700, 12A-A0M5700
- REPLACEMENTS: These lawn mower blades can be used as a direct replacement for Cub Cadet models including, but not limited to: CC469, CC989, CC997ES, PR521, S621, S621SS, SC621, SC621E, SR621, SRC621
- REFERENCE OWNERS MANUAL: To ensure a proper fit for your mower, reference your owner’s manual, model numbers are located on the mower deck housing by the handlebars
Durable steel
Greenworks Replacement Lawn Mower Blade (Fits : 21' Mower / 25112 / 25022)
Greenworks
- Compatibility: These lawn mower blades are exclusively designed to fit Greenworks 20-inch and 21-inch corded mowers, specifically models 25022 and 25112.
- Accurate Size: The actual length of each blade is precisely 19.69 inches, ensuring a perfect fit and optimal performance for the compatible mower models.
- Material Quality: Each blade is forged from a single piece of steel, offering excellent durability and a longer lifespan compared to multi-component blades.
- Durability: The one-piece steel construction ensures that the blades are exceptionally durable and resistant to wear and tear, making them a reliable choice for regular lawn maintenance.
- Efficient Cutting: These blades are designed for efficient cutting, providing a clean and even cut across the lawn, enhancing the mower's overall performance and efficiency.
Premium build
ZALANA 21" Deck Replacement Lawn Mower Mulching Blades for 942-0741A 742-0741 742-0741A 942-0741 – Compatible with Troy Bilt TB110 TB130 TB210 TB230 Craftsman 247 Series Push Mower – 2 Pack
ZALANA
- Blade Dimensions —— Blade Length: 21 inches, Width: 2-1/4 inches, Thickness: 0.126 inches, Center Hole: Bow-Tie. Package Includes: 2 x 942-0741A Blades
- Replace Part Numbers —— The mulching blades replaces Cub Cade t/MTD/Troy Bilt/ Craftsman 942-0741, 942-0741A, 742-0741, 742-0741A, 742-04100, 942-04276, 942-04276S, 742-04276, 742-04276S, CC-742-0741, 490-100-C089, CMXGZAM100067
- Compatibility —— Compatible with Troy-Bilt: Tru-Cut 100, Tru-Cut 110, Tuff-Cut 200, Tuff-Cut 210, Tuff-Cut 220, Tuff-Cut 230, Pro-Cut 300, Pro-Cut 310, Pro-Cut 320, TB105, TB110, TB115, TB120, TB125, TB130, TB130 XP, TB140, TB160, TB160 XP, TB200, TB210, TB220, TB230, TB240, TB270 ES, TB270 XP, TB280 ES, TB290 ES, TB320, TB330, TB360, TB360 ES, TB370, TB370 XP, TB380 XP, TB380 ES, TB400 XP, TB430 XP, TB449E, TB450 XP, TB490 XP;
- Compatibility —— Compatible with Craftsman: M100, M105, M110, M115, M140, M210, M230, M250, M260, M270, M310, M320 21 Inch Lawn Mower; Cub Cade t CC439, CC46ES, CC46M, CC46MZ, CC469, CC94M, CC949, CC98, CC98H, CC98K, CC98M, CC989, CC997ES, CC99M, CC999ES, SC100, SC100 H, SC100 HW, SC300, SC300 E, SC300 HW, SC500 EQ, SC500 EZ, SC500 HW, SC500 Z, SC700, SC700 H, S621, S621SS, SC621, SC621E, SR621, SRC621, SRE621, 5521, 214 IP, 214 KW, PR521, PR521;
- Compatibility —— Compatible with White Outdoor: LC-149, LC-210, LC-210SS, LC-215, LC-215E LC-436, HW-456, HW-615, HW-656, W-54K, W-54MB, W-54MC, W-56MC, W-83MC, W-995
- Premium Quality —— The lawn mower blades are made of high quality steel, heat-treated for strength and resistance, which extended longevity of the blade. The sharp blade allows you to cut effortlessly and consistently.
2-pack value
Wadoy 21" Lawn Mower Blade 2 Pack Compatible with Greenworks 21 Inch Mower Blade,Replacement Part for MO40L03,MO48L4422,MO40L4413,C3208101
Wadoy
- 【Lawn Mower Blade】: This mower blade compatible with Greenworks 21inch Mower MO40L4413, MO40L03, MO48L4422.
- 【Superior Cutting Efficiency】: Engineered for a clean, even cut, ensuring a lush, green lawn with every mow.
- 【Durable Construction】: Made from high-carbon steel, this blade offers exceptional strength and longevity, resisting wear and tear even under tough mowing conditions.
- 【Easy Installation】: With a user-friendly design, this blade can be easily installed in minutes, getting you back to mowing without hassle.
- 【Corrosion Resistance】: Coated for protection against rust and corrosion, it delivers reliable performance season after season.
High-end performance
EGO POWER+ 21" Mulching Blades for Electric Lawn Mowers LM2133/LM2130/LM2135SP/LM2130SP/LM2156SP/LM2150SP, 2-Pack – AB2101D
EGO Power+
- Compatible with EGO POWER+ 56-Volt Lithium-Ion Cordless Lawn Mowers LM2156SP, LM2150SP, LM2135SP, LM2130SP, LM2133. LM2130
- Heavy duty mulching and bagging blade
- Interchangeable lower blade on the Select Cut Multi-Blade System
- All steel blade for excellent cutting performance
- For use with EGO POWER+ 56-Volt Select Cut Mowers: LM2130, LM2133, LM2130P, LM2135SP, LM2150SP, and LM2156SP models
- Delivers a clean cut to promote lawn health
- Genuine EGO parts ensure compatibility, quality and performance
- Nuts and bolts not included
Multi-functional
Arnold 490-100-0083 21-Inch/ 22-Inch Walk-Behind Lawn Mower Replacement Blade
Arnold
- COMPATIBILITY: For MOST (but not all) Troy-Bilt, Bolens, AYP, Craftsman, Honda, Huskee, Husqvarna, Lawn-Boy, Murray, Poulan, Snapper, Toro, Yard Machines, Yard-Man 21 in., 22 in. and 23 in. walk-behind mowers.
- INCLUDED: Contents include one blade with sizers to fit 3/8 in., 7/16 in. and 5/8 in. universal center hole patterns and dethatching line.
- EFFECTIVE CUT: Sharp-edged blades cut grass cleanly and make their way through grass more efficiently, reducing overall mowing time and effort.
- MULTIFUNCTIONAL: Blade dethatches, rakes, mulches, scalps, bags and cuts lawns with simple adjustments to the nylon lines.
- IMPORTANT: For detailed installation instructions, please refer to your instruction manual.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
Buying Guide
FAQs
What is the best budget option?
Wadoy 21"Lawn Mower Blade 2 Pack offers a cost-effective solution.
Which blades are compatible with EGO POWER+ mowers?
EGO POWER+ 21"Blade (B01N5V1NQK) and EGO POWER+ 21"Mulching Blades (B088GPRT8J) are designed for EGO models.
Are there universal mulching blades for 21"mowers?
MaxPower 331737B and ZALANA 21"Deck Blades are compatible with multiple brands.
Which blades fit Greenworks 21"mowers?
Greenworks Replacement Blades (B0B78JZGVS, B00PBYZE6K) and Wadoy 21"Blades (B0DJR4KFZ4) are compatible.
What MTD Genuine Parts blades are available?
MTD Genuine Parts (B079LF6CF6, B00Y0OF2W8) are authentic replacements for 21"mowers.
Which blade is designed for older Craftsman models?
Arnold 490-100-0083 fits 21-22"walk-behind Craftsman mowers.
