Comparison: Best Lawn Mower Blades 21 Inch (Updated | Oct 14th)
Choosing the right 21-inch lawn mower blade is essential for maintaining a healthy, evenly cut lawn. Blades vary in material, design, and purpose, with options tailored for different grass types, cutting heights, and durability needs. This comparison explores key features, performance, and longevity of top blades to help you make an informed decision. Whether prioritizing sharpness retention, rust resistance, or mulching efficiency, understanding these factors ensures optimal results for your landscaping routine. Avoid generic selections—evaluate how each blade aligns with your mower’s requirements and turf conditions.
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Editor’s Choice
Best for a specific purpose
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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 best budget:
MaxPower 331737B Mulching Blade for Many 21 in. Cut Craftsman -
Best for wide compatibility:
UDC Parts 942-0741A Mower Blades 21 Inch for Troy Bilt TB130 TB240 TB160 TB115 TB230 TB110 Craftsman M230 M250 MTD Cub Cadet Yard Machines 742-0741 742-0741A 942-0741 CMXGZAM100067 / Mulching / 2 Pack -
Best for brand-specific fit:
Greenworks Replacement Lawn Mower Blade (21" Mowers : MO40L4413 -
Best for budget mulching:
Maxpower 331528B Mulching Blade for 21 Inch Cut MTD/Cub Cadet/Troy-Bilt Replaces 742-04100 -
Best for premium performance:
EGO POWER+ 21" Blade for Electric Lawn Mowers LM2101/LM2100/LM2102SP/LM2100SP/LM2142SP – AB2100 -
Best for commercial grade:
MaxPower 331387XB Commercial Mulching Blade for 21 in. Cut Toro -
Best for multi-brand fit:
Grasscool 21 inch Mower Mulching Blade for Craftsman Husqvarna Poulan 7021P 406712 532406712 165833 175064 189028 532189028 21''Deck Push Lawn Mower -
Best for 2-pack value:
Wadoy 21" Lawn Mower Blade 2 Pack Compatible with Greenworks 21 Inch Mower Blade -
Best for cost-effective fit:
SWAPARTS Lawn Mower Blade for Greenworks 21 inch Mower C3208101 MO40L4413
Product Comparison: Best Lawn Mower Blades 21 Inch
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
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
UDC Parts 942-0741A Mower Blades 21 Inch for Troy Bilt TB130 TB240 TB160 TB115 TB230 TB110 Craftsman M230 M250 MTD Cub Cadet Yard Machines 742-0741 742-0741A 942-0741 CMXGZAM100067 / Mulching / 2 Pack
UDC Parts
- Dimensions: Length 21", Width 2-1/4", Thickness 0.126", Center Hole Bow-Tie, Side Hole 5/16", Center to Center Outside Hole 2-1/2", Air Lift 1-7/64", Cutting Edge Length 6-7/64", Compatible Deck Size 21". The length of the blade is measured diagonally from one end to the other
- Replaces OEM Part: MTD, Troy Bilt 942-0741A, 742-0741, 742-0741A, 742-04100, 942-0741, 942-04276S, 942-04276, 742-04276S, 742-04276, 01002810, 490-100-C089, 490-100-M084, 942-0641, CC-742-0741, OEM-742-0741, DXGX100084, Craftsman CMXGZAM100067
- When installing a new Blade, or Cutter, you may notice that the cutting edge has been pre-sharpened but then painted over. This paint is a safety measure to protect the installer from injury during installation. This paint will come off quickly during initial operation and should not be otherwise removed
- 942-0741A Troy Bilt 21 Inch Mower Blades Compatible with TB100, TB105, TB105B, TB110, TB115, TB120, TB120B, TB125, TB125B, TB130, TB130XP, TB140, TB160, TB160XP, TB200, TB210, TB210B, TB220, TB220BXP, TB230, TB230XP, TB230BXP, TB240, TB240KXP, TB270ES, TB270XP, TB280ES, TB290ES, TB320, TB320XP, TB330, TB330XP, TB360, TB360XP, TB360ES, TB370, TB370XP. Please confirm the complete model number to ensure a proper fit. For a more detailed list of compatible models, check the description below
- 942-0741A Troy Bilt 21 Inch Mower Blades Compatible with TB380, TB380ES, TB380XP, TB400XP, TB430XP, TB450XP, TB490XP, TB449E, 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, 12ALC35S766, 12ALC35S711, 12ALC35S066, 12AKD3AQ766, 12AKC35U711, 12AI869G211, 12AI869F066, 12AI869F011, 12AI832Q766, 12AI832Q711, 11A-54K3066, 11A-549C766, 11A-546N711, 11A-426A066, 12A-446A066, 11A-426A011, 11A-426A711, 11A-426C211, 11A-426C266
- 942-0741A 21 Inch Lawn Mower Blades Compatible with Craftsman 247.887760 (12AE999P099), 247.887761 (12AE999P099), 247.388140 (11A-418C099), M140 (CMXGMAM1125500) (11A-B2AQ793), M230 (CMXGMAM1125502) (12AVB2R3793), M250 (CMXGMAM1125503) (12AVB2AQ793), M270 (CMXGMAM1125504) (12AGA2MP793); MTD 214 IP, 214 KW, 378Q, 422Q, 42K, 436Q, 466Q, 559Q, 566Q, 567A, 568Q, 569Q, 588Q, 589B, 58K, 839Q, 980K, 986Q, 989Q, 997A, 998Q, C31E, C3KQ, D31H, D37K, D3K9, D3KB, D3KH, V550, V55D, V560, VB20
- 942-0741A 21 Inch Lawn Mower Blades Compatible with Cub Cadet CC469, CC989, CC997ES, PR521, S621, S621SS, SC621, SC621E, SR621, SRC621, SRE621, CC439, CC949, CC94M, CC98, CC98M, CC98H, CC98K, CC99M, CC46M, CC46MZ, CC46ES, CC999ES, SC100, SC100H, SC100HW, SC700, SC700H, SC300, SC300HW, SC300B, SC300E, SC300K, SC500, SC500HW, SC500K, SC500Z, SC500EZ, SC500EQ, 5521, RB600, SCP100
- 942-0741A 21 Inch Lawn Mower Blades Compatible with White Outdoor LC-436, LC-149, HW-615, HW-656, HW-456, W-56 MC, LC-210, LC-215, LC-215E, LC-210SS, W-995, W-54K, W-54MB, W-54MC, W-83MC, 11A-435D790, 11A-439S290, 12A-465E790, 12A-469S290, 12A-565E790, 12AD565E790, 12AV569S290, 12AV839S290, 12AF569S790; Columbia 11A-A44E897, 12A-976B897, 12A-979W897, 12AE979V897, 12AV569Q897, 12AVB29Q897, 11A-549Q597, 12A-978Q597, 12A-998Q597, 12AJ836L597, 12AV569Q597, 11A-549Q897, 12A-996B597, 12A-996B897
Brand-specific 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
Budget mulching
Maxpower 331528B Mulching Blade for 21 Inch Cut MTD/Cub Cadet/Troy-Bilt Replaces 742-04100, 742-0741, 742-0741A, 942-0741, 942-0741A, CMXGZAM100067
Maxpower
- Includes 1 mulching blade for many 21 in. cut MTD, Cub Cadet, Troy-Bilt, and Craftsman mowers
- Replaces OEM #'s 742-0741, 742-0741A, 942-0741, 942-0741A
- Also fits Craftsman CMXGZAM100067
- Measures: 21 in. L and 2-1/4 in. W
- Bow tie center hole pattern
Premium performance
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
Commercial grade
MaxPower 331387XB Commercial Mulching Blade for 21 in. Cut Toro, Exmark, Lawn Boy Mowers Replaces OEM #'s 108-0954-03, 116-4500, 133-8182-03
MAXPOWER
- Replaces OEM #: 108-0954-03, 116-4500, 1164500S, 1350413S
- Fits 21" cut Toro, Exmark and lawn Boy mowers
- Size: 20-27/32" x 2-1/4" with a 7/16" center hole
- Package contains 1 blade and Made in the USA
- To ensure a proper fit, please check your owner's manual to verify the proper replacement blade number and be sure that it matches one of the OEM numbers listed in our description. We make our best effort to ensure all replacement OEM numbers are detailed in our product description.
Multi-brand fit
Grasscool 21 inch Mower Mulching Blade for Craftsman Husqvarna Poulan 7021P 406712 532406712 165833 175064 189028 532189028 21''Deck Push Lawn Mower
Grasscool
- 21 inch Mower Mulching Blade Replace number 165833, 175064, 189028, 406712, 176135, 159267, 008020, 175052, 406706, 531300765, 532 15 92-67, 532 17 50-52, 532159267, 532165833, 532175064, 532176135, 532189028, 532406712, 539111878
- 21 inch Mower Mulching Blade Compatible with Craftsman 21'' Deck Push Lawn Mower Self Propelled.The mower blade comes with round center hole
- 21 inch Mower Mulching Blade Compatible with Husqvarna 21''Deck Push Lawn Mower Self Propelled.The mower blade comes with round center holes
- 21 inch Mower Mulching Blade Compatible with Poulan 21''Deck Push Lawn Mower Self Propelled.The mower blade comes with round center holes
- Commercial Mulching Blade Specification:blade length 21"(534mm),width 2-1/4"(57mm),thickness 5/32"(4mm),air lift 1-1/8"(28mm),center hole shape circle
- Mower blade type:mulching blade,Compatible deck size:21"
- Notice:you do not need to remove the paint on the blade before using it.The paint is probably there to protect your hand when installing it and prevent blade rust.It's gone after a few minutes of moving
- Notice:Before purchasing, please don't just focus on compatible model number. Make sure that the replacement number, model, and size match yours before selecting our blades
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.
Cost-effective fit
SWAPARTS Lawn Mower Blade for Greenworks 21 inch Mower C3208101 MO40L4413, MO40L03, MO48L4422
SWAPARTS
- PLEASE COMPARE YOUR OLD LAWN MOWER BLADE WITH OUR PICTURES TO MAKE SURE FITMENT！
- LENGTH:20.08"， WIDTH:1.97"，THICKNESS:0.67"
- Lawn Mower Blade for Greenworks C3208101 MO40L4413, MO40L03, MO48L4422
- The construction of one-piece steel will make sure that the blades are sturdy ,which are not easy to wear and tear,cut the grass more efficiency, keep the lawn clean and tidy
- Package Included:1 * Lawn Mower Blade
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
Which blade is best for mulching in 21-inch mowers?
MaxPower 331737B and MaxPower 331387XB are designed for mulching with 21-inch mowers.
Are there blades compatible with multiple brands?
MaxPower 331737B and Grasscool blades fit multiple brands like Craftsman, Husqvarna, and Poulan.
Which blade is suited for electric mowers?
EGO POWER+ 21"Blade is designed for electric models like LM2101/LM2100.
What blade fits Greenworks 21-inch mowers?
Greenworks Replacement Blade and Wadoy 21"Blade are compatible with Greenworks models.
Is there a commercial-grade option?
MaxPower 331387XB is a commercial mulching blade for brands like Toro and Exmark.
Which blade is OEM-equivalent?
MTD Genuine Parts blade is an OEM replacement for 21-inch MTD mowers.
Are there blades for Troy-Bilt models?
UDC Parts 942-0741A fits Troy-Bilt TB130, TB240, and similar models.
