Best Lawn Mower Blades Under $40 (2026)
A practical guide to the best lawn mower blades under 40, comparing four replacement blades from listing facts.
On this page
Top picks at a glance
As an Amazon Associate I earn from qualifying purchases.
- 1
Best OverallUDC Parts 942-043089.5/10View on Amazon - 2
Best OEM 21-InchGreenworks 2992102VT9.5/10View on Amazon - 3
Best USA-MadeMaxpower 561556B9.5/10View on Amazon - 4
Best EGO FitEGO Power+ AB21009.4/10View on Amazon - 5
54 inch Mower High Lift Blades for Husqvarna Z254F 532187256View on Amazon - 6
Grasscool ZT1 54 High Lift Blades for Cub Cadet 54 inch MowerView on Amazon - 7
532138971 Mower Blades for Craftsman/HU/Pou LAN 42" LawnView on Amazon - 8
3 Pack 532180054 Lawn Mower Blades with 532193003 BoltsView on Amazon - 9
Hipa 532405380 46 Inch Mower Blades Replace for 405380View on Amazon - 10
532187256 54 Inch Lawn Mower Mulching BladesView on Amazon
A dull blade does not cut grass so much as tear it, and torn grass browns at the tips and struggles to recover. When the edge will not hold a sharpening anymore, a replacement blade is the fix, and best lawn mower blades under 40 is the price band where replacement blades live. The four below are compared from what each listing states: two 42-inch replacement sets and two 21-inch OEM blades, with dimensions, materials and warranty in writing.
AcreMowerLab earns a commission when you shop through links here. It never changes your price. Affiliate disclosure.
Quick picks
- Best Overall UDC Parts 942-04308: 2-pack with full stated dimensions and 1-year product support Check price on Amazon
- Best OEM 21-Inch Greenworks 2992102VT: Stainless steel with a stated 3-year warranty Check price on Amazon
- Best USA-Made Maxpower 561556B: High carbon steel 2-pack for 42-inch decks Check price on Amazon
- Best EGO Fit EGO Power+ AB2100: 3-in-1 factory-sharpened blade for the LM2100 family Check price on Amazon
Our acreage picks
UDC Parts 942-04308 42-Inch Replacement Blades, 2-Pack
A 2-pack of 42-inch replacement blades with full stated dimensions, pre-sharpened high-strength steel and a 1-year product support term, fitting a long list of Cub Cadet, Craftsman, Troy-Bilt and MTD models.
Read the full review
The listing's title states a 2-pack while its spec table lists Number of Items as 1; trust the title and bullets, which describe a 2-pack set.
Fit is unusually well documented: blade length is measured diagonally end to end, and the listing names the deck, hole pattern and dozens of compatible models, with the warning to confirm the complete model number.
Pros
- States full dimensions: 21-1/7 in length, 2-1/2 in width, 6 point star center hole, 3/8 in side hole, 63/64 in air lift and 4-1/4 in cutting edge.
- 2-pack for stated 42-inch decks across Cub Cadet, Craftsman, Troy-Bilt and MTD models.
- Pre-sharpened with a safety coating, and the listing says the edge can be safely resharpened.
- 1-year product support for manufacturing defects and product-related issues.
Cons
- The listing states no blade weight or thickness.
- Compatibility is long; the listing says to confirm the complete model number for fit.
- No safety features are stated.
- The 1-year term is described as product support rather than a stated parts warranty.
Greenworks 2992102VT 21-Inch Replacement Mower Blade
A genuine Greenworks 21-inch replacement blade in stainless steel with stated dimensions and a 3 year manufacturer warranty, fitting stated 80V, 60V, 40V and 2 x 24V mower models.
Read the full review
The listing is straightforward with no internal contradictions: title, bullets and spec table agree on a 21-inch stainless steel blade.
Its strength is documentation: full dimensions, a long stated model list and the only multi-year warranty here, offset by Greenworks-only fit.
Pros
- Genuine Greenworks part for stated 21-inch mowers across 80V, 60V, 40V and 2 x 24V lines.
- Stainless steel with stated dimensions: 20.08 by 1.97 by 0.67 in.
- 3 year manufacturer warranty, the longest term stated among the four.
- Clear model-number compatibility list in the listing.
Cons
- Fits only the stated Greenworks 21-inch mower models.
- The listing states no blade weight.
- The listing says to compare the mounting pattern on the mower to the imagery.
- Single blade, not a set.
Maxpower 561556B 42-Inch Blade Set, 2-Pack
A USA-made 2-pack of 42-inch replacement blades in high carbon steel with stated dimensions and weight, replacing several OEM numbers with a limited 30 day warranty.
Read the full review
The spec table lists Number of Items as 1 while the bullets and unit count state 2 blades; trust the bullets, which say the set includes 2 blades.
A clean domestic option for 42-inch decks, with the trade-off being the short 30 day warranty term against the UDC's 1-year product support.
Pros
- USA made, stated in the title.
- High carbon steel with stated dimensions: 21-3/16 in length, 2-1/4 in width, 0.75 in thickness, 3.4 lb.
- 2 blades for many stated 42-inch MTD, Cub Cadet and Troy-Bilt mowers.
- Replaces stated OEM numbers: 942-04312, 942-04308, 742-04308, 742-04312 and 119-8456.
Cons
- The limited 30 day warranty is the shortest stated term here.
- No cutting-edge length is stated.
- No air-lift figure is stated.
- Fits 42-inch decks only.
EGO Power+ AB2100 21-Inch 3-in-1 Mower Blade
A genuine EGO 21-inch 3-in-1 blade for mulching, bagging and side discharging, factory sharpened at 1.1 lb for the stated LM2100 family mowers.
Read the full review
A narrow but honest listing: it covers one blade type for one mower family with no contradictions between title, bullets and spec table.
The 3-in-1 function is its differentiator; the lack of any stated warranty term and EGO-only fit keep it last here.
Pros
- 3-in-1 blade for mulching, bagging and side discharging.
- Factory sharpened steel blade for the stated EGO LM2100 family models.
- Genuine EGO part for assured compatibility with the listed mowers.
- 1.1 lb stated weight.
Cons
- No warranty term is stated.
- Fits only the stated EGO 21-inch models.
- The listing states no dimensions beyond the 21-inch cutting width.
- Single blade, not a set.
Other machines to compare
54 inch Mower High Lift Blades for Husqvarna Z254F 532187256Check price on Amazon
Grasscool ZT1 54 High Lift Blades for Cub Cadet 54 inch MowerCheck price on Amazon
532138971 Mower Blades for Craftsman/HU/Pou LAN 42" LawnCheck price on Amazon
3 Pack 532180054 Lawn Mower Blades with 532193003 BoltsCheck price on Amazon
Hipa 532405380 46 Inch Mower Blades Replace for 405380Check price on Amazon
532187256 54 Inch Lawn Mower Mulching BladesCheck price on Amazon
Side-by-side specs
| Model | Acre Score | Deck or mower | Blade length | Center hole | Warranty |
|---|---|---|---|---|---|
| UDC Parts 942-04308 | 9.5/10 | 42-inch deck | 21-1/7 in | 6 point star | 1-year product support |
| Greenworks 2992102VT | 9.5/10 | Greenworks 21-inch mowers | 21 in | Not stated | 3 year |
| Maxpower 561556B | 9.5/10 | 42-inch deck | 21-3/16 in | 6 point star | Limited 30 day |
| EGO Power+ AB2100 | 9.4/10 | EGO 21-inch mowers | 21 in | Not stated | Not stated |
Specifications are manufacturer rated as listed, collected 22 October 2026.
Acreage and terrain fit
UDC Parts 942-04308
Greenworks 2992102VT
Maxpower 561556B
EGO Power+ AB2100
Buying guide: best lawn mower blades under 40
42-inch replacement sets: UDC vs Maxpower
Both sets state 2 blades for 42-inch decks with a 6 point star center hole. The UDC states 21-1/7 in length, 2-1/2 in width, a 3/8 in side hole, 63/64 in air lift and a 4-1/4 in cutting edge, with premium high-strength steel and a 1-year product support term. The Maxpower states 21-3/16 in length, 2-1/4 in width, 0.75 in thickness, 3.4 lb and high carbon steel, USA made, with a limited 30 day warranty. Confirm the complete model number before ordering; the UDC listing says parts can differ between configurations of the same mower model.
21-inch OEM blades: EGO vs Greenworks
The EGO AB2100 is a 3-in-1 blade for mulching, bagging and side discharging, factory sharpened, 1.1 lb, for the stated EGO LM2100 family models, with no warranty term stated. The Greenworks 2992102VT is stainless steel, 20.08 by 1.97 by 0.67 in, for the stated Greenworks 21-inch mowers across 80V, 60V, 40V and 2 x 24V lines, with a 3 year manufacturer warranty. See the best lawn mower blade for bagging guide for bagging-specific picks.
Center hole and fit
Both 42-inch listings state a 6 point star center hole; the UDC adds a 3/8 in side hole. Match the hole pattern, the deck width and the OEM number to the listing. The Greenworks listing says to compare the mounting pattern on the mower to the pattern in the imagery.
Warranty terms in writing
The Greenworks states a 3 year manufacturer warranty, the UDC states 1-year product support for manufacturing defects and product-related issues, and the Maxpower states a limited 30 day warranty. The EGO listing states no warranty term. For keeping edges true between replacements, a blade sharpener and the best mower blade balancer guide help.
Read the manual, keep children and pets out of the yard while you work, wear eye and hearing protection and sturdy footwear, and never exceed the slope rating of your machine. Refuel only with the engine off and cool. See CPSC lawn mower safety. Read our Safety Disclaimer.
Matching It to Your Property
- The 42-inch sets (UDC, Maxpower) fit stated 42-inch decks on riders and zero-turns; the 21-inch blades (EGO, Greenworks) fit the stated walk-behind electric mower models.
- The UDC listing says to confirm the complete model number, since parts can differ between configurations of the same mower model.
- The Greenworks listing says to compare the mounting pattern on the mower to the pattern in the imagery before buying.
- The UDC listing notes a safety coating that wears off during initial use, and a cutting edge that can be safely resharpened when needed.
The Acre Score explained
The Acre Score weighs five factors: performance (stated dimensions, material and cut quality), build quality (stated construction and included parts), value (stated specs), safety (stated guards, controls or certifications) and warranty (stated term and coverage). A factor the listing does not state scores zero. None of these blade listings states safety features, so safety scores zero across the four.
| Product | Acre Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| UDC Parts 942-04308 | 9.5 | 29 | 21 | 21 | 0 | 3 |
| Greenworks 2992102VT | 9.5 | 28 | 20 | 19 | 0 | 4 |
| Maxpower 561556B | 9.5 | 28 | 20 | 20 | 0 | 2 |
| EGO Power+ AB2100 | 9.4 | 27 | 19 | 19 | 0 | 0 |
Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score.
FAQ: mowing large lots
How do I know which replacement blade fits my mower?
Match the deck width, the center hole pattern and the OEM or part number to the listing. The UDC listing says to confirm the complete model number, since parts can differ between configurations of the same mower model.
What is a 6 point star center hole?
It is the mounting pattern both 42-inch listings state: a six-pointed star opening at the blade’s center that seats on the spindle. Match it exactly; the UDC also states a 3/8 in side hole.
What is the difference between the two 42-inch sets?
Dimensions, material and warranty. The UDC states 21-1/7 in length with a 4-1/4 in cutting edge, premium high-strength steel and 1-year product support. The Maxpower states 21-3/16 in length, 0.75 in thickness, 3.4 lb, high carbon steel, USA made, with a limited 30 day warranty.
Which blade has the longest stated warranty?
The Greenworks, with a 3 year manufacturer warranty. The UDC states 1-year product support, the Maxpower states a limited 30 day warranty, and the EGO listing states no warranty term.
Can these blades be resharpened?
Only the UDC listing says so: its cutting edge can be safely resharpened to extend blade life. The other three listings do not state resharpening.
