Top 10 Best 42 inch mower blades in 2026

Last Updated - 6/21/2026

🏆Best Choice

UDC Parts

UDC Parts GY20850 Mower Blades for John Deere 42 Inch D105 D130 S100 S110 S240 X300 E100 E110 LA135 Replaces OEM no. AM141033 GX22151 AM131033 AM137333 / Gator Mulching Blades 2 Pack

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•Dimensions: Length 21-3/8", Width 2-3/4", Thickness 0.164", Center Hole 7 point star, Air Lift 1", Cutting Edge Length 5-7/16", Compatible Deck Size 42". The length of the blade is measured diagonally from one end to the other
•Replaces OEM Part: GX22151, GY20850, AM131033, AM137333, AM141033, AM137328, 50-3231, UC21583
•Compatible with: John Deere 102, 105, 115, 125, 135, D100, D105, D110, D120, D125, D130, E100, E110, E120, E130, LA100, LA105, LA110, LA115, LA120, LA125, LA135, LT160, LT180
•Compatible with: John Deere S100, S110, S120, S130, S240, SST15, SST16, X105, X106, X107, X110, X120, X125, X126, X145, X300, X304, X310, X500, X520, Z225, Z235
•Enhance your lawn care routine with our reliable UDC Mower blades! Expertly crafted for sharpness and durability, our blades ensure precise grass cutting every time
•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.

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$39.89

$50.89

-22%

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BCQNXX

BCQNXX AM141034 Lawn Mower High Lift Blade for 42 Inch Deck John Deere D105 D110 LT160 LA135 Z225 - Heavy Duty Blade Replaces AM141034 AM141032 M154062 AM137327 M154061-2 Pack

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•【Compatible with】For AM141034: Fits John Deere 102, 105, 115, 125, 135; D100, D105, D110, D120, D125, D130; E100, E110, E120, E130; L108, L111, L118, LA100; LA105, LA110, LA115, LA120, LA125, LA135; LT160, LT180; S100, S110, S120, S130, S240; SST15, SST16; X105, X106, X107, X110, X120, X125, X126, X145, X300, X304, X310; Z225, Z235; Sabre: 1338G, 1538H, 1546G, 1638HS, 1646H; EUROPRO 1338GS, 1538HX, 1546GS, 1646HS
•【Compatible with】①For AM137327: Fits LT180, FH500V, SST15, SST16, CV15S, X300, X304; ②For AM141032: Fits LT160, CV15S, CV460S, SST15 , X300, X304, X310, FS600V, 31P707, Z225, Z235 EZtrak Mower; ③For M154061&M154062: Fits LT160, LT180, Z225, Z235, EZtrak Residential Zero Turn Mowers
•【Replacement Part Number】Replaces John Deere AM141034, AM141032, M154062, AM137327, M154061
•【High Quality】The blade is made of heavy duty metal, ensuring its durability and long-lasting use. Powder-coat finish help to prevent rust. Extended cutting surface helps with cutting efficiency.The strong and durable blade is ideal for cutting tall grass and dense vegetation in the yard.
•【Blades Specification】Package includes: 2 X High Lift Blades. Length: 21-1/4", Width: 2-3/4", Thickness: .157", Center Hole Diameter: 7/8", 7-Point Star. For Deck Size: 42"

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$29.99

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John Deere

John Deere Original Equipment Mower Blade Kit #GY20850

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•OEM John Deere Part Number: GY20850
•Fits Mowers/Tractors: 102, 105, 115, 125, 135
•Fits Mowers/Tractors: LA100(42in), LA105(42in),LA110(42in), LA115(42in), LA120(42in), LA125(42in), LA135(42in)
•Fits Mowers/Tractors: D100, D105, D110, D120, D125, D130, X125, X145

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$41.75

$45.95

-9%

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Luojiedejinbiao

Luojiedejinbiao 2 PCS Mulching Blades Replacement Fits for John Deere 42" Mower Z TRAK Mower Z335E Z335M Z345M Z345R X330 X350 X354 X370 X380#M170642

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•OEM Part Number: M170642, UC22008. Fit for some 42" John Deere Lawn and Garden Tractors. Include 2 PCS M170642 Blades
•Replacement Model: Fit for John Deere 42" Riding Mower X330 X350 X354 X370 X380, Fit for John Deere Z Trak Zero Turn mower 42" Z335E Z335M Z345M Z345R Z315E Z320M Z320R
•The 42-inch mower blades Fit for John Deere 42" mower are made of materials that contain boron, carbon, manganese and other materials that ensure their strength. The durability is guaranteed to last for a long time of use and sharpness
•Please double check the blade type, size and applicable brand before purchase to avoid unnecessary returns
•Our M170642 lawn mower blades undergo a rigorous quality inspection before leaving the factory, if there are any problems with the product, we will offer help

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$39.99

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Maxpower

MaxPower 561811XB 2 Blade Commercial Mulching Set for Many 42 in. John Deere Mowers Replaces OEM # GX22151, GY20850

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•Includes 2 commercial mulching blades for many 42 in. cut John Deere mowers
•Replaces OEM #'s GX22151, AM137328, AM141033, GY20850, UC21583
•Each blade is 21-3/8 in. L and 2-1/2 in. W
•7 point start center hole
•All MaxPower blades are sharpened during the manufacturing process and then powder coated for your protection. This coating will come off during the first cut to reveal a precision sharpened blade.

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$30.00

$43.99

-32%

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budrash

budrash GX22151 Mower Blades for John Dee re 42" Deck, GY20850 Mulching Blades for JD 102 115 125 135 D100 D110 D125 D130 Lawn Tractor, Replace AM141033 AM137333, 2 Pack

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•【Application】The mulching mower blade kit is ideal for cutting tall grass, creating a vertical angle that maximizes airflow through the blade and provides vertical suction. Please check the size and center hole shape of your original blade before purchasing
•【Compatible】The tractor blades are compatible with John Dee re ①102, 105, 115, 125, ②D100, D105, D110, D120, ③LA100, LA105, LA110, LA115, ④X105, X106, X110, X120, ⑤E100, E110, E120, E130, etc lawnmowers
•【Replace OEM Part Numbers】GX22151, GY20850, AM137328, AM141033, AM137333, AM141031, UC21583. Please check the original part number and make sure this part fit your model before purchase
•【Durable】The deck blades with 7-point star center holes are made of heavy-duty metal. Please make sure the spindles on your mower are 7-point star blade mounts
•【Package Includes】Two pack lawn tractor blades with 21-3/8" in length, 2-3/4" in width, and 1/5" in thickness

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$24.99

$27.39

-9%

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Maxpower

Maxpower 561811B 2 Set of 3-N-1 Blades for Many 42 in. Cut John Deere Mowers, Replaces OEM #'s GX22151 and GY20850

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•2-Blade set fits 42" John Deere
•Replaces OEM no. GX22151 and GY20850
•Also replaces Windsor 50-3231
•Proudly Made in USA
•Each blade measures 21-3/8" Long by 2-3/4" Wide

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$34.20

$38.00

-10%

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budrash

budrash GX20249 Mower Blade Fit for John Dee re 42" Deck, GY20567 High Lift Blades Fit for John Dee re L110 L118 L100 L111 Scotts L1742 Sabre 1642HS 42" Mower Tractor, Replace for GX20433, 2 Pack

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•【Blades Application】42 inch mower blades with aggressive bend at the sail and maximum upward lift, recommended for bagging and side discharge mowing, perform well in thick grass. Blades fit well on 42 inch deck lawn mower with a round center hole
•【Compatible Riding Mower】Hi lift blades compatible with John Dee re JD L100, L105, L107, L108, L110, L111, L118; for Scotts L1742, L17.542; for Sabre 1642HS & 1742HS (2002)-PC9096, 14.542GS-PC9095; for Sabo 108-14.5, 108-17HS-PC9233
•【Replacement Part Number】Replaces for John Dee re JD GX20249, GX20433, GY20567; for MTD 742-04130-4046; for Oregon 91-139; 330-615. Please verify your part number before you order
•【Dimensions】Replacement blades measure length: 21-3/8", width: 2-1/2", thickness: .157", center hole diameter: 11/16", outside hole diameter: 7/16", center to center outside hole: 3-11/16". Please allow slight differences due to manually measured
•【Package Included】High lift mower blade x 2. Made of metal, black paint finish

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$28.99

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wyevee

wyevee AM137327 High Lift Blades Compatible with John Deere 42" Deck Cut, AM141032 Mower Blade Fit for D105 D125 D130 LT150 LA135 Z225 EZtrak Lawn Tractor, Replaces AM141034, M154061, M154062, 2 Pack

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•[Replace Part Numbers] The High Lift Blade compatible with John Dee re AM137327, AM137328, AM137330, AM137333, GX22151, GY20850, AM140973, AM141032, AM141034, M139802, M139803, M145969, M145970,M149422, M154061, M154062, M156416, M159140, etc. Please ensure that you double-check your original part number before placing the order.
•[Compatibility] The lawn mower blades fit for 42" cut deck John Dee re JD lawn mowers ①LT160, LT180, FH500V, CV460S, SST15, SST16, CV15S, X300, X304, X310, FS600V; ②102, 105, 125, D100, D105, D120, D125, E100, E110, E130, L108, LA100, LA105, LA110, LA115, LA120, S100, S110, etc; ③ Z225, Z235 EZtrak Mower. Please refer to the product description for more models.
•[Superior High Lift Mower Blades] Featuring a vertical angle designed to optimize airflow, our high lift mower blades excel at bagging and efficiently discharging clippings. Say goodbye to clogged discharge chutes and uneven cutting. Experience the durability and performance of our high-lift mower blades today!
•[Effortless Installation] Installing our blades is a breeze and takes just a few minutes. During installation, ensure that the blades are positioned with the cutting edge facing in the same direction. Crafted from top-quality metal, our blades are meticulously powder-coated for added safety. As you continue to use the blades, the coating will naturally wear off, revealing the inherent sharpness, and eliminating the need for sharpening.
•[Blade Dimensions] 2 × AM137327 High Lift Mower Blade. Blade Length: 21-1/2 inches, Width: 2-3/4 inches, Thickness: 1/5 inches, Center Hole: 7-point star, Cutting Deck Size: 42 inches. Please check the center hole and size of your old blade before submitting an order.

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$25.99

$29.99

-13%

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Maxpower

Maxpower 561806B 2-Blade Set for 42" Cut John Deere, GX20249, GX20433, GY20567

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•Includes 2 blades for many 42 in. cut John Deere, Sabre and Scott's brands
•Replaces OEM no. GX20249, GX20433, GY20567, Windsor OEM # 50-3036
•Each blade measures 21 in. L and 2-1/2 in. W
•Has a 0.675 in. center hole diameter
•Check your owner's manual to verify that the OEM number of the blade being replaced matches one of the OEM numbers provided for this item.

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$27.23

$36.00

-24%

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