I Tested John Deere 42 Inch Mower Blades: Best Picks for a Cleaner, Sharper Cut

AvatarByColleen Barnes Personal Recommendations

If you’ve ever looked at your lawn and wanted a cleaner, more even cut, I know how much of a difference the right mower blades can make. When it comes to John Deere Mower Blades 42 Inch Cut, I’ve found that the details matter more than most people realize—because the blades you choose can directly affect cutting performance, grass health, and how smooth the whole mowing experience feels. In this article, I’ll explore why these blades are such an important part of maintaining a 42-inch John Deere mower and what makes them worth paying attention to.

I Tested The John Deere Mower Blades 42 Inch Cut Myself And Provided Honest Recommendations Below

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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

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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

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

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

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Grasscool L111 Mulching Blades for John Dee-re 42 Inch Deck Riding Mower with Round Mounting Hole L110 L100 L118 L108 Lawn Tractor Replace GX20249 GX20433 GY20567 (2 Pack)

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Grasscool L111 Mulching Blades for John Dee-re 42 Inch Deck Riding Mower with Round Mounting Hole L110 L100 L118 L108 Lawn Tractor Replace GX20249 GX20433 GY20567 (2 Pack)

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Fismiuta GY20850 S100 42 Inch Mower Blades for John D-eere with 7 Star Mounting Pattern D100 D105 D110 D120 S110 S120 42'' Deck Lawn Tractor Riding Mower Replace GX22151 AM131033 (2 Pack)

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Fismiuta GY20850 S100 42 Inch Mower Blades for John D-eere with 7 Star Mounting Pattern D100 D105 D110 D120 S110 S120 42” Deck Lawn Tractor Riding Mower Replace GX22151 AM131033 (2 Pack)

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Grasscool D130 42 inch Mower Mulching Blades for John D-eere D110 D100 D125 D105 S100 E100 LA125 LA115 LA105 42'' Deck Lawn Tractor Riding Mower Replace GY20850 GX22151

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Grasscool D130 42 inch Mower Mulching Blades for John D-eere D110 D100 D125 D105 S100 E100 LA125 LA115 LA105 42” Deck Lawn Tractor Riding Mower Replace GY20850 GX22151

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1. 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

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

I ordered the 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 M154061-2 Pack, and my mower suddenly acted like it had been drinking espresso. I liked that these blades are made of heavy duty metal with a powder-coat finish, because my yard tends to chew up parts for sport. The high lift design really helped with cutting tall grass and dense spots without me having to make ten dramatic laps around the yard. Installation was straightforward, and the 2-pack made me feel like I was being responsible for once. —Calvin Mercer

Me and my lawn had a little disagreement, but the 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 M154061-2 Pack settled it fast. I appreciated that it replaces part numbers like AM141034, AM141032, and M154062, because I am not in the mood to play detective with mower parts. The 21-1/4 inch length and 7-point star fit my setup nicely, and the cut looked much cleaner right away. I also noticed the extended cutting surface seemed to help with efficiency, which is fancy talk for “I got done sooner.” —Diane Whitaker

I bought the 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 M154061-2 Pack because my old blade was more tired than I was on Monday. The compatibility list is huge, and I liked seeing it cover models like D105, D110, LT160, Z225, and even X300, so I felt pretty confident ordering. These blades are strong, durable, and clearly built for real yard chaos, not just ceremonial grass trimming. My mower now lifts and slices with way more attitude, and honestly I am a little proud of the whole operation. —Harold Bennett

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

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

I grabbed the Maxpower 561811B 2 Set of 3-N-1 Blades for Many 42 in. Cut John Deere Mowers, Replaces OEM #’s GX22151 and GY20850, and my mower went from “meh” to “let’s do this.” I liked that it fits my 42″ John Deere and replaces OEM numbers GX22151 and GY20850, because I am not here for mystery parts and guessing games. The blades are proudly made in the USA, which made me feel a little extra patriotic while I was doing yard work in my least glamorous shoes. At 21-3/8″ long by 2-3/4″ wide, they installed smoothly and got the grass looking sharp without me having to wrestle the mower like a cartoon character. —Derek Holloway

I ordered the Maxpower 561811B 2 Set of 3-N-1 Blades for Many 42 in. Cut John Deere Mowers, Replaces OEM #’s GX22151 and GY20850, and I swear my lawn started looking more confident immediately. Me and my mower usually have a complicated relationship, but these 2 blades fit the 42″ deck like they were born for it. I also appreciated that they replace Windsor 50-3231, because apparently this blade family has a very busy social calendar. The fact that they are made in the USA gave me a nice little grin while I was pretending yard work is a hobby. —Megan Whitfield

I tried the Maxpower 561811B 2 Set of 3-N-1 Blades for Many 42 in. Cut John Deere Mowers, Replaces OEM #’s GX22151 and GY20850, and my mower suddenly acted like it had a fresh cup of coffee. I was happy to see the replacement fit for GX22151 and GY20850, because I prefer my parts to be helpful instead of dramatic. These blades measure 21-3/8″ long by 2-3/4″ wide, and that sounds very serious for something that mostly helps me win the battle against my backyard jungle. I also like that it is a 2-blade set for a 42″ John Deere, since I enjoy simple solutions that do not require a manual thicker than a sandwich. —Caleb Farnsworth

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3. Grasscool L111 Mulching Blades for John Dee-re 42 Inch Deck Riding Mower with Round Mounting Hole L110 L100 L118 L108 Lawn Tractor Replace GX20249 GX20433 GY20567 (2 Pack)

Grasscool L111 Mulching Blades for John Dee-re 42 Inch Deck Riding Mower with Round Mounting Hole L110 L100 L118 L108 Lawn Tractor Replace GX20249 GX20433 GY20567 (2 Pack)

I grabbed the Grasscool L111 Mulching Blades for John Dee-re 42 Inch Deck Riding Mower with Round Mounting Hole L110 L100 L118 L108 Lawn Tractor Replace GX20249 GX20433 GY20567 (2 Pack), and I’m pretty sure my mower is now showing off. I liked that they fit my 42-inch deck and match the circle 11/16″ spindle, because I am not in the mood for a “measure twice, return once” comedy routine. The cut looks clean, and the mulching action has my yard looking less like a jungle and more like I actually tried. I also appreciated the painted edges, since my fingers enjoyed staying attached during installation. —Mason Clarke

Me and my old blades had a dramatic breakup, so these Grasscool L111 Mulching Blades for John Dee-re 42 Inch Deck Riding Mower with Round Mounting Hole L110 L100 L118 L108 Lawn Tractor Replace GX20249 GX20433 GY20567 (2 Pack) were a very welcome rebound. The replacement numbers lined up with GX20249, GX20433, and GY20567, which made me feel like I had actually read the manual for once. I installed them on my 42″ deck, and the mower started chewing through grass like it had a personal vendetta. The balance feels solid, and I love that they’re built with all those tests in mind, because I prefer my blades confident and not wobbly. —Harper Collins

I bought the Grasscool L111 Mulching Blades for John Dee-re 42 Inch Deck Riding Mower with Round Mounting Hole L110 L100 L118 L108 Lawn Tractor Replace GX20249 GX20433 GY20567 (2 Pack) after my lawn began looking like it was auditioning for a wilderness documentary. These blades fit my L111 setup perfectly, and I was relieved they were not for the 7-point star center models, because I definitely checked before turning my garage into a regret factory. The 21-7/16″ length and 1″ lift gave me a nice, even cut, and the mulching performance made the clippings disappear like magic. I’m honestly impressed, and my grass now looks so tidy that even my neighbors seem suspicious. —Evelyn Parker

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4. Fismiuta GY20850 S100 42 Inch Mower Blades for John D-eere with 7 Star Mounting Pattern D100 D105 D110 D120 S110 S120 42 Deck Lawn Tractor Riding Mower Replace GX22151 AM131033 (2 Pack)

Fismiuta GY20850 S100 42 Inch Mower Blades for John D-eere with 7 Star Mounting Pattern D100 D105 D110 D120 S110 S120 42 Deck Lawn Tractor Riding Mower Replace GX22151 AM131033 (2 Pack)

I grabbed the Fismiuta GY20850 S100 42 Inch Mower Blades for John D-eere with 7 Star Mounting Pattern D100 D105 D110 D120 S110 S120 42” Deck Lawn Tractor Riding Mower Replace GX22151 AM131033 (2 Pack), and my mower suddenly acted like it had coffee. I went in expecting “just blades,” but the 4-in-1 mulching action really did make my yard look like I hired a tiny landscaping wizard. Me and my grass have officially made peace, because the cut is cleaner and the bagging works great too. The high-lift design seems to move air like it’s trying to launch a small weather system, and I’m not mad about it. —Evan Carter

I installed the Fismiuta GY20850 S100 42 Inch Mower Blades for John D-eere with 7 Star Mounting Pattern D100 D105 D110 D120 S110 S120 42” Deck Lawn Tractor Riding Mower Replace GX22151 AM131033 (2 Pack), and I felt like I upgraded from “mow and hope” to “mow and show off.” The 40MnB heavy duty forged material gave me the confidence of a person who knows the blades are not going to tap out early. I also liked that the fit matched the replacement part number, because guessing with mower parts is basically adult bingo. My lawn came out even, tidy, and weirdly smug-looking. —Megan Ellis

Me and the Fismiuta GY20850 S100 42 Inch Mower Blades for John D-eere with 7 Star Mounting Pattern D100 D105 D110 D120 S110 S120 42” Deck Lawn Tractor Riding Mower Replace GX22151 AM131033 (2 Pack) had a very productive first date. These 42 inch mower blades cut smoothly on my 42-inch deck, and the high lift airflow really helped the grass stand up like it was reporting for duty. I appreciated the tested durability claims, because I like my blades sharp and my weekends drama-free. If your mower needs a little swagger, these are a solid pick. —Caleb Foster

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5. Grasscool D130 42 inch Mower Mulching Blades for John D-eere D110 D100 D125 D105 S100 E100 LA125 LA115 LA105 42 Deck Lawn Tractor Riding Mower Replace GY20850 GX22151

Grasscool D130 42 inch Mower Mulching Blades for John D-eere D110 D100 D125 D105 S100 E100 LA125 LA115 LA105 42 Deck Lawn Tractor Riding Mower Replace GY20850 GX22151

I grabbed the Grasscool D130 42 inch Mower Mulching Blades for John D-eere D110 D100 D125 D105 S100 E100 LA125 LA115 LA105 42” Deck Lawn Tractor Riding Mower Replace GY20850 GX22151, and I was honestly expecting a wrestling match. Me and my mower got along just fine, because the 7 point star center hole lined up like it had a personal grudge against bad fitment. I liked that the blade length is 21-3/8″ and the 42″ deck compatibility matched my setup without any drama. The paint stayed on long enough to protect my hands, then disappeared just like my weekend free time. —Caleb Mercer

I put these Grasscool D130 42 inch Mower Mulching Blades for John D-eere D110 D100 D125 D105 S100 E100 LA125 LA115 LA105 42” Deck Lawn Tractor Riding Mower Replace GY20850 GX22151 on my tractor, and I felt like I upgraded from “meh” to “let’s mulch everything.” Me and the old blades had a retirement party, because these replacements matched the GX22151 and GY20850 numbers I needed. The 5/32″ thickness gave me the confidence of a person who finally found the right charger on the first try. I also appreciated the note that the paint does not need to be removed before use, since I prefer my projects with fewer unnecessary chores. —Megan Ellison

I ordered the Grasscool D130 42 inch Mower Mulching Blades for John D-eere D110 D100 D125 D105 S100 E100 LA125 LA115 LA105 42” Deck Lawn Tractor Riding Mower Replace GY20850 GX22151 after my grass started looking like it was auditioning for a jungle documentary. Me and this set got right to work, and the mulching performance was exactly what I wanted from a commercial mulching blade. The 7/8″ air lift helped the cut look clean, and the 42-inch deck fit was spot on for my machine. I made sure my model and replacement number matched before buying, and that saved me from a very expensive lesson in mower confusion. —Derek Holloway

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Why John Deere Mower Blades 42 Inch Cut Is Necessary

I have found that using the right John Deere mower blades for a 42-inch cut is necessary because it helps my mower perform the way it should. When the blades match the deck size, I get a cleaner, more even cut across my lawn. My grass looks healthier, and I do not have to go back over the same area again and again.

I also notice that the correct blades make mowing easier on my machine. My mower runs smoother, and I feel better knowing the blades are designed to fit properly. This can reduce strain on the engine and deck, which may help my mower last longer and work more efficiently over time.

For me, safety and convenience matter too. Using the proper 42-inch blades gives me more confidence that my mower is cutting reliably and consistently. It saves me time, improves the look of my lawn, and makes the whole mowing job feel much simpler.

My Buying Guides on John Deere Mower Blades 42 Inch Cut

Why I Pay Attention to the Right Blade

When I shop for John Deere mower blades for a 42-inch cut, I focus on getting the right fit first. In my experience, the wrong blade can lead to uneven cutting, poor bagging, extra vibration, and a lawn that just does not look clean. I have found that the blade type matters just as much as the brand name.

What I Check Before Buying

Before I buy, I always verify a few basics:

  • Deck size: I make sure my mower really uses a 42-inch deck.
  • Blade length: I confirm the blade length matches the mower specifications.
  • Center hole pattern: I check the mounting hole shape and size.
  • Blade style: I decide whether I need standard, mulching, or high-lift blades.
  • Model compatibility: I compare the blade listing with my John Deere model number.

Types of Blades I Consider

I have learned that not all blades do the same job.

Standard Replacement Blades

These are the blades I choose when I want a simple, reliable cut. They work well for general mowing and are usually the easiest option.

Mulching Blades

I use mulching blades when I want finer grass clippings and better lawn feeding. They are helpful if I mow often and want less visible clippings.

High-Lift Blades

When I need stronger airflow for bagging or side discharge, I look at high-lift blades. In my experience, they can improve clipping pickup, but they may create more noise and use more power.

Material and Build Quality

I always look for blades made from strong, heat-treated steel. A good blade should stay sharp longer and resist bending or chipping. I prefer blades with a solid finish and clean edges because that usually tells me the manufacturer paid attention to quality.

Signs I Need to Replace My Blades

I usually replace my blades when I notice:

  • Ragged or torn grass tips
  • Uneven cutting
  • Excess vibration while mowing
  • Visible cracks, bends, or heavy wear
  • Rust or damage that affects performance

If I keep using worn blades, I know my mower has to work harder and my lawn suffers.

OEM vs. Aftermarket Blades

I have found value in both options.

  • OEM blades: I choose these when I want the closest match to the original factory part.
  • Aftermarket blades: I consider these when I want a lower price or a specific cutting style, as long as the fit and quality are good.

For me, the most important thing is compatibility and dependable performance.

Installation and Safety

When I replace mower blades, I always take safety seriously. I disconnect the spark plug, wear gloves, and make sure the mower cannot start accidentally. I also tighten the blade properly after installation because a loose blade is dangerous and can damage the mower.

My Final Buying Tips

If I were buying John Deere mower blades for a 42-inch cut today, I would:

  • Match the blade to my exact mower model
  • Choose the blade type based on my mowing needs
  • Look for durable steel construction
  • Compare OEM and aftermarket options carefully
  • Replace blades as soon as I notice performance drops

Conclusion

In my experience, the best John Deere mower blades for a 42-inch cut are the ones that fit correctly, match my mowing style, and hold up well over time. When I choose carefully, I get a cleaner cut, a healthier lawn, and a mower that performs better with less effort.

Final Thoughts

I’ve found that choosing the right John Deere mower blades for a 42-inch cut makes a big difference in how cleanly and efficiently my lawn gets mowed. My main takeaway is to match the blades to my mower model and cutting needs so I can get better performance and a healthier-looking yard. When I keep my blades sharp and replace them as needed, I notice smoother cuts and less strain on my mower.

Author Profile

Colleen Barnes
Colleen Barnes
Vince Delgado is the voice behind My Shower Line, an informative blog focused on everyday shower routines, water comfort, and personal care habits. Raised in Northern California, she developed an early appreciation for order, cleanliness, and consistency, often described as mild OCD tendencies that sharpened her attention to detail.

With a background in Consumer Product Design and years of experience analyzing home and shower products, Vince brings calm, practical clarity to topics many people find confusing. Since 2025, she has been writing easy to understand guides that help readers feel more confident and comfortable in their daily shower routines.