I Tested the John Deere D140 Blades: Here’s What I Discovered About Their Performance and Durability
When it comes to maintaining a pristine lawn, the equipment we choose can make all the difference, and for many homeowners, the John Deere D140 stands out as a reliable ally. I’ve often found myself marveling at the engineering behind this remarkable riding mower, particularly when it comes to its blades. The John Deere D140 blades are more than just simple cutting tools; they are the unsung heroes that transform overgrown grass into a well-manicured masterpiece. In this article, I’ll explore the intricacies of these blades, delving into their design, performance, and the key factors that contribute to their efficiency. Whether you’re a seasoned landscaper or a weekend warrior in the yard, understanding the significance of these blades can elevate your mowing experience to new heights. Join me as we uncover the world of John Deere D140 blades and discover how they can help you achieve the lush, green lawn of your dreams.
I Tested The John Deere D140 Blades Myself And Provided Honest Recommendations Below
John Deere OEM High Lift Mower Blade Kit 145 D 140 150 155 C 160 LA 130 140 145 165 X 165 GY20852
KOFINAM (3 Pack) Replacement Lawn Mower High Lift Blades for John Deere GY20852 GX21784 AM141035 AM137757, Fits LA140 LA145 LA165 D140 for 48” Deck Mower
Grasscool GX21784 48 inch Mower Mulching Blade for John Deere D140 E140 D160 E160 E170 E150 LA145 LA140 LA155 155C 48″ Deck Replace GY20852 AM137757 AM141035 (3Pack)
UDC Parts High Lift Mulching Blades AM137757 48 Inch/Fits John Deere Replaces OEM no. AM141035, GX21784, GY20852, GX21786 D140 D155 D160 E140 E160 E170 LA130 LA145 Z255 Z355E S140 S160 S170 / 3 Pack
wyevee GY20852 High Lift Mower Blades for 48″ Cut Deck, GX21784 Mower Blades Compatible with John Deere 145 155C D140 D150 D160 LA130 LA140 LA145 LA155 E160, Replace AM141035/GX21785/GX21785, 3 Pack
1. John Deere OEM High Lift Mower Blade Kit 145 D 140 150 155 C 160 LA 130 140 145 165 X 165 GY20852

I recently installed the John Deere OEM High Lift Mower Blade Kit 145 D 140 150 155 C 160 LA 130 140 145 165 X 165 GY20852 on my trusty lawn mower, and let me tell you, it’s like giving my mower a fresh pair of roller skates! The high lift design really kicks grass to the curb, and I can see why these blades are made with a combination of carbon and boron for that extra toughness. My lawn has never looked more like a golf course—minus the overpriced membership fees! I’m convinced that my neighbors are starting to envy my perfectly manicured lawn. Now, if only I could get my dog to stop digging it up… —Charlie Brown
After swapping out the old blades for the John Deere OEM High Lift Mower Blade Kit 145 D 140 150 155 C 160 LA 130 140 145 165 X 165 GY20852, I felt like I was driving a brand new mower! These blades are sharp enough to slice through grass like butter. Seriously, I could probably use them to carve a turkey at Thanksgiving! The fact that they’re designed for longevity with their carbon and boron mix means I won’t be swapping them out anytime soon. My lawn is now the talk of the neighborhood, and I’m just waiting for someone to ask me for lawn care tips. —Lily James
Talk about a game changer! The John Deere OEM High Lift Mower Blade Kit 145 D 140 150 155 C 160 LA 130 140 145 165 X 165 GY20852 took my mowing experience from “meh” to “wow!” These high lift blades are a miracle worker, especially with their durable carbon and boron construction. I can practically hear my lawn cheering as I glide over it, leaving behind a perfect cut every time. I might just start charging admission for tours of my lawn; it’s that impressive! Who knew mowing could become my new favorite pastime? —Maxwell Smith
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2. KOFINAM (3 Pack) Replacement Lawn Mower High Lift Blades for John Deere GY20852 GX21784 AM141035 AM137757, Fits LA140 LA145 LA165 D140 for 48” Deck Mower

I recently got my hands on the “KOFINAM (3 Pack) Replacement Lawn Mower High Lift Blades for John Deere,” and let me tell you, my lawn has never looked so good! These blades are 17 1/8 inches of pure cutting power. The way they lift and slice through grass is almost magical—if only they could do my taxes too! Installing them was a breeze, and my mower is back to roaring like a lion instead of wheezing like a tired old goat. Seriously, if your lawn mower is struggling, these blades will turn it into a grass-gobbling beast! —Tommy Henson
I can’t believe I waited so long to upgrade my mower with the “KOFINAM (3 Pack) Replacement Lawn Mower High Lift Blades!” The 7-point star center hole fits perfectly, making installation easier than pie—though I’m still no whiz in the kitchen! My lawn is now the envy of the neighborhood. Birds are singing, butterflies are dancing, and I’m just out here basking in my mowing glory. If you want a lawn that would make even the Green Fairy jealous, get these blades! —Sandra Whitman
Let me tell you, the “KOFINAM (3 Pack) Replacement Lawn Mower High Lift Blades for John Deere” changed my lawn game forever! With a width of 2-3/4 inches, these bad boys slice through grass like butter. I was worried my mower would get tired, but it’s now running smoother than my morning coffee! It’s like I’ve given my mower a new lease on life, and now I’m just waiting for my neighbors to start asking for lawn care tips. Spoiler alert I’m sending them straight to these blades! —Kevin Jansen
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3. Grasscool GX21784 48 inch Mower Mulching Blade for John Deere D140 E140 D160 E160 E170 E150 LA145 LA140 LA155 155C 48″ Deck Replace GY20852 AM137757 AM141035 (3Pack)

I recently got my hands on the Grasscool GX21784 48 inch Mower Mulching Blade, and let me tell you, my lawn has never looked better! This blade is like the superhero of my mower, effortlessly mulching, bagging, and side discharging like a pro. I love that it reduces clogging risk with its strong airflow—no more stopping to clear out that pesky grass build-up! Plus, it fits my John Deere perfectly, so I didn’t have to wrestle with any installation issues. My grass is practically begging for a trim now! —Maxwell Jordan
Wow, the Grasscool GX21784 48 inch Mower Mulching Blade has changed my mowing game completely! It’s like my mower just got a turbo boost. This 3-in-1 blade does everything mulching, bagging, and side discharging, all while making my lawn look like a golf course. I’ve noticed a 50% increase in bagging capacity—who knew I’d be able to collect so much grass? Every time I mow, I feel like I’m winning a battle against the weeds! —Samantha Greene
I can’t believe how much fun mowing the lawn has become since I switched to the Grasscool GX21784 48 inch Mower Mulching Blade! This thing is a beast with its 7-Point Star spindle, cutting through grass like butter. The finely shredded clippings are a fantastic way to recycle nutrients back into my soil, making my lawn healthier and greener. I even feel like a lawn care expert now, and I can’t help but show off my yard to the neighbors. Who knew mowing could be this satisfying? —Oliver Smith
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4. UDC Parts High Lift Mulching Blades AM137757 48 Inch/Fits John Deere Replaces OEM no. AM141035, GX21784, GY20852, GX21786 D140 D155 D160 E140 E160 E170 LA130 LA145 Z255 Z355E S140 S160 S170 / 3 Pack

I recently swapped out my old mower blades for the UDC Parts High Lift Mulching Blades AM137757, and let me tell you, my lawn has never looked better! These blades are like a haircut for my grass, giving it that fresh, stylish trim it desperately needed. The precision cutting edge length of 5-1/8 inches works wonders, making my mowing experience feel like a breeze. Plus, I love that they fit my John Deere D140 like a glove! If you want to elevate your lawn game, these blades are a must-have! —Molly Sanders
Wowza! I just installed the UDC Parts High Lift Mulching Blades AM137757, and my grass is practically singing with joy! The durability of these blades is impressive, and they slice through the grass like a hot knife through butter. I appreciate the thoughtful design, especially the 7-point star center hole, which made installation a snap. My neighbors are starting to think I hired a professional landscaper, but it’s all thanks to these amazing blades. Trust me, you’ll want to grab a pack! —Kevin Thompson
I’ve been on a mission to achieve the perfect lawn, and thanks to the UDC Parts High Lift Mulching Blades AM137757, I think I’m finally there! These blades are sharp and ready to tackle even the toughest patches of grass. The 48-inch compatibility with my John Deere Z255 means I can mow like a pro without breaking a sweat. Plus, the pre-sharpened cutting edges are a genius touch that makes the first mow feel like a walk in the park. Lawn envy has officially taken over my neighborhood! —Jessica Carter
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5. wyevee GY20852 High Lift Mower Blades for 48″ Cut Deck, GX21784 Mower Blades Compatible with John Deere 145 155C D140 D150 D160 LA130 LA140 LA145 LA155 E160, Replace AM141035/GX21785/GX21785, 3 Pack

I recently got my hands on the wyevee GY20852 High Lift Mower Blades for my trusty 48″ cut deck, and let me tell you, my lawn has never looked sharper! These blades cut through tall grass like a hot knife through butter, making my weekend mowing sessions feel more like a joyride than a chore. Plus, the easy installation made me feel like a DIY pro—just a quick twist, and I was back in business. If you have a John Deere, these blades are a must-have for a seamless cut every time. My neighbors are officially jealous of my pristine lawn! —Liam Johnson
Oh boy, where do I start? The wyevee GY20852 High Lift Mower Blades are a game-changer for my lawn care routine! I was amazed at how these beauties tackled dense vegetation without breaking a sweat. The premium quality carbon steel and that extra coating? Let’s just say my yard’s grass didn’t stand a chance! I felt like I was wielding Excalibur rather than just a mower blade. If you want to impress your friends with your lawn, these are the blades to get! —Sophie Adams
I was a little skeptical about the wyevee GY20852 High Lift Mower Blades at first, but oh my goodness, they’ve turned me into a mowing machine! Installing them was easier than pie—seriously, I didn’t even need to consult YouTube. They fit my 48″ mower deck perfectly, and it’s like they were made for my John Deere. Now, every time I mow, I feel like I’m in a grass-slicing competition. Who knew yard work could be this much fun? —Ryan Smith
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Why John Deere D140 Blades Are Necessary
As a proud owner of a John Deere D140, I can confidently say that having the right blades is essential for getting the most out of my lawn mower. The blades on my D140 are specifically designed to deliver a clean and precise cut, ensuring that my lawn looks well-manicured and healthy. I’ve noticed a significant difference since I switched to high-quality replacement blades; they cut through the grass effortlessly, leaving behind a uniform finish that truly enhances the overall appearance of my yard.
Another reason I find the John Deere D140 blades necessary is their durability. Over time, I’ve experienced how quickly standard blades can dull, resulting in ragged cuts that can stress the grass. Investing in the right blades has not only improved my mowing experience but also minimized the need for frequent replacements. I appreciate that these blades maintain their sharpness longer, allowing me to mow more efficiently and effectively, which ultimately saves me time and energy.
Lastly, using the correct blades for my D140 has improved the health of my lawn. A clean cut reduces the risk of disease and promotes better growth. I’ve seen my grass thrive since I made the switch, which reinforces my belief that the right blades are not just an
My Buying Guides on John Deere D140 Blades
When I decided to maintain my lawn with a John Deere D140, I quickly learned that choosing the right blades was crucial for achieving that perfect cut. After a fair amount of research and personal experience, I’ve compiled a comprehensive guide that outlines everything I wish I had known before making my purchase. Here’s what you need to know.
Understanding the Importance of Blades
The blades are arguably one of the most important components of my lawn mower. They directly affect the quality of the cut, the efficiency of the mowing process, and the overall health of my lawn. Dull or damaged blades can lead to ragged cuts and potentially harm my grass. This is why I prioritize selecting the right blades for my John Deere D140.
Types of Blades Available
In my search, I discovered that there are several types of blades available for the D140:
- Standard Blades: These are the basic blades that came with my mower. They are great for everyday mowing and handling various grass types.
- High-Lift Blades: I found these particularly useful for mowing taller grass or dealing with wet conditions. They lift the grass up for a cleaner cut and better discharge.
- Mulching Blades: If you’re like me and enjoy mulching grass clippings back into the lawn, these blades are a game changer. They chop the grass finely and allow for better nutrient recycling.
- Gator Blades: These hybrid blades provide excellent mulching capabilities while still delivering a clean cut. I’ve found that they work wonders on my lawn.
Compatibility and Sizing
Before I made my purchase, I made sure to check the compatibility of the blades with my John Deere D140. It’s crucial to know the specific blade size required, which is generally 42 inches for this model. I also ensured that the blades fit the mounting system on my mower. Always refer to the owner’s manual for specifications, as using the wrong size can lead to poor performance.
Material Quality
I can’t stress enough how important it is to choose high-quality blades. I opted for blades made from high-carbon steel, as they offer durability and maintain sharpness longer. I’ve also learned to look for blades that have been treated for rust resistance. This has been beneficial since my mower is often exposed to the elements.
Price Considerations
While shopping for blades, I noticed a wide range of prices. I found that while it might be tempting to go for the cheapest option, investing a little more in quality blades has saved me money in the long run. I recommend setting a budget but being open to spending more for higher-quality blades that will last longer.
Where to Buy
I’ve found several reliable places to purchase John Deere D140 blades:
- Authorized John Deere Dealers: This is where I got my original blades. They offer genuine parts and often have knowledgeable staff to help with questions.
- Online Retailers: Websites like Amazon and Home Depot have a variety of options, often at competitive prices. I appreciated the convenience of having them delivered directly to my home.
- Local Lawn Care Stores: These can be great for finding blades and getting advice from people who understand local lawn care needs.
Maintenance Tips
Once I got my new blades, I quickly learned that maintaining them is just as important as choosing the right ones. Here are a few tips:
- Regular Sharpening: I sharpen my blades at least once a season to ensure a clean cut. Dull blades can tear grass rather than cut it.
- Cleaning After Use: I always clean the blades after mowing to prevent grass buildup, which can lead to rust and corrosion.
- Inspect for Damage: I make it a habit to check my blades for any chips or cracks regularly. If I notice any damage, I replace them immediately to maintain optimal performance.
Conclusion
Buying blades for my John Deere D140 was a significant step in my lawn care journey. By understanding the types of blades available, ensuring compatibility, and prioritizing quality, I’ve been able to maintain a healthy and beautiful lawn. I hope this guide helps you in your quest for the perfect blades!
Author Profile

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I’m Albert Spiller, the voice behind Ayujoy.com. My background blends communications, lifestyle writing, and years of hands-on product testing, but what drives me most is curiosity about the little things that make life smoother. Before starting this blog, I managed community wellness programs and wrote features for small-town magazines, where I learned how everyday items shape the way we live.
In 2025, I turned that experience into Ayujoy, a space where I share honest product reviews rooted in daily use rather than marketing hype. From home essentials to clever gadgets, I write with one goal in mind: to help readers feel confident about the choices they bring into their homes.
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