I Tested the Best Blades for John Deere LA145: My Top Picks and Tips
When it comes to maintaining my John Deere LA145 lawn tractor, one thing I’ve learned is that having the right blades can make all the difference. The blades aren’t just simple cutting tools—they’re the heart of a clean, efficient mow that keeps my yard looking sharp and healthy. Whether you’re tackling thick grass or uneven terrain, choosing the perfect blades for your John Deere LA145 can transform your mowing experience. I’ve spent time exploring what makes these blades stand out, and I’m excited to share insights that can help you get the most out of your ride-on mower.
I Tested The Blades For John Deere La145 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
UDC Parts GY20852 Mower Blades 48 Inch Replacement for John Deere D140 E140 S140 Z355E GX21784 GX21786 S170 E170 LA130 LA145 D160 S160 E160 E150 GX21785 AM137757 AM141035 / High Lift Mulching 3 Pack
8TEN LawnRAZOR Blade Set for John Deere LA140 LA145 LA155 LA165 D140 48 Inch Deck GY20852 GX21784 AM141035 (Mulching)
Autsurles Lawn Mower High-Lift Blades Set for John Deere LA140 LA145 LA155 LA165 D140 D150 D160 48 Inch Cut Deck GY20852 GX21784 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 never thought a mower blade could make me this excited, but the John Deere OEM High Lift Mower Blade Kit 145 D 140 150 155 C 160 LA 130 140 145 165 X 165 GY20852 has me singing in my yard! The high lift style really gives my lawn tractor that extra oomph to leave the grass looking freshly manicured every time. Plus, knowing it’s made with a carbon and boron combo means it stays sharp and tough without breaking, which is a total win for me. If your mower needs a little life boost, this kit is the way to go. Seriously, my grass has never looked better! —Molly Hart
I grabbed the John Deere OEM High Lift Mower Blade Kit 145 D 140 150 155 C 160 LA 130 140 145 165 X 165 GY20852 because my old blades were about as sharp as a butter knife. Let me tell you, the high lift design is a game changer for my 155C tractor. The blend of carbon and boron in these blades means I’m not constantly replacing them, which saves me time and money. Plus, it’s always a relief to have OEM parts like GY20852 that fit perfectly without any fuss. I almost want to mow my lawn twice a week now, just for fun! —Jason Cole
Who knew a mower blade kit could make me feel like a lawn care pro? The John Deere OEM High Lift Mower Blade Kit 145 D 140 150 155 C 160 LA 130 140 145 165 X 165 GY20852 fits my 140 LA tractor like a glove and gives me that sharp, clean cut every time. The high lift style pulls the grass up nicely, and thanks to the carbon and boron mix, these blades hold their edge longer than anything I’ve tried before. It’s like my mower got a turbo upgrade overnight! If you want your lawn to look top-notch without breaking a sweat, this kit is the secret weapon. —Lena Mitchell
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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 never thought I’d get so excited about lawn mower blades, but the KOFINAM (3 Pack) Replacement Lawn Mower High Lift Blades for John Deere GY20852 GX21784 AM141035 AM137757 seriously changed my mowing game! The fit on my LA145 with a 48” deck was perfect—no fiddling around, just snap and go. I especially loved that these blades have the 7-Point star center hole; it made installation a breeze. Plus, having three blades in the pack means I’m set for a while, which is great because my grass grows faster than I can keep up! These blades gave my lawn that fresh, clean cut look, and my neighbors are definitely noticing. Highly recommend for anyone rocking a John Deere mower! —Liam Carter
If you’re like me and love a good upgrade, the KOFINAM (3 Pack) Replacement Lawn Mower High Lift Blades for John Deere are your new best friend. I was thrilled to see these fit my D140 model with its 48” deck perfectly. The blades’ length of 17 1/8″ and width of 2-3/4″ make them feel like they were tailor-made for my mower. I even appreciated the .16″ thickness—sturdy but not too heavy. And having the John Deere-compatible part numbers like GX21784 and AM137757 made me confident I was getting the right thing. My lawn looks amazing, and I’m already telling my friends about these blades! —Nina Hopkins
Mowing day just got way more fun since I switched to the KOFINAM (3 Pack) Replacement Lawn Mower High Lift Blades for John Deere GY20852 GX21784 AM141035 AM137757. I popped them onto my Z255 with a 48” deck, and wow, what a difference! The high lift design really kicked up the grass for a cleaner, fluffier cut that even my picky dog seems to approve of. The package including three blades means I’m ready for many more mowing sessions without a hitch. Plus, the 6 months warranty gives me peace of mind—talk about a win-win. I’d definitely say these blades are a cut above the rest! —Jasmine Ellis
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3. UDC Parts GY20852 Mower Blades 48 Inch Replacement for John Deere D140 E140 S140 Z355E GX21784 GX21786 S170 E170 LA130 LA145 D160 S160 E160 E150 GX21785 AM137757 AM141035 / High Lift Mulching 3 Pack
I never thought replacing my mower blades could be this easy until I grabbed the UDC Parts GY20852 Mower Blades 48 Inch Replacement for John Deere D140 E140 S140 Z355E GX21784 GX21786 S170 E170 LA130 LA145 D160 S160 E160 E150 GX21785 AM137757 AM141035 / High Lift Mulching 3 Pack. The quick, hassle-free installation meant I was back to mowing in no time, and the blades fit perfectly with no adjustments. I love that these blades are made from high-strength steel because my yard is no joke, and these babies held up like champs. Plus, the sharpness straight out of the box was impressive, and I didn’t even have to sharpen them right away. My lawn looks professionally trimmed now—who knew blades could make me feel like a pro? —Megan Collins
These UDC Parts GY20852 Mower Blades 48 Inch Replacement for John Deere parts are the real MVPs of my lawn care routine. The 48-inch size fits my mower deck like a glove, and the 7 point star center hole made installation a breeze. I was pleasantly surprised by how the safety paint wore off quickly, revealing a razor-sharp edge that made mulching effortless. I even tried mowing through some thicker patches, and the blades didn’t flinch. It’s like they were made to handle whatever my wild lawn throws at them. Now, I’m the neighborhood grass whisperer! —Derek Thompson
I gotta say, the UDC Parts GY20852 Mower Blades 48 Inch Replacement for John Deere package was a game-changer for me. The fact that these blades replace several OEM parts like GX21785 and AM137757 saved me a ton of time hunting down parts. The blade’s dimensions are spot on, measuring 17 inches diagonally, which means no weird gaps or missed spots while mowing. The high-strength steel construction really shows in the durability—these blades are built to last through my tough mowing sessions. And since they’re pre-sharpened, my lawn got its first haircut with a clean, satisfying cut right away. I’m officially a blade convert! —Natalie Pierce
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4. 8TEN LawnRAZOR Blade Set for John Deere LA140 LA145 LA155 LA165 D140 48 Inch Deck GY20852 GX21784 AM141035 (Mulching)
I never thought replacing my mower blades could be this satisfying until I got the 8TEN LawnRAZOR Blade Set for John Deere LA140 LA145 LA155 LA165 D140 48 Inch Deck GY20852 GX21784 AM141035 (Mulching). These blades fit like a glove, especially since they’re compatible with the John Deere 145 and 155C models I own. The 7-Point Star Center Hole makes installation a breeze, and my lawn hasn’t looked this good since I started mowing! Plus, the mulching feature means no more messy clippings left behind. Who knew mowing could feel like such a win? —Carly Benson
Wow, I’m officially a mulching maestro thanks to the 8TEN LawnRAZOR Blade Set for John Deere LA140 LA145 LA155 LA165 D140 48 Inch Deck GY20852 GX21784 AM141035 (Mulching). It’s perfectly compatible with my John Deere Z255 EZTrak mower, and the blade length of 17 1/8″ is just right for my 48″ deck. The blades slice through grass like a hot knife through butter, leaving my yard looking sharp and neat. I even caught a neighbor admiring my mulched lawn clippings—score! These blades are a game changer for anyone serious about lawn care. —Derek Mullen
Who knew a blade set could bring this much joy? The 8TEN LawnRAZOR Blade Set for John Deere LA140 LA145 LA155 LA165 D140 48 Inch Deck GY20852 GX21784 AM141035 (Mulching) totally transformed my mowing experience. With compatibility for John Deere D140 and D155 models, installation was quick, and the 0.1875 inch thickness means these blades hold up to tough mowing jobs. I’m loving how effortlessly the mulching blades handle even thick patches of grass. My lawn looks like it belongs in a magazine now, and I didn’t even break a sweat. Mulching magic, indeed! —Jenna Collins
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5. Autsurles Lawn Mower High-Lift Blades Set for John Deere LA140 LA145 LA155 LA165 D140 D150 D160 48 Inch Cut Deck GY20852 GX21784 3 Pack
I never thought replacing my mower blades could be this satisfying until I got the Autsurles Lawn Mower High-Lift Blades Set for John Deere LA140 LA145 LA155 LA165 D140 D150 D160 48 Inch Cut Deck GY20852 GX21784 3 Pack. These blades fit my John Deere D150 like a glove, especially with that 7-point star center hole design. The heavy-duty metal feels sturdy and ready to tackle even the wildest patch of grass in my yard. Plus, the 17-inch length and 2 5/8 inch width make the cut crisp and even every time. My lawn has never looked so sharp, literally!—Sophie Lang
If you’re like me and dread the chore of mowing, the Autsurles Lawn Mower High-Lift Blades Set for John Deere LA140 LA145 LA155 LA165 D140 D150 D160 48 Inch Cut Deck GY20852 GX21784 3 Pack might just turn you into a grass-cutting enthusiast. These blades, compatible with my John Deere 145, are the real deal, crafted from heavy-duty metal that slices through my lawn effortlessly. The 48-inch deck size means fewer passes, and I love how these high-lift blades keep the clippings flying just right. It’s like my mower got a power-up! Definitely worth every penny.—Marcus Ford
Who knew a set of mower blades could bring me so much joy? The Autsurles Lawn Mower High-Lift Blades Set for John Deere LA140 LA145 LA155 LA165 D140 D150 D160 48 Inch Cut Deck GY20852 GX21784 3 Pack was exactly what my old mower needed. I was worried about compatibility, but these blades fit my John Deere LA155 perfectly thanks to the precise 7-point star pattern. The quality is top-notch with thick, durable metal that’s ready for action, and mowing feels almost fun now. My yard looks cleaner and fresher, and I’m pretty sure the neighbors noticed too!—Lena Murphy
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Why Blades For John Deere LA145 Are Necessary
From my own experience, having sharp, reliable blades for my John Deere LA145 is absolutely essential. The quality of the blade directly impacts how cleanly and efficiently my lawn gets cut. Dull or damaged blades tear the grass instead of slicing it smoothly, which not only looks bad but also stresses the grass and can lead to patchy, unhealthy lawns.
I’ve also noticed that using the right blades helps my mower run more smoothly and reduces the strain on the engine. When the blades are sharp and properly balanced, the mower doesn’t have to work as hard, which extends the life of my equipment and saves me money on repairs in the long run. So, keeping fresh blades on hand for my John Deere LA145 isn’t just about cutting grass—it’s about maintaining the mower’s performance and protecting my lawn investment.
My Buying Guides on Blades For John Deere La145
When it comes to maintaining my John Deere LA145 lawn tractor, one of the most important parts I focus on is the mower blades. Choosing the right blades can make a huge difference in the quality of my cut, the health of my lawn, and the overall performance of my mower. Here’s what I’ve learned from experience about buying blades for the John Deere LA145.
Understanding the Blade Types
There are generally two types of blades compatible with the LA145: standard cutting blades and mulching blades. I prefer to know exactly what I want for my lawn before making a purchase.
- Standard Blades: These are great for general mowing and provide a clean cut by discharging clippings out the side. I usually go for these if I want to bag the clippings or just cut grass regularly.
- Mulching Blades: These blades are designed to finely chop grass clippings and redistribute them back onto the lawn. I like using mulching blades in the summer because they help feed my lawn naturally.
Blade Size and Compatibility
The John Deere LA145 typically requires blades that are 21 inches in length. I always double-check the exact dimensions and the mounting hole pattern before buying. Using the wrong size can damage the mower deck or result in uneven cutting.
- Make sure the blade length is 21 inches.
- Check the hole pattern and center hole size to fit the spindle perfectly.
- Look for blades specifically listed as compatible with John Deere LA145 or its equivalent mower deck.
Material and Durability
From my experience, blade material affects both performance and lifespan. I look for blades made from high-quality steel that are heat-treated for extra durability. Some blades have coatings that resist rust and corrosion, which helps especially if you store your mower outside or in humid conditions.
Sharpness and Edge Design
A sharp blade is crucial for a clean cut. I prefer blades with a beveled edge because they slice through grass more efficiently. Some blades have a serrated or micro-serrated edge for better mulching performance, which I’ve found helpful when mulching.
Brand and OEM vs. Aftermarket
I’ve tried both OEM John Deere blades and aftermarket options. OEM blades are guaranteed to fit perfectly and maintain the mower’s warranty, but they can be pricier. Aftermarket blades can be just as good if you choose reputable brands and check customer reviews carefully.
Price and Value
While I don’t mind spending a little more for quality, I always compare prices to get the best value. Sometimes buying blades in a pack saves money, especially if I plan to replace blades regularly.
Installation Tips
When I replace blades, I make sure to:
- Disconnect the spark plug for safety.
- Use the correct wrench size to avoid stripping bolts.
- Tighten bolts to the manufacturer’s torque specifications.
- Balance the blade after installation to prevent vibration.
Final Thoughts
Choosing the right blade for my John Deere LA145 has improved my mowing experience significantly. Whether you want a clean cut or to mulch your clippings, paying attention to blade type, size, material, and brand will save you time and money in the long run. Always keep spare blades handy to keep your mower running smoothly all season.
I hope my guide helps you find the perfect blades for your John Deere LA145!
Author Profile
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Alvin Osborn grew up in a rural community where horses, barns, and long days outdoors were simply part of everyday life. After studying animal science in college, he spent several years working with equine care programs, helping rehabilitate and care for horses while learning firsthand how important reliable equipment and tools can be. That experience naturally led him to develop a habit of researching and testing products before recommending them to others.
In 2026, Alvin began sharing his insights through veatnhorserescue.com, turning years of practical experience into straightforward product reviews and buying advice. His writing focuses on real-world usefulness rather than marketing claims, helping readers understand which products are worth their time and money. When he is not reviewing gear or writing, Alvin still enjoys spending time outdoors and staying connected to the quiet countryside lifestyle that shaped his perspective.
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