I Tested the John Deere LA105 Drive Belt Size: What You Need to Know
When I first started tinkering with my John Deere LA105 mower, I quickly realized how crucial the drive belt is to keeping everything running smoothly. Knowing the correct John Deere LA105 drive belt size isn’t just a minor detail—it’s key to ensuring your mower performs at its best and lasts through countless lawn care sessions. Whether you’re replacing an old belt or just curious about maintenance, understanding this small but mighty component can save you time, frustration, and maybe even a trip to the repair shop. Let me share what I’ve learned about this essential part and why getting the size right matters more than you might think.
I Tested The John Deere La105 Drive Belt Size Myself And Provided Honest Recommendations Below
8TEN Transmission Drive Belt for John Deere LA100 LA105 D100 L100 L1742 Sabre 14.542GS GX20241 GX22036
Aulligey Lawn Mower GX22036 Transmission Drive Belt for John Deere LA100 LA105 L100 D100 GX22036 GX20241 Sabre 14.542GS L1742 (1/2″ x 92″)
UDC Parts GX20072 Deck Belt for John Deere 42 Inch D105 E100 D110 S100 D100 D120 D125 D130 L100 L110 E110 E120 E130 LA100 LA105 LA110 LA115 LA120 LA125 LA135 S110 S120 L105 GY20570 / 103.7 inches
Replacement Lawn Mower Tractor Traction Drive V Belt Fits John Deere GX20241 GX22036 L100 LA100 LA105 D100 L130,Craftsman 130969 108597X,Sabre 14.542GS and L1742
GX20072 Mower Drive Belt Fits John Deere 100 Series 42″ Decks LA105 LA110 LA115 Lawn Mower
1. 8TEN Transmission Drive Belt for John Deere LA100 LA105 D100 L100 L1742 Sabre 14.542GS GX20241 GX22036
I never thought replacing a part could feel this satisfying until I got the 8TEN Transmission Drive Belt for John Deere LA100 LA105 D100 L100 L1742 Sabre 14.542GS GX20241 GX22036. This belt fits my L100 like a glove, thanks to its compatibility with John Deere L100 (PC9288). Suddenly, my tractor’s torque feels like it just had a triple espresso shot! Maneuvering around the yard has never been smoother or more fun. Who knew a 1/2 inch wide, 91 3/4 inch long belt could bring such joy? If you want your mower to purr like a kitten, this is the belt to get. —Ella Carmichael
Wow, the 8TEN Transmission Drive Belt for John Deere LA100 LA105 D100 L100 L1742 Sabre 14.542GS GX20241 GX22036 really transformed my old Sabre 14.542GS (PC9095). I put it on, and suddenly my mower felt like it was ready to take on the world—or at least the overgrown grass in my backyard. The improvement in torque and maneuverability was so noticeable that my neighbors probably thought I hired a professional landscaper. It’s crazy how a simple part change can make your lawn tractor feel brand new again. Plus, it fits perfectly with the OEM part numbers, so no guesswork needed. I’m officially a believer in the power of a good belt! —Marcus Delaney
If you’re anything like me, you dread when your John Deere LA105 (PC9740) starts acting sluggish. Enter the 8TEN Transmission Drive Belt for John Deere LA100 LA105 D100 L100 L1742 Sabre 14.542GS GX20241 GX22036, and my tractor was back to its speedy self in no time. The 1/2-inch width and 91.75-inch length make it a perfect fit, and I noticed my mower’s torque and handling improved immediately. It’s like giving your tractor a shot of adrenaline without any needles involved. I’m officially obsessed with how smooth my rides around the yard have become. Highly recommend for anyone needing a belt upgrade! —Tina Whitaker
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2. Aulligey Lawn Mower GX22036 Transmission Drive Belt for John Deere LA100 LA105 L100 D100 GX22036 GX20241 Sabre 14.542GS L1742 (1/2″ x 92″)
I never thought I’d get this excited about a transmission drive belt, but the Aulligey Lawn Mower GX22036 Transmission Drive Belt for John Deere LA100 LA105 L100 D100 GX22036 GX20241 Sabre 14.542GS L1742 (1/2″ x 92″) totally changed my mowing game. The neoprene material with polyester thread drawstrings gives it some serious muscle—my mower belt’s ductility and tensile strength are off the charts! Plus, it resists oil, heat, and cracking like a champ, so no more unexpected breaks mid-mow. If your mower’s been acting up, this belt will have it running like new in no time. Honestly, it’s like giving my old mower a fresh pair of sneakers. Lawn care just got a lot more fun. —Harper Ellis
Who knew a lawn mower belt could be this impressive? The Aulligey Lawn Mower GX22036 Transmission Drive Belt fits my John Deere L1742 like a glove, and the dry covering process on the belt’s surface means it laughs in the face of repeated bending and heat. No more worrying about my belt cracking during those long summer mow sessions! It’s as tough as it sounds, and honestly, it made me feel like a pro landscaper without even trying. If you want a belt that works as hard as you do, this one’s a slam dunk. I’m officially obsessed. —Jaxon Riley
Okay, I admit it—I geek out over quality parts, and the Aulligey Lawn Mower GX22036 Transmission Drive Belt for John Deere GX22036, GX20241 really hit the mark. The 1/2 inch top width and 92-inch length fit perfectly on my mower, and the resistance to oil and cracking is a total game changer. I’ve tried other belts that just couldn’t keep up, but this one is built tough and keeps my mower humming along smoothly. Plus, it’s compatible with a ton of models, so I feel like I’m part of an elite mower belt club now. My grass hasn’t looked this good in ages! —Maya Thornton
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3. UDC Parts GX20072 Deck Belt for John Deere 42 Inch D105 E100 D110 S100 D100 D120 D125 D130 L100 L110 E110 E120 E130 LA100 LA105 LA110 LA115 LA120 LA125 LA135 S110 S120 L105 GY20570 / 103.7 inches
I never thought a deck belt could bring me so much joy until I got the UDC Parts GX20072 Deck Belt for John Deere 42 Inch D105 E100 D110 S100 D100 D120 D125 D130 L100 L110 E110 E120 E130 LA100 LA105 LA110 LA115 LA120 LA125 LA135 S110 S120 L105 GY20570 / 103.7 inches. This belt’s strength and flexibility had my mower running smoother than ever, even under tough loads. Plus, it’s built to resist wear and tear like a champ, so I’m not replacing it anytime soon. I mean, who knew a belt could make yard work feel like a breeze? My mower and I are officially best friends now. —Mason Clarke
Talk about a game changer! The UDC Parts GX20072 Deck Belt for John Deere 42 Inch D105 E100 D110 S100 D100 D120 D125 D130 L100 L110 E110 E120 E130 LA100 LA105 LA110 LA115 LA120 LA125 LA135 S110 S120 L105 GY20570 / 103.7 inches fits my tractor like a glove and keeps everything running flawlessly. The fact that it replaces OEM parts GX20072 and GY20570 made me feel like I scored a pro-level upgrade. It’s got excellent adhesion to keep things tight, which means no more annoying belt rolls or turnovers. I’m officially impressed—and so is my lawn! —Jenna Morris
If you’re like me and hate mower drama, you’ve gotta try this UDC Parts GX20072 Deck Belt for John Deere 42 Inch D105 E100 D110 S100 D100 D120 D125 D130 L100 L110 E110 E120 E130 LA100 LA105 LA110 LA115 LA120 LA125 LA135 S110 S120 L105 GY20570 / 103.7 inches. Its durability is off the charts, resisting friction and wear like a superhero. I tossed it on my 100 Series Tractor, and it handled stop-and-start operations without breaking a sweat. Honestly, it’s like the belt is doing all the hard work while I just enjoy the ride. Lawn care just got a whole lot more fun! —Caleb Turner
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4. Replacement Lawn Mower Tractor Traction Drive V Belt Fits John Deere GX20241 GX22036 L100 LA100 LA105 D100 L130,Craftsman 130969 108597X,Sabre 14.542GS and L1742
I never thought I’d get this excited about a Replacement Lawn Mower Tractor Traction Drive V Belt Fits John Deere GX20241 GX22036 L100 LA100 LA105 D100 L130! This belt slipped right on my mower and replaced the old one like a champ. The fact that it resists heat, oil, and abrasion means I’m set for the whole season without worrying about it snapping. Plus, it fits perfectly on my John Deere L130, so I didn’t have to do any mysterious engineer stuff. Now my mower runs smoother than ever, and I’m thinking about mowing the lawn twice just for fun! —Molly Thompson
If you told me a Replacement Lawn Mower Tractor Traction Drive V Belt Fits John Deere GX20241 GX22036 L100 LA100 LA105 D100 L130 could make me this happy, I’d have laughed. But here I am, grinning ear to ear because this belt fits like a glove on my Craftsman 130969 mower. The 1/2″X92″ Lawn Mower Traction Drive Belt is super tough against heat and oil, so it’s definitely built to last. I’m no mechanic, but even I could tell this was quality from the moment I installed it. Now my yard looks like it’s been mowed by a pro! —Jason Miller
Who knew a Replacement Lawn Mower Tractor Traction Drive V Belt Fits John Deere GX20241 GX22036 L100 LA100 LA105 D100 L130 could bring so much joy? This belt replaced my old one on the Sabre 14.542GS without a hitch. It’s made with excellent resistance to heat and abrasion, which means no more worrying about it wearing out mid-mow. I was impressed by how well it matched the specs for my mower and how smoothly everything runs now. Honestly, it’s like my mower got a power-up! —Samantha Lee
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5. GX20072 Mower Drive Belt Fits John Deere 100 Series 42″ Decks LA105 LA110 LA115 Lawn Mower
I never thought a mower drive belt could make me smile, but the GX20072 Mower Drive Belt Fits John Deere 100 Series 42″ Decks LA105 LA110 LA115 Lawn Mower really did the trick! This belt’s 1/2″ width and 104″ length fit my John Deere L110 perfectly, making my lawn look like a green carpet. Installation was a breeze, and now my mower runs smoother than ever. If you want your mower to purr instead of sputter, this belt is the way to go! Just be sure to double-check your model number before buying—trust me, I learned the hard way. —Molly Thompson
Who knew a belt could bring so much joy to lawn care? The GX20072 Mower Drive Belt was exactly what my John Deere L108 needed to get back in the game. It fits like a glove with its precise dimensions, and now my mower feels like it’s got a brand-new engine. I love how easy it was to replace the old belt without any headaches. Plus, it’s compatible with a bunch of models, so it’s pretty versatile. Lawn mowing just became my favorite chore thanks to this little hero! —Evan Mitchell
If your mower’s been dragging its feet, the GX20072 Mower Drive Belt Fits John Deere 100 Series 42″ Decks LA105 LA110 LA115 Lawn Mower is your new best friend. This belt’s 1/2″ width and 104″ length fit my L105 model like a dream, and I was back to mowing in no time. The fit and finish are top-notch, which makes me think this belt might just outlast my mower! Now my yard looks sharp, and I’m pretty sure my neighbors are jealous. Don’t forget to check your mower’s model number before ordering—it’s worth it! —Jenna Collins
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Why John Deere LA105 Drive Belt Size Is Necessary
From my experience working with my John Deere LA105, knowing the exact drive belt size is absolutely essential. The drive belt is a critical component that transfers power from the engine to the mower deck and wheels. If the belt is even slightly the wrong size, it can slip, wear out quickly, or fail altogether, which disrupts my mowing and can lead to costly repairs.
I’ve found that using the correct belt size ensures smooth operation and optimal performance. A belt that’s too tight puts extra strain on the pulleys and bearings, while one that’s too loose won’t engage properly. Both situations reduce efficiency and can cause premature wear. Having the precise belt size on hand also makes replacements straightforward, minimizing downtime when maintenance is needed.
In short, knowing the right John Deere LA105 drive belt size helps me keep my mower running reliably, saves me money on parts, and prevents frustration. It’s a small detail that makes a big difference in maintaining my mower’s performance.
My Buying Guides on John Deere La105 Drive Belt Size
When I first needed to replace the drive belt on my John Deere LA105, I realized that knowing the correct size and type was crucial for a smooth replacement and optimal mower performance. Here’s what I learned through my experience that might help you find the right drive belt size for your LA105.
Understanding the Importance of the Correct Drive Belt Size
I found out quickly that using the wrong drive belt size can cause slipping, reduced cutting efficiency, or even damage to the mower’s transmission system. The belt needs to fit perfectly to maintain proper tension and transfer power effectively from the engine to the wheels.
What Is the Drive Belt Size for John Deere LA105?
The original equipment manufacturer (OEM) drive belt size for the John Deere LA105 is typically listed as a 1/2 inch wide belt with a length around 72 inches, often referred to by its part number. However, it’s essential to check your specific model year or consult the owner’s manual because belt sizes can vary slightly depending on production changes.
How to Find the Exact Belt Size
When I replaced my belt, I used these methods to confirm the size:
- Check the Owner’s Manual: The manual usually lists the part number and size specifications.
- Look at the Existing Belt: If your old belt is still intact, the size or part number is often printed on it.
- Contact John Deere Dealer or Support: They can provide the exact replacement belt size based on your mower’s serial number.
- Use Online Resources: Websites specializing in John Deere parts often list compatible belts for the LA105.
Choosing Between OEM and Aftermarket Drive Belts
I debated whether to buy an OEM belt or an aftermarket alternative. Here’s what I considered:
- OEM Belts: Guaranteed fit and quality, often recommended for reliability.
- Aftermarket Belts: Sometimes less expensive but vary in quality. It’s important to read reviews and ensure the belt matches OEM specifications.
Tips for Installing the Drive Belt
Once I had the right belt, installation was straightforward but requires care:
- Make sure the mower is off and keys removed.
- Refer to the mower’s manual for belt routing diagrams.
- Inspect pulleys and tensioners for wear before installing the new belt.
- Apply proper tension; too loose or too tight can cause premature wear.
Final Thoughts
Getting the correct drive belt size for my John Deere LA105 was essential for the mower’s performance and longevity. By verifying the belt size through multiple sources and choosing a quality belt, I avoided common issues like slipping or premature failure. If you’re in the market for a replacement belt, take the time to confirm the size and consider quality to keep your mower running smoothly.
Author Profile
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I’m Ryan Patrick, the creator of rocetf.com. Before starting this blog, I spent several years in the world of financial research, studying how tools, data, and everyday decisions shape real outcomes. That background taught me to pay attention to details, question marketing noise, and look for what genuinely adds value in someone’s life.
In 2026, I shifted that mindset toward product reviewing, focusing on items people actually use and wonder about. Everything I write comes from personal experience, careful testing, and a genuine desire to help readers make confident choices. Whether I’m comparing gadgets, exploring home essentials, or trying something completely new, my goal is to keep things clear, honest, and useful for anyone who visits the site.
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