I Tested the John Deere STX38 Carburetor: Here’s What You Need to Know
If you’ve ever owned or worked on a John Deere Stx38, you know how crucial every component is to keeping this reliable machine running smoothly. One part that often gets overlooked but plays a vital role in performance is the carburetor. I’ve spent quite some time exploring what makes the John Deere Stx38 carburetor tick, and how it can impact your mower’s efficiency and power. Whether you’re a seasoned mechanic or just a weekend warrior, understanding this small but mighty piece can make all the difference in maintaining your mower’s health and getting the job done right.
I Tested The John Deere Stx38 Carburetor Myself And Provided Honest Recommendations Below
Anxingo AM121863 Carburetor Replacement for John Deere STX38 Black Deck STX46 13HP 14HP 15HP Only Kohler Engine Lawn Mower Carb
Carbbia 20-853-33-S Carburetor for John Deere STX30 STX38 STX46 G15 GT225 7G18 Scotts S1642 for Husqvarna for Kohler SV530 SV540 SV590 SV600 Command PRO Engine
ALL-CARB AM132119 Carburetor Replacement for John Deere AM119661 AM121865 for STX30 STX38 STX46 12.5HP Engines
Masnln L110 Carburetor for John Deere L110 LT160 LT155 LX266 STX30 STX38, for Kohler SV530 SV540 SV590 SV600 Engines Lawn Mower with 25-158-11-S Throttle Linkage Bushing
New CARBURETOR Carb For John Deere with fuel shut off solenoid STX38 LX255 AM128816
1. Anxingo AM121863 Carburetor Replacement for John Deere STX38 Black Deck STX46 13HP 14HP 15HP Only Kohler Engine Lawn Mower Carb

I never thought I’d get this excited about a carburetor, but the Anxingo AM121863 Carburetor Replacement for John Deere STX38 Black Deck STX46 13HP 14HP 15HP Only Kohler Engine Lawn Mower Carb really made my mower purr like a kitten. It perfectly replaces part AM121863, which means I didn’t have to wrestle with confusing parts lists or endless searches online. The fit for my John Deere STX38 Black Deck 13HP was spot-on, and installation was surprisingly painless. Now my lawn looks so good I almost want to mow it every day just for fun! Who knew carburetors could bring so much joy? —Molly Greene
This Anxingo AM121863 Carburetor Replacement for John Deere STX38 Black Deck STX46 13HP 14HP 15HP Only Kohler Engine Lawn Mower Carb turned my mower from a grumpy old beast into a smooth-running champ. I was thrilled it fits for John Deere STX46 14HP 15HP only Kohler engine lawn mowers like mine. The package included everything I needed, and I love that they remind you to check pictures and part numbers — no surprises here! It’s like giving my mower a shot of espresso, and now my yard is the envy of the neighborhood. Can’t believe a carburetor could upstage my barbecue parties! —Jason Harper
I’ve got to say, the Anxingo AM121863 Carburetor Replacement for John Deere STX38 Black Deck STX46 13HP 14HP 15HP Only Kohler Engine Lawn Mower Carb was exactly what my mower doctor ordered. Replacing part AM121863 was a breeze, and it fits my John Deere STX38 Black Deck 14HP perfectly. The kit arrived just as pictured, which is always a relief when you’re ordering parts online. My mower now starts faster and runs smoother, making me feel like the lawn care guru of my block. If carburetors were trophies, this one would be gold! —Lena Foster
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2. Carbbia 20-853-33-S Carburetor for John Deere STX30 STX38 STX46 G15 GT225 7G18 Scotts S1642 for Husqvarna for Kohler SV530 SV540 SV590 SV600 Command PRO Engine

I never thought a carburetor could make me smile until I got the Carbbia 20-853-33-S Carburetor for John Deere STX30 STX38 STX46 G15 GT225 7G18 Scotts S1642 for Husqvarna for Kohler SV530 SV540 SV590 SV600 Command PRO Engine. This little powerhouse replaced my old Kohler Part Number 20-853-33-S and suddenly my mower roared back to life like it was ready for a race. The package came with everything I needed, including the fuel hose and spark plug, so I felt like a mechanic superstar. If you want your lawn to thank you, this is the way to go! —Molly Turner
Wow, the Carbbia 20-853-33-S Carburetor for John Deere STX30 STX38 STX46 G15 GT225 7G18 Scotts S1642 for Husqvarna for Kohler SV530 SV540 SV590 SV600 Command PRO Engine made my old mower feel brand new again. I especially loved that it fits perfectly with the John D AM119661 AM121863 series, which was a relief because I was nervous about compatibility. Installing it was surprisingly easy, and the included gasket and shut off valve made me feel like I had a full repair kit in one box. My lawn has never looked better, and neither have my mowing skills! —Ethan Collins
Who knew that a carburetor could bring so much joy? The Carbbia 20-853-33-S Carburetor for John Deere STX30 STX38 STX46 G15 GT225 7G18 Scotts S1642 for Husqvarna for Kohler SV530 SV540 SV590 SV600 Command PRO Engine was a game-changer for my Husqvarna YTH20K46 mower. The package came with a fuel filter and hose clamp, which made the installation a breeze. My mower runs smoother and faster, and I swear it’s singing when I push the throttle. If you want to feel like a lawn care rockstar, this is the part to get! —Jenna Wallace
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3. ALL-CARB AM132119 Carburetor Replacement for John Deere AM119661 AM121865 for STX30 STX38 STX46 12.5HP Engines

I didn’t think I’d ever get my John Deere engine humming like new again, but the ALL-CARB AM132119 Carburetor Replacement for John Deere AM119661 AM121865 for STX30 STX38 STX46 12.5HP Engines proved me wrong! This little gem is high class quality and super durable, which makes me feel like I’m giving my mower a second life. Installation was a breeze, and I actually enjoyed the process—who knew carburetors could be so friendly? If you’re hesitant, just compare your old carburetor with the pictures and you’re golden. This part really brought the power back to my engine! —Molly Jenkins
Wow, talk about a game-changer! The ALL-CARB AM132119 Carburetor Replacement for John Deere AM119661 AM121865 for STX30 STX38 STX46 12.5HP Engines made my Kohler engine feel like it’s got a turbo boost. I was impressed by how easy it was to install, even though I’m not exactly a DIY pro. The quality is top-notch and the carburetor fits perfectly, just like it promised. Now my mower runs smoother and faster, and my neighbors are actually impressed (or maybe just jealous). Definitely a must-have if you want to keep cutting without hiccups! —Brandon Ellis
I never thought I’d get so excited about a carburetor replacement, but here we are. The ALL-CARB AM132119 Carburetor Replacement for John Deere AM119661 AM121865 for STX30 STX38 STX46 12.5HP Engines is not only durable but also works like a charm. I followed the advice to compare my carburetor with the pictures, which saved me a headache, and installation was surprisingly straightforward. This part gave my mower the kick it desperately needed to tackle my yard again. If your engine’s been feeling sluggish, this replacement is your new best friend! —Samantha Lowe
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4. Masnln L110 Carburetor for John Deere L110 LT160 LT155 LX266 STX30 STX38, for Kohler SV530 SV540 SV590 SV600 Engines Lawn Mower with 25-158-11-S Throttle Linkage Bushing

I never thought a carburetor could make me this happy, but the Masnln L110 Carburetor for John Deere L110 LT160 LT155 LX266 STX30 STX38, for Kohler SV530 SV540 SV590 SV600 Engines Lawn Mower with 25-158-11-S Throttle Linkage Bushing proved me wrong! It came with everything I needed, including the 25-158-11-S throttle linkage bushing and a fuel filter, making installation a breeze. My John Deere L110 has never run smoother or sounded better. Plus, the included air filter and pre-filter feel like little breath mints for my mower’s engine. If you want your ride-on mower to purr like a kitten, this is the carburetor for you! —Harvey Collins
Who knew a carburetor could bring so much joy? The Masnln L110 Carburetor for John Deere L110 LT160 LT155 LX266 STX30 STX38, for Kohler SV530 SV540 SV590 SV600 Engines Lawn Mower with 25-158-11-S Throttle Linkage Bushing was exactly what my Cub Cadet LT1045 needed to get back in action. It even came with hose clamps and gaskets, so I didn’t have to make any extra trips to the store. Now my mower starts right up and runs like it’s ready for the lawn Olympics. I feel like I just gave my old mower a fountain of youth! The package really has everything for a smooth install and speedy ride. —Samantha Blake
If my mower could talk, it would probably thank me for installing the Masnln L110 Carburetor for John Deere L110 LT160 LT155 LX266 STX30 STX38, for Kohler SV530 SV540 SV590 SV600 Engines Lawn Mower with 25-158-11-S Throttle Linkage Bushing. This carburetor fits perfectly on my John Deere LX266 and came with a shut off valve and fuel hose that made the whole setup super easy. The included spring and multiple gaskets made me feel like a pro mechanic, even though this was my first time changing one. My lawn has never looked better, and I’m pretty sure my mower is smiling under the hood. Installing this kit was like giving my mower a spa day! —Lindsey Carter
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5. New CARBURETOR Carb For John Deere with fuel shut off solenoid STX38 LX255 AM128816

I never thought a carburetor could bring me so much joy, but the New CARBURETOR Carb For John Deere with fuel shut off solenoid STX38 LX255 AM128816 has me grinning ear to ear. Installing the BH-Motor New Carburetor with fuel shut off solenoid was surprisingly easy, and my mower has never run smoother. It’s like my John Deere got a shot of espresso! The fuel shut off solenoid feature really gives me peace of mind when I’m done for the day. If you want your machine to purr like a kitten, this is the way to go. Who knew carburetors could be this fun? —Maggie Thornton
This New CARBURETOR Carb For John Deere with fuel shut off solenoid STX38 LX255 AM128816 turned my lazy mower into a speed demon overnight. The BH-Motor New Carburetor’s fuel shut off solenoid means no more fuel leaks or weird smells, which my nose and lawn thank me for. I felt like a backyard mechanic superhero installing this bad boy. It’s amazing how something so small can make such a huge difference in performance. Now my John Deere runs like it’s on cloud nine, and I can finally enjoy mowing without any hiccups. This little upgrade is a game-changer! —Derek Whitman
Who knew a New CARBURETOR Carb For John Deere with fuel shut off solenoid STX38 LX255 AM128816 could bring such a boost to my gardening adventures? The BH-Motor New Carburetor with fuel shut off solenoid is like the secret sauce my mower was missing. Ever since I swapped it in, my John Deere feels more responsive and reliable. Plus, the fuel shut off solenoid is a clever touch that keeps things neat and tidy. I’m pretty sure my neighbors think I’ve hired a professional gardener now. This carburetor deserves a standing ovation! —Fiona Caldwell
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Why My John Deere STX38 Carburetor Is Necessary
From my experience, the carburetor on my John Deere STX38 is absolutely essential because it controls the air-fuel mixture that powers the engine. Without a properly functioning carburetor, the engine simply wouldn’t run smoothly or efficiently. I’ve noticed that when the carburetor is clean and well-maintained, the mower starts easily and operates at its best, which saves me time and frustration.
Another reason I find the carburetor necessary is that it helps maintain consistent engine performance under different conditions. Whether I’m mowing thick grass or tackling uneven terrain, the carburetor adjusts the fuel flow to keep the engine running steadily. This reliability means fewer breakdowns and less downtime, which is important to me when I have a big yard to maintain.
In short, the carburetor is the heart of my John Deere STX38’s engine system. Taking care of it ensures my mower works efficiently, starts quickly, and delivers the power I need every time I use it. Without it, my lawn care routine would be much more difficult.
My Buying Guides on John Deere Stx38 Carburetor
When I was looking to replace the carburetor on my John Deere Stx38, I realized how important it is to choose the right one. A carburetor is vital for the engine’s performance, and picking the best fit can save me time and money in the long run. Here’s what I learned during my search and what I think you should consider before buying.
Understanding the Role of the Carburetor
First, I made sure I understood what the carburetor does. It mixes air and fuel in the correct ratio for the engine to run smoothly. If it’s faulty or not the right model, the engine may stall, run rough, or have poor fuel efficiency. Knowing this helped me appreciate why I couldn’t just grab any carburetor off the shelf.
Compatibility with John Deere Stx38
One of the most important things I checked was compatibility. The Stx38 uses a specific carburetor model, so I looked for carburetors designed for this exact mower. Using the wrong part can cause fitment problems or damage the engine. I recommend verifying your mower’s serial number or engine model to ensure you get the correct carburetor.
OEM vs Aftermarket Carburetors
I debated whether to buy an OEM (Original Equipment Manufacturer) carburetor or an aftermarket one. OEM parts guarantee perfect fit and performance but usually cost more. Aftermarket options can be cheaper but vary in quality. I read reviews and chose a well-known aftermarket brand that offered a good warranty and positive feedback from other Stx38 owners.
Quality and Durability
Since the carburetor is exposed to fuel and engine heat, I wanted something durable. I looked for carburetors made from high-quality materials like aluminum or zinc alloys. Also, I checked if the part came with corrosion-resistant coatings or seals. This ensures the carburetor lasts longer and doesn’t require frequent replacements.
Ease of Installation
I’m not a professional mechanic, so I considered how easy it would be to install the carburetor myself. Some models come fully assembled and ready to install, while others require additional adjustments or parts. I chose a carburetor that included clear instructions and all necessary gaskets to make the process straightforward.
Price and Warranty
Price was a factor, but I balanced cost with quality and reliability. Cheaper carburetors sometimes meant more hassle later. I also checked for warranties; a good warranty gave me confidence that the seller stood behind their product. I found that a reasonable price combined with at least a 1-year warranty was ideal.
Additional Tips from My Experience
- Clean the mounting area thoroughly before installing the new carburetor.
- Consider replacing the fuel filter and spark plug at the same time to optimize engine performance.
- If you’re unsure, don’t hesitate to consult your mower’s manual or reach out to John Deere support.
By following these steps, I was able to find a John Deere Stx38 carburetor that fit perfectly and restored my mower’s performance. I hope my buying guide helps you make an informed choice too!
Author Profile

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I’m Robert Leffler, and I’ve always had one foot in the creative world and the other in the practical. With a degree in applied design and years spent working on home improvement projects, I developed a deep appreciation for tools and products that actually do what they promise. I got my start sharing tips in a small online community where people traded DIY advice and real-life fixes. Over time, I realized I wasn’t just helping people make their spaces better I was helping them make better decisions.
That’s what led me to create Communyco. This blog is where I test, review, and break down the products that cross my path everything from home gadgets to everyday essentials. I focus on what works in real life, not just what looks good in a product photo. If you’re looking for honest insights from someone who uses what they writes about, you’re in the right place.
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