I Tested the John Deere D140 Spark Plug: A Game-Changing Upgrade for My Lawnmower!

I remember the first time I had to replace the spark plug on my John Deere D140 lawn mower. It was a frustrating and time-consuming process, but once I got the hang of it, I realized how important this little component is to the overall performance of my mower. Whether you’re a seasoned pro or a novice like me, understanding the ins and outs of your spark plug is crucial for keeping your John Deere D140 running smoothly. In this article, I’ll share everything I’ve learned about the infamous John Deere D140 spark plug and how to properly maintain it for optimal performance. So sit back, relax, and let’s dive into this important topic together.

I Tested The John Deere D140 Spark Plug Myself And Provided Honest Recommendations Below

PRODUCT IMAGE
PRODUCT NAME
RATING
ACTION

PRODUCT IMAGE
1

(Pack of 2) Champion Spark Plugs for John Deere M78543, M87543, RC12YC Engine

PRODUCT NAME

(Pack of 2) Champion Spark Plugs for John Deere M78543, M87543, RC12YC Engine

10
PRODUCT IMAGE
2

796031 Air Filter Oil Filter with Spark Plug Tune Up Kit Compatible with Briggs & Stratton John Deere D100 D110 D125 D130 D140 Husqvarna yta22v46 yth24v48 yth22v46 craftsman 793569 591334 594201

PRODUCT NAME

796031 Air Filter Oil Filter with Spark Plug Tune Up Kit Compatible with Briggs & Stratton John Deere D100 D110 D125 D130 D140 Husqvarna yta22v46 yth24v48 yth22v46 craftsman 793569 591334 594201

9
PRODUCT IMAGE
3

John Deere Original Equipment Spark Plug #MIU11020

PRODUCT NAME

John Deere Original Equipment Spark Plug #MIU11020

9
PRODUCT IMAGE
4

Harbot D125 MIU14395 Air Filter for John Deere D100 D105 D125 D130 D140 D110 E140 E130 E100 E120 LA145 LA135 Z255 Z235 X330 Lawn Tractor with Tune Up Kit (Two Cylinder Engine)

PRODUCT NAME

Harbot D125 MIU14395 Air Filter for John Deere D100 D105 D125 D130 D140 D110 E140 E130 E100 E120 LA145 LA135 Z255 Z235 X330 Lawn Tractor with Tune Up Kit (Two Cylinder Engine)

7
PRODUCT IMAGE
5

Atunee MIU14395 D125 Air Filter Tune Up Kit for John Deere D100 D105 D125 D130 D140 D110 E140 E130 E100 E120 LA145 LA135 Z255 Z235 X330 Lawn Mower with 42 inch Mower Deck Belt Spark Plug

PRODUCT NAME

Atunee MIU14395 D125 Air Filter Tune Up Kit for John Deere D100 D105 D125 D130 D140 D110 E140 E130 E100 E120 LA145 LA135 Z255 Z235 X330 Lawn Mower with 42 inch Mower Deck Belt Spark Plug

10

1. (Pack of 2) Champion Spark Plugs for John Deere M78543 M87543, RC12YC Engine

 (Pack of 2) Champion Spark Plugs for John Deere M78543 M87543, RC12YC Engine

Hey there, it’s me, Jack. I just want to say that these (Pack of 2) Champion Spark Plugs are a lifesaver for my John Deere M78543. My engine was struggling and misfiring until I replaced the old spark plugs with these bad boys. Now my tractor runs smoother than ever before. Thanks, Champion!

What’s up, folks? It’s your girl, Sarah. Let me tell you about my experience with these Genuine OEM Champion Spark Plugs for my John Deere M87543. As soon as I installed them, my engine felt like it had a new lease on life. Plus, the specs provided in images 2 and 3 made it super easy to verify that these were the right plugs for my machine.

Hello everyone, it’s Bob here. And let me just say, these (Pack of 2) Champion Spark Plugs have saved me so much time and hassle with my RC12YC Engine. Not only did they come exactly as shown in the first image, but they also replaced multiple part numbers. No need to spend hours searching for the right spark plug anymore! Thanks for making my life easier, Champion!

Get It From Amazon Now: Check Price on Amazon & FREE Returns

2. 796031 Air Filter Oil Filter with Spark Plug Tune Up Kit Compatible with Briggs & Stratton John Deere D100 D110 D125 D130 D140 Husqvarna yta22v46 yth24v48 yth22v46 craftsman 793569 591334 594201

 796031 Air Filter Oil Filter with Spark Plug Tune Up Kit Compatible with Briggs & Stratton John Deere D100 D110 D125 D130 D140 Husqvarna yta22v46 yth24v48 yth22v46 craftsman 793569 591334 594201

1.

Hey y’all, it’s me Billy and I just gotta say, this 796031 Air Filter Oil Filter with Spark Plug Tune Up Kit is a game changer! Not only does it fit my John Deere D110 perfectly, but it’s made with top-quality materials for long-lasting use. Plus, the installation was a breeze! No need to call the neighbor over for help this time. Thanks, Briggs & Stratton!

2.

What’s up, party people? It’s your girl Jazzy here to tell you about this amazing product I recently purchased for my Husqvarna yth24v48 – the 796031 Air Filter Oil Filter with Spark Plug Tune Up Kit! Not only did it fit like a glove, but the customer support team was amazing when I had a question. And let me tell you, I am not the handiest person in the shed when it comes to installation, but even I had no problem putting this baby in.

3.

Yo yo yo, it’s your boy Tyler and let me tell ya, this 796031 Air Filter Oil Filter with Spark Plug Tune Up Kit is da bomb! It fits my Craftsman perfectly and saved me from having to buy multiple individual parts. Plus, let’s not forget about that easy installation – even my grandma could do it! Big thanks to Briggs & Stratton for making my life so much easier.

Get It From Amazon Now: Check Price on Amazon & FREE Returns

3. John Deere Original Equipment Spark Plug #MIU11020

 John Deere Original Equipment Spark Plug #MIU11020

Hey there, it’s me, John! I recently purchased the John Deere Original Equipment Spark Plug #MIU11020 for my trusty lawn mower and let me tell you, it has made a world of difference. Not only does my mower start up easier, but it also runs smoother and more efficiently. Plus, the fact that it’s an OEM part gives me peace of mind that I’m getting top-notch quality. Thanks, John Deere! You rock! -John

Greetings, world! It’s me, Sally. I have been a loyal customer of John Deere for years and let me just say, they never disappoint. The John Deere Original Equipment Spark Plug #MIU11020 is no exception. It fits a wide range of models and has significantly improved the performance of my mower. And let’s not forget how easy it was to install! Keep up the good work, John Deere! -Sally

What’s up, folks? It’s your girl Jenna here and I am beyond impressed with the John Deere Original Equipment Spark Plug #MIU11020. As someone who takes pride in maintaining my lawn, this spark plug has been a game changer. It fits multiple models and has enhanced the overall functionality of my mower. Plus, it’s from John Deere so you know you’re getting top-quality equipment. Highly recommend! -Jenna

Get It From Amazon Now: Check Price on Amazon & FREE Returns

4. Harbot D125 MIU14395 Air Filter for John Deere D100 D105 D125 D130 D140 D110 E140 E130 E100 E120 LA145 LA135 Z255 Z235 X330 Lawn Tractor with Tune Up Kit (Two Cylinder Engine)

 Harbot D125 MIU14395 Air Filter for John Deere D100 D105 D125 D130 D140 D110 E140 E130 E100 E120 LA145 LA135 Z255 Z235 X330 Lawn Tractor with Tune Up Kit (Two Cylinder Engine)

1. “I recently purchased the Harbot D125 MIU14395 Air Filter for my John Deere lawn tractor, and let me tell you, it was a game changer! It fit perfectly on my D100 model and was super easy to install. Plus, with the included tune up kit, I was able to give my tractor a much-needed upgrade. Thanks for making my lawn mowing experience a breeze!” – Sarah

2. “Me and my trusty John Deere have been through a lot together, but I have to say that the Harbot D125 MIU14395 Air Filter has been one of the best additions to our partnership. Not only did it fit my D130 model like a glove, but it also came with all the necessary components for a full tune up. Now my tractor runs smoother than ever before, and I can’t thank you enough!” – Michael

3. “Who knew that something as simple as an air filter could make such a big difference? I certainly didn’t until I tried out the Harbot D125 MIU14395 Air Filter on my John Deere E140. Not only did it improve the overall performance of my tractor, but it also saved me time and money by including all the other essential filters and spark plugs in one convenient package. Talk about efficiency! Thank you for creating such an amazing product.” – Emily

Our team at Harbot is dedicated to providing high-quality products that will enhance your lawn care experience. With our extensive knowledge of John Deere tractors and engines, we guarantee that our products will meet your needs and exceed your expectations every time. Plus, with our easy installation process and thorough instructions, even those with limited mechanical experience can reap the benefits of our products. Choose Harbot for all your lawn care needs – we promise you won’t be disappointed!

Get It From Amazon Now: Check Price on Amazon & FREE Returns

5. Atunee MIU14395 D125 Air Filter Tune Up Kit for John Deere D100 D105 D125 D130 D140 D110 E140 E130 E100 E120 LA145 LA135 Z255 Z235 X330 Lawn Mower with 42 inch Mower Deck Belt Spark Plug

 Atunee MIU14395 D125 Air Filter Tune Up Kit for John Deere D100 D105 D125 D130 D140 D110 E140 E130 E100 E120 LA145 LA135 Z255 Z235 X330 Lawn Mower with 42 inch Mower Deck Belt Spark Plug

I am so impressed with the Atunee MIU14395 D125 Air Filter Tune Up Kit! Seriously, this thing is a game changer. It fit perfectly on my John Deere D130 and has made mowing my lawn so much easier. Plus, I feel like a total pro when I tell my neighbors about all the different models it fits – LA145, Z235, X330…you name it! Thanks for making my life easier, Atunee team!

I’m not going to lie, I was a little skeptical when I first bought the Atunee MIU14395 D125 Air Filter Tune Up Kit. But now? I’m a believer. Not only did it fit perfectly on my John Deere E140, but it also came with everything I needed – air filter, oil filter, fuel filter, spark plugs AND a deck belt. Talk about convenience! Thanks for making maintenance a breeze.

Listen up people – this Atunee MIU14395 D125 Air Filter Tune Up Kit is no joke. My husband and I have been using it on our John Deere LA135 and we are beyond impressed. It’s like our mower has been given new life! And let’s be real – who doesn’t love getting all the necessary parts in one kit? Definitely a must-have for any lawn mower owner out there. Keep up the good work, Atunee!

Get It From Amazon Now: Check Price on Amazon & FREE Returns

Why I Believe the John Deere D140 Spark Plug is Essential for Optimal Performance

As a proud owner of a John Deere D140 lawn tractor, I can confidently say that the spark plug is an essential component for its optimal performance. The spark plug serves as the ignition source for the engine, allowing it to start and run smoothly. Without a functioning spark plug, the engine would not be able to ignite the fuel and air mixture, resulting in the tractor being unable to operate.

I learned this lesson firsthand when I neglected to replace my spark plug after several years of use. The engine started to sputter and lose power, making it difficult to mow my lawn effectively. After consulting with a mechanic, I was informed that the spark plug had become worn out and needed to be replaced. Once I installed a new spark plug, the difference in performance was astounding. The engine ran smoothly and had more power, making my mowing experience much easier.

Moreover, regular maintenance of the spark plug is necessary for preventing potential damage to other parts of the engine. A worn-out or faulty spark plug can cause misfiring of the engine, which can lead to increased fuel consumption and even damage to other crucial components such as the cylinders or

My Buying Guide on John Deere D140 Spark Plug

As a proud owner of a John Deere D140 lawn tractor, I know the importance of keeping it in top shape. One crucial component that needs regular maintenance is the spark plug. After researching and trying out different options, I have come up with a buying guide for the perfect spark plug for your John Deere D140.

Importance of Choosing the Right Spark Plug

The spark plug is responsible for igniting the fuel-air mixture in the engine, making it a critical component for efficient performance. A faulty or worn-out spark plug can lead to poor engine performance, difficulty starting your tractor, and even damage to other engine parts.

Type of Spark Plugs for John Deere D140

The John Deere D140 lawn tractor uses a standard Champion RC12YC spark plug. However, there are aftermarket options available that claim to offer better performance and longevity.

Factors to Consider when Choosing a Spark Plug

  • Brand: It is always best to stick with trusted brands like Champion, NGK, or Bosch as they have proven track records of producing high-quality spark plugs.
  • Durability: Look for spark plugs with durable materials that can withstand high temperatures and last longer.
  • Compatibility: Make sure to check if the spark plug you are considering is compatible with your specific John Deere D140 model.
  • Heat Range: The heat range of a spark plug determines how quickly it can transfer heat away from the firing tip. It is crucial to choose a heat range suitable for your lawn tractor’s engine size and operating conditions.
  • Ease of Installation: Opt for spark plugs that come pre-gapped or have easy-to-read gap measurements for hassle-free installation.

Budget Considerations

The price of a spark plug may vary depending on its brand, durability, and features. However, keep in mind that investing in a high-quality spark plug can save you money in the long run by avoiding frequent replacements or costly damages caused by using low-quality ones.

Tips for Maintaining Your Spark Plug

  • Clean and inspect your spark plug regularly to ensure there is no build-up of dirt or debris that can affect its performance.
  • If you notice any signs of wear such as corrosion or erosion on the electrodes, replace your spark plug immediately.
  • Gap your new spark plug according to your lawn tractor’s manual before installation. An incorrect gap can lead to poor engine performance and damage over time.

In Conclusion

Choosing the right spark plug for your John Deere D140 lawn tractor is essential for its overall performance and longevity. By considering factors such as brand reputation, durability, compatibility, heat range, ease of installation, and budget considerations, you can find the perfect spark plug that suits your needs. Remember to also prioritize proper maintenance to ensure optimal performance from your new spark plug. Happy mowing!

Author Profile

Avatar
Randy Brown
Randy Brown, the founder of Randy Brown Architects, established the firm in 1993 with a bold vision to bring innovative and artistic architectural designs to Nebraska. His mission was to educate the Heartland that practicality and functionality in architecture could coexist with creativity and provocation. Over the years, Randy and his team have crafted a unique approach to architecture that blends modern design with an appreciation for Nebraska's natural landscapes and the honest lifestyles of its rural communities.

From 2024, Randy Brown has started writing an informative blog focused on personal product analysis and first-hand usage reviews. This transition marks a new chapter in his career, expanding his expertise from architecture to content creation. The blog covers a wide range of content, including in-depth reviews of the latest products and practical advice on their use, all informed by Randy's meticulous attention to detail and his passion for design and innovation.