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DEF Ignition Coil for Stihl MS311 MS391 MS311Z MS391Z Chainsaw Replaces 1140 400 1303 1140 1305 B
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DEF Ignition Coil for Stihl MS311 MS391 MS311Z MS391Z Chainsaw Replaces 1140 400 1303 1140 1305 B
Increase Ignition energy intensity for easy starting and smoothing riding
DEF Ignition Coil for Stihl MS311 MS391 MS311Z MS391Z Chainsaw Replaces 1140 400 1303 1140 1305 B
DEF

Item #: 46294838

DEF Ignition Coil for Stihl MS311 MS391 MS311Z MS391Z Chainsaw Replaces 1140 400 1303 1140 1305 B

Item #: 46294838

MWK 69337

Price Details

Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )

*All items will import from US

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Order now and get it around Sunday, July 12
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Increase Ignition energy intensity for easy starting and smoothing riding
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What Stands Out

Precision Fit
The DEF Ignition Coil is specifically designed for Stihl MS311 and MS391 chainsaws, ensuring a perfect match for optimal performance and reliability in demanding cutting tasks.
Durable Construction
Built with high-quality materials, this ignition coil withstands tough conditions, providing longevity and reducing the need for frequent replacements, ultimately saving you time and money.
Enhanced Performance
This coil replaces OEM parts 1140 400 1303 and 1140 1305 B, boosting ignition efficiency to deliver improved acceleration and smoother operation for your chainsaw, ensuring you get the job done faster.

Product Details

Upgrade your Stihl chainsaw with the reliable and durable DEF Ignition Coil. Replaces 1140 400 1303 and 1140 1305 B. Shop now at Ubuy Malawi!
Item Weight0.5 lbs (230 grams)

Who Should Buy?

Suitable For
  • Regular Users

    Ideal for chainsaw enthusiasts who frequently use Stihl models for cutting tasks, ensuring optimal performance and reliability.

  • Repair Technicians

    Suited for mechanics specializing in Stihl products, providing necessary parts for efficient repairs and maintenance services.

  • DIY Homeowners

    Great for homeowners needing reliable tools for yard maintenance, ensuring their chainsaw operates smoothly for various gardening tasks.

Not Suitable For
  • Rare Users

    Not ideal for infrequent users or occasional hobbyists who may not need a replacement ignition coil often.

  • Non-Stihl Models

    Incompatible with other brands or models outside the Stihl MS series; users should ensure compatibility before purchasing.

  • Budget Shoppers

    Might not suit shoppers looking for the cheapest option, as it is a specific product that may be priced higher.

Product Description

DEF Ignition Coil for Stihl MS311 MS391 MS311Z MS391Z Chainsaw Replaces 1140 400 1303 1140 1305 B

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What are the compatible models for the DEF Ignition Coil?

    Answer: The DEF Ignition Coil is specifically designed for use with Stihl chainsaw models MS311, MS391, MS311Z, and MS391Z. This compatibility ensures optimal performance and functionality when replacing your old coil. Each of these models has unique features, but they all share similar ignition requirements, making this part a perfect match. If you are experiencing difficulties starting your chainsaw or notice a decrease in power, replacing the ignition coil could resolve these issues.
  • Question: What symptoms indicate that I need to replace the ignition coil?

    Answer: Common symptoms signaling the need for an ignition coil replacement include difficulty starting the chainsaw, stuttering while running, or unexpected stalling during operation. These issues typically arise when the ignition coil fails to generate sufficient spark for combustion. If you notice these behaviors, it's advisable to inspect the ignition coil as part of your troubleshooting process. A new ignition coil can restore your chainsaw’s performance and reliability, ensuring efficient cutting and operation.
  • Question: How does the ignition coil work in a chainsaw?

    Answer: The ignition coil in a chainsaw serves to transform the battery’s low voltage into a high voltage needed to create a spark at the spark plug, igniting the fuel-air mixture in the combustion chamber. When the ignition coil malfunctions, it can lead to weak or inconsistent sparks, resulting in hard starting or engine misfires. Understanding its role is crucial for maintaining your chainsaw. Regular checks of this component can prevent larger problems and ensure smooth operation during heavy use.
  • Question: Can I install the DEF Ignition Coil myself?

    Answer: Yes, you can install the DEF Ignition Coil by yourself if you have basic mechanical skills and the necessary tools. The process typically involves removing the air cover, disconnecting the spark plug wire, and replacing the old coil with the new one. Clear guidance in the user manual for your specific chainsaw will provide further details. Doing this task on your own can save time and money while allowing you to better understand your equipment, enhancing your DIY abilities.
  • Question: What is the importance of using a high-quality ignition coil like DEF?

    Answer: Using a high-quality ignition coil, such as the DEF model, is essential for ensuring reliable ignition and efficient operation of your Stihl chainsaw. Quality coils are built to withstand the demands of high-performance engines, providing consistent spark generation. This results in better fuel efficiency, longer operational life, and reduced wear on the engine components. Investing in top-tier replacement parts can lead to superior performance and longevity of your chainsaw, cutting down on future maintenance costs.
  • Question: What should I check before purchasing an ignition coil?

    Answer: Before purchasing an ignition coil, ensure that it is compatible with your specific Stihl chainsaw model. Check the part numbers, such as 1140 400 1303 or 1140 1305 B, as these indicate the exact specifications needed. Additionally, consider inspecting your current ignition coil for signs of wear or damage to confirm that replacement is necessary. By performing these checks, you can confidently choose the right part, ensuring optimal performance and reliability from your chainsaw.
  • Question: Is the DEF Ignition Coil resistant to harsh operating conditions?

    Answer: Yes, the DEF Ignition Coil is designed to perform reliably under harsh operating conditions commonly faced by chainsaw users. Built with robust materials, this coil resists heat and vibration, which are typical during extensive use. Such durability helps maintain consistent ignition performance even in tough environments, making it a suitable choice for those who rely on their chainsaws for demanding tasks. This reliability ensures that you can tackle various cutting tasks without worrying about engine performance failure.
  • Question: How does replacing the ignition coil affect fuel efficiency?

    Answer: Replacing a worn or faulty ignition coil with a new DEF Ignition Coil can significantly enhance your chainsaw's fuel efficiency. An effective ignition coil ensures that the fuel-air mixture ignites completely, resulting in a more efficient combustion process. When the engine runs smoothly and consistently, it requires less fuel to operate, allowing you to complete tasks without unnecessary refueling. Thus, investing in a quality ignition coil not only improves performance but also helps in conserving fuel during operation.
  • Question: What is the expected lifespan of an ignition coil?

    Answer: The expected lifespan of an ignition coil can vary depending on usage and maintenance but generally ranges from several years to several hundred hours of operation. Factors such as engine conditions, maintenance practices, and environmental exposure can impact its longevity. Regular inspections can help identify signs of wear or damage early on, prompting timely replacements. Keeping track of usage patterns and conditions is essential to ensuring your chainsaw remains in optimal working condition for as long as possible.
  • Question: Where can I buy DEF Ignition Coil for Stihl chainsaws in Malawi?

    Answer: You can purchase the DEF Ignition Coil for Stihl MS311, MS391, MS311Z, and MS391Z chainsaws from Ubuy in Malawi. Ubuy is a trusted e-commerce platform, offering a wide range of products, including specialized parts for outdoor equipment. By shopping at Ubuy, you can access competitive options and reliable customer service, ensuring your chainsaw remains operational and efficient.

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“The product received very good packaging & safe…Thank You”

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“Accurate delivery timing given”

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“The process was smooth, with clear communication and timelines. This was my 1st purchase and I am really impressed. I will definitely be coming back.”

12 June 2026 · via Trustpilot
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MWK 69337

Order now and get it around Sunday, July 12

QTY:

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Features & Benefits

  • Direct replacement for Stihl MS311 MS391 MS311Z MS391Z Chainsaw
  • Easy to install and reuse
  • Improves combustion efficiency
  • Provides higher intensity spark with faster recovery and response
  • 100% guarantee within 30 days of purchase
  • Contact for any after-sales support

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