STIHL 1303A Trimmer Ignition Coil 45 4140

( Brand: Stihl ), ( Manufacturer Part Number: 1303A ), ( Compatible Brand: For Stihl, Stihl Fs 45, Stihl Fs45, Stihl ), ( Power Source: Gasoline ), ( Color: Multicolor ), ( Compatible Model: Stihl Fs 45, Stihl Fs45, Stihl ), ( Material: Aluminum, Metal, Plastic, Steel ), ( Compatible Product: String Trimmer ), ( Engine Type: 2-stroke ), ( Type: Ignition Coil ), ( Capacity: Dna ), ( Assembly Required: Yes ), ( Voltage: 12 V ), ( Country Of Origin: United States )

Review STIHL Fs 45 String Trimmer Oem Ignition Coil

The **STIHL 1303A FS 45 Ignition Coil (Part #4140)** is a precision-engineered component designed exclusively for STIHL s high-performance 45cc two-stroke engines, ensuring reliable ignition and optimal power delivery for your trimmer, brush cutter, or outdoor power equipment. Crafted from high-grade materials and built to STIHL s rigorous quality standards, this ignition coil is engineered to withstand the demanding conditions of frequent use, extreme temperatures, and heavy-duty operation, making it an indispensable upgrade or replacement for maintaining peak performance. The coil features a robust, corrosion-resistant construction that protects against moisture, dust, and debris, while its advanced winding technology delivers consistent spark generation critical for smooth engine operation and fuel efficiency. Whether you re tackling dense underbrush, clearing overgrown landscapes, or performing routine yard maintenance, this coil ensures a strong, reliable spark every time, reducing misfires and prolonging the life of your STIHL engine. Its seamless compatibility with the 1303A FS 45 model guarantees a perfect fit, allowing for quick and hassle-free installation with no modifications required. By investing in this genuine STIHL part, you re not only restoring or enhancing the performance of your equipment but also ensuring long-term reliability, reduced maintenance costs, and the confidence of knowing your tools are operating at their full potential. Ideal for both professional landscapers and homeowners who demand durability and performance, the **STIHL 4140 Ignition Coil** is a testament to the brand s commitment to innovation and precision engineering.

The **Stihl 1303A FS 45 trimmer ignition coil (part #4140)** is a critical component for maintaining the performance and longevity of your Stihl FS 45 trimmer. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of buying a Stihl 1303A FS 45 Ignition Coil (4140)**

1. **OEM Quality and Reliability**

The Stihl ignition coil is designed specifically for the FS 45 trimmer, ensuring a perfect fit and optimal performance. Stihl is known for manufacturing high-quality, durable components that meet strict engineering standards, reducing the risk of compatibility issues or premature failure.

2. **Enhanced Engine Performance**

A faulty or worn ignition coil can lead to misfires, poor starting, or inconsistent power delivery. Replacing it with a new OEM coil restores proper spark generation, ensuring smooth operation, better throttle response, and consistent power output especially important for trimming dense vegetation or prolonged use.

3. **Prevents Long-Term Damage**

A failing ignition coil can cause excessive wear on other engine components, such as the spark plug, carburetor, or piston rings, due to improper combustion. Replacing it proactively avoids costly repairs to the engine or trimmer head.

4. **Easy Installation and Compatibility**

The 4140 coil is a direct replacement part, meaning it fits seamlessly into the FS 45 without modifications. Installation typically requires minimal tools (often just a screwdriver) and can be done in under 10 minutes, making it a straightforward DIY task.

5. **Extended Lifespan of the Trimmer**

By maintaining the ignition system, you reduce the likelihood of sudden breakdowns or the need for frequent tune-ups. This is particularly valuable for users who rely on their trimmer for professional work or heavy-duty tasks.

6. **Warranty Coverage**

Purchasing the coil directly from Stihl or an authorized dealer may include warranty protection, offering peace of mind in case of defects. Third-party sellers may also offer warranties, though these can vary in terms and conditions.

7. **Cost-Effective Maintenance**

While the coil is not the cheapest component to replace, it is significantly more affordable than overhauling the entire engine or replacing a damaged trimmer. Regular maintenance with genuine parts helps avoid larger expenses down the line.

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### **Cons of buying a Stihl 1303A FS 45 Ignition Coil (4140)**

1. **Higher Upfront Cost**

Compared to aftermarket or generic ignition coils, the Stihl OEM part is more expensive. For budget-conscious buyers, this may be a deterrent, especially if they are unsure whether the coil is the root cause of their trimmer s issues.

2. **Limited Availability Outside Authorized Channels**

While Stihl parts are widely available through dealers, online retailers (e.g., Amazon, Walmart, or specialty stores), or Stihl s official website, some users may struggle to find the exact part number (4140) if purchasing from untrusted sellers. Counterfeit or incompatible parts can exacerbate problems.

3. **Potential for Overkill if the Issue is Elsewhere**

If the trimmer s performance issues stem from other components (e.g., a clogged carburetor, worn spark plug, or fuel system problems), replacing the ignition coil alone may not resolve the problem. Diagnosing the root cause requires some mechanical knowledge or professional assistance.

4. **DIY Risk for Inexperienced Users**

While the installation is simple, those unfamiliar with small engine maintenance might accidentally damage the coil or other parts during removal or reinstallation. Improper handling could lead to further complications.

5. **Environmental and Disposal Concerns**

Like all electronic components, ignition coils contain materials that may require proper disposal. Users must ensure they recycle or dispose of the old coil responsibly, which may not be convenient for everyone.

6. **Market Fluctuations in Pricing**

Prices for Stihl parts can vary based on demand, supplier costs, or regional availability. Buyers should compare prices across multiple sellers to ensure they are getting a fair deal, though significant price differences may indicate counterfeit or low-quality alternatives.

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### **Conclusion**

The **Stihl 1303A FS 45 ignition coil (4140)** is a high-quality, reliable replacement part that significantly benefits the performance and longevity of your trimmer. Its advantages such as OEM compatibility, improved engine function, and preventive maintenance outweigh the minor drawbacks, particularly for users who prioritize durability and professional-grade tools. However, the higher cost and potential for misdiagnosis of symptoms may make it less appealing to casual users or those on a tight budget.

If your trimmer is experiencing misfires, difficulty starting, or inconsistent power, replacing the ignition coil is a logical and cost-effective solution. For users who are unsure whether the coil is the issue, consulting a mechanic or performing a basic diagnostic check (e.g., testing the spark plug or carburetor) is advisable.

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### **Recommendation**

- You have confirmed or strongly suspect the coil is faulty (e.g., no spark, rough idling, or failure to start).

- You value OEM quality and long-term reliability for your trimmer.

- You are comfortable performing basic maintenance or have access to a professional for installation.

- You are willing to invest in preventive maintenance to avoid more expensive repairs later.

- You are unsure whether the coil is the root cause of the problem and cannot diagnose the issue yourself.

- You are on a very tight budget and cannot afford the upfront cost, as cheaper alternatives (e.g., aftermarket coils) may not offer the same performance or longevity.

- You plan to use the trimmer infrequently, as the coil may last much longer than the expected lifespan of occasional use.

- Purchase from **authorized Stihl dealers, reputable online retailers, or Stihl s official website** to avoid counterfeit parts.

- Pair the coil replacement with a **new spark plug (e.g., Stihl 9.5 mm)** and a **carburetor cleaning or adjustment** for optimal results.

- Follow Stihl s maintenance guidelines to extend the life of the coil and other components.

For most users, the **Stihl 1303A FS 45 ignition coil (4140) is a worthwhile investment** that ensures your trimmer runs efficiently and reliably for years to come.

Details:

Our Carburetors come in many conditions, some will run some, might need a cleaning, an overhaul.

part #: 1303a prices

• $10.29-$16.99

specifications strintri:

• brand: Stihl
• mpn: 1303a
• compatible brand: For Stihl, Stihl Fs 45, Stihl Fs45, Stihl
• power source: Gasoline
• color: Multicolor
• compatible model: Stihl Fs 45, Stihl Fs45, Stihl
• material: Aluminum, Metal, Plastic, Steel
• compatible product: String Trimmer
• engine type: 2-stroke
• type: Ignition Coil
• capacity: Dna
• assembly required: Yes
• voltage: 12 V
• country of origin: United States

shipping strintri:

• type: Fixed
• cost: $5.00
• service: USPS Ground Advantage, UPS Ground Saver
• class: Standard, Economy
• transit: 2-4 Days
• carrier: USPS, UPS

general strintri:

• condition: Used
• Yard, Garden Outdoor Living > Outdoor Power Equipment > String Trimmer Parts

offer strintri:

• best offers: True
• sold: 0
• quantity: 1
• started: April 21, 2026
• availability: In Stock
• options: Ship-to-home

payments strintri:

• wallet: Apple-pay
• credit card: Discover
• other

seller strintri:

• # reviews: 10801
• rating: 99.8%
• city: Sauk Centre, Minnesota

returns strintri:

• time: 30 Days
• paid by: Seller
• method: Money back
• policy: Returns Accepted

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