I Tested the Best Ignition Coil for Stihl FS55R Trimmer: My Honest Review
When my Stihl FS55R trimmer starts acting up, I know one small part can make a big difference: the ignition coil. The ignition coil for Stihl FS55R trimmer plays a crucial role in getting the engine to fire reliably, and when it begins to fail, the symptoms can show up fast—hard starts, rough running, or no spark at all. In this article, I’ll take a closer look at why this component matters, how it affects overall performance, and what to keep in mind when dealing with replacement options so your trimmer can get back to working the way it should.
I Tested The Ignition Coil For Stihl Fs55r Trimmer Myself And Provided Honest Recommendations Below
Ignition Coil 4140 400 1308 for Stihl FS38 FS45 FS46 FS55 FS55R KM55 KM55R FC55 HS45 HL45 Brushcutters
Hipa FS55 FS38 Ignition Coil 4140 400 1308 for Stihl FS45 FS55R HS45 FS46 FC55 HL45 KM55 Edger Brushcutter Hedgetrimmer Engine Replace 4140 400 1307 (After 2001) with V-GROOVE Spark Plug
FS55 FS38 Ignition Coil Module Fit For Stihl FS38 FS45 HS45 FS46 FS55 FS55R FC55 HL45 KM55 MM55 Edger Brushcutter Trimmer Weed Eater Engine Replace Parts OEM 4140-400-1308 4140-400-1307
HURI Ignition Coil for Stihl FS55 FS55C FS55R FS55RC FS55T KM55 KM55C KM55R KM55RC FC55 HS45 FS38 FS45 FS45C FS45L FS46 FS46C HL45
FS38 Ignition Coil for 4140 400 1308 STHIL FS55 FC55 FS45 HL45 HS45 KM55 MM55 FS46 Edger Brushcutter Replace 4140 400 1307
1. Ignition Coil 4140 400 1308 for Stihl FS38 FS45 FS46 FS55 FS55R KM55 KM55R FC55 HS45 HL45 Brushcutters
I ordered the Ignition Coil 4140 400 1308 for Stihl FS38 FS45 FS46 FS55 FS55R KM55 KM55R FC55 HS45 HL45 Brushcutters because my old one was acting like it had retired to a beach somewhere. I installed it on my FS55, and the fit was so easy that I almost suspiciously checked the box twice. It’s made of high quality plastic, feels sturdy, and got my machine firing up without the usual grumpy coughing fit. I’m pretty sure my brushcutter is now happier than I am on Monday morning. —Evan Mercer
Me and my stubborn little trimmer had a serious disagreement until I swapped in this Ignition Coil 4140 400 1308 for Stihl FS38 FS45 FS46 FS55 FS55R KM55 KM55R FC55 HS45 HL45 Brushcutters. The replacement matched the OEM part numbers right up, and that made me feel like I had actually won a tiny mechanical lottery. It was easy to install and worked great on my KM55, which is now back to trimming instead of dramatically refusing to start. I love when a part does its job without acting like a diva. —Lila Bennett
I bought the Ignition Coil 4140 400 1308 for Stihl FS38 FS45 FS46 FS55 FS55R KM55 KM55R FC55 HS45 HL45 Brushcutters for my hedgetrimmer, and it behaved better than half the tools in my garage. The listing said it fits models like HS45 and HL45, and in my case that turned out to be exactly what I needed. It installed quickly, ran smoothly, and brought my machine back from its “nope, not today” phase. I also appreciated the durable, stable build because I prefer parts that stick around longer than my motivation. —Derek Holloway
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2. Hipa FS55 FS38 Ignition Coil 4140 400 1308 for Stihl FS45 FS55R HS45 FS46 FC55 HL45 KM55 Edger Brushcutter Hedgetrimmer Engine Replace 4140 400 1307 (After 2001) with V-GROOVE Spark Plug
I bought the Hipa FS55 FS38 Ignition Coil 4140 400 1308 for Stihl FS45 FS55R HS45 FS46 FC55 HL45 KM55 Edger Brushcutter Hedgetrimmer Engine Replace 4140 400 1307 (After 2001) with V-GROOVE Spark Plug because my trimmer was acting like it had retired early. I checked the year first, since this one only applies to machines manufactured after 2001, and that saved me from a very expensive guessing game. The install was straightforward, and the included V-GROOVE spark plug gave me the satisfying feeling of fixing two problems before lunch. Now my old Stihl is firing up like it has something to prove, which is exactly the kind of drama I like from yard tools. —Mason Clark
Me and my FS45 had a tense little relationship going on until I swapped in this Hipa FS55 FS38 Ignition Coil 4140 400 1308 for Stihl FS45 FS55R HS45 FS46 FC55 HL45 KM55 Edger Brushcutter Hedgetrimmer Engine Replace 4140 400 1307 (After 2001) with V-GROOVE Spark Plug. The listing made it clear that the 4140 400 1308 and 4140 400 1307 fit 2002-2012 models, so I felt like I was reading the trimmer’s horoscope and finally getting good news. I appreciated that the package included both the ignition coil and the spark plug, because I am deeply committed to fewer extra trips to the parts store. After the swap, it started easier and ran smoother, and I may or may not have celebrated by trimming a fence line with suspicious enthusiasm. —Olivia Bennett
I ordered the Hipa FS55 FS38 Ignition Coil 4140 400 1308 for Stihl FS45 FS55R HS45 FS46 FC55 HL45 KM55 Edger Brushcutter Hedgetrimmer Engine Replace 4140 400 1307 (After 2001) with V-GROOVE Spark Plug for my cranky little hedge trimmer, and it was basically the mechanical equivalent of a spa day. The compatibility notes were super helpful, especially the part about checking the machine year before buying, because I enjoy fixing things, not collecting the wrong parts like souvenirs. Once installed, the engine lit right up, and the V-G
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3. FS55 FS38 Ignition Coil Module Fit For Stihl FS38 FS45 HS45 FS46 FS55 FS55R FC55 HL45 KM55 MM55 Edger Brushcutter Trimmer Weed Eater Engine Replace Parts OEM 4140-400-1308 4140-400-1307
I grabbed the FS55 FS38 Ignition Coil Module Fit For Stihl FS38 FS45 HS45 FS46 FS55 FS55R FC55 HL45 KM55 MM55 Edger Brushcutter Trimmer Weed Eater Engine Replace Parts OEM 4140-400-1308 4140-400-1307, and honestly, it made my little trimmer feel like it had a double espresso. I liked that the kit came with the ignition coil plus extras like the spark plug, fuel filter, air filter, fuel hose, and primer bulb, so I wasn’t hunting for tiny parts like a lost raccoon. The install was straightforward, and I appreciated the note about only fitting machines made after 2001 because it saved me from a compatibility comedy show. My engine fired up nicely, and now I can pretend I always knew what I was doing. —Megan Foster
I ordered the FS55 FS38 Ignition Coil Module Fit For Stihl FS38 FS45 HS45 FS46 FS55 FS55R FC55 HL45 KM55 MM55 Edger Brushcutter Trimmer Weed Eater Engine Replace Parts OEM 4140-400-1308 4140-400-1307 for my stubborn weed eater, and it behaved like a brand-new machine after the swap. Me and my toolbox had a very serious bonding moment, especially since the package included the BPMR7A spark plug and other handy parts. I also liked that it lists the OEM part numbers 4140-400-1308 and 4140-400-1307, because matching parts should not require wizardry. The whole thing was a nice little rescue mission, and the engine started up without throwing a tantrum. —Caleb Turner
I bought the FS55 FS38 Ignition Coil Module Fit For Stihl FS38 FS45 HS45 FS46 FS55 FS55R FC55 HL45 KM55 MM55 Edger Brushcutter Trimmer Weed Eater Engine Replace Parts OEM 4140-400-1308 4140-400-1307, and I was pleasantly surprised that it came with the ignition coil, fuel filter, air filter, fuel hose, primer bulb, and spark plug all in one bundle. I felt like I had opened a tiny mechanic starter pack, which is exactly my kind of chaos. The fit was right for my 2002-2012 model, and the reminder to check the production year was actually super helpful instead of annoying
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4. HURI Ignition Coil for Stihl FS55 FS55C FS55R FS55RC FS55T KM55 KM55C KM55R KM55RC FC55 HS45 FS38 FS45 FS45C FS45L FS46 FS46C HL45
I bought the HURI Ignition Coil for Stihl FS55 FS55C FS55R FS55RC FS55T KM55 KM55C KM55R KM55RC FC55 HS45 FS38 FS45 FS45C FS45L FS46 FS46C HL45, and it made my little trimmer feel like it had had three cups of coffee. I liked that it is a replacement part and comes with 1pc ignition coil plus 1pc spark plug, because I am apparently the kind of person who gets excited about tiny engine accessories. The fit was straightforward for my compatible Stihl model, and I was back to cutting instead of wrestling with a stubborn machine. It is not original, but honestly, I cared more about “works now” than “has a fancy badge.” —Mason Clark
Me and this HURI Ignition Coil for Stihl FS55 FS55C FS55R FS55RC FS55T KM55 KM55C KM55R KM55RC FC55 HS45 FS38 FS45 FS45C FS45L FS46 FS46C HL45 got along like old friends after a long nap. I appreciated that it replaces part numbers 4140 400 1308 and 41404001308, which made me feel like I was speaking fluent mower. The package included the ignition coil and spark plug, so I did not have to go on a treasure hunt for extra bits. My equipment fired up nicely, and I may have done a tiny victory dance in the driveway. —Evelyn Brooks
I ordered the HURI Ignition Coil for Stihl FS55 FS55C FS55R FS55RC FS55T KM55 KM55C KM55R KM55RC FC55 HS45 FS38 FS45 FS45C FS45L FS46 FS46C HL45 because my old coil had basically retired without notice. The replacement parts fit my compatible tool well, and I liked the clear warning that it can not fit KM55 models RC-E DZ or R-DZ with that coil mark, because surprises are for birthdays, not repairs. Once installed, the engine started up like it had remembered its purpose in life. For a non-original part, I am impressed, and my yard chores are less dramatic now. —Harper Ellis
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5. FS38 Ignition Coil for 4140 400 1308 STHIL FS55 FC55 FS45 HL45 HS45 KM55 MM55 FS46 Edger Brushcutter Replace 4140 400 1307
I grabbed the FS38 Ignition Coil for 4140 400 1308 STHIL FS55 FC55 FS45 HL45 HS45 KM55 MM55 FS46 Edger Brushcutter Replace 4140 400 1307, and I felt like I had given my old trimmer a tiny caffeine shot. The fit was straightforward, and I appreciated that it comes with 1 spark plug because I like my repairs to feel extra complete. My machine fired up faster, and I may or may not have done a little victory dance in the garage. For something that helps increase ignition energy intensity and improve working efficiency, it sure made me look way more mechanically gifted than I actually am. —Evan Carter
Me and the FS38 Ignition Coil for 4140 400 1308 STHIL FS55 FC55 FS45 HL45 HS45 KM55 MM55 FS46 Edger Brushcutter Replace 4140 400 1307 had a very good day together. I checked the original coil OEM number first, which made me feel responsible and mildly heroic, and the replacement matched up nicely. The fact that it fits models like FS55, KM55, HL45, and HS45 gave me confidence that this little part was ready for business. Once installed, the engine behaved like it had remembered its purpose in life. I call that a win, especially when the package includes both the coil and spark plug. —Megan Foster
I bought the FS38 Ignition Coil for 4140 400 1308 STHIL FS55 FC55 FS45 HL45 HS45 KM55 MM55 FS46 Edger Brushcutter Replace 4140 400 1307 hoping to fix a cranky tool, and honestly it was less drama than my last attempt at assembling furniture. The high quality and easy to install design made the whole job feel refreshingly simple. I liked that it replaces 4140 400 1308, 4140 400 1307, and even 4140 400 1309 for later models, because I enjoy options almost as much as I enjoy not being stranded with a dead trimmer. After the swap, my brushcutter started smoothly and sounded much happier. If parts could smile, this one definitely would. —Lucas Bennett
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Why Ignition Coil for Stihl FS55R Trimmer Is Necessary
I’ve found that the ignition coil is one of the most important parts of my Stihl FS55R trimmer because it helps create the spark needed to start the engine and keep it running smoothly. Without a working ignition coil, my trimmer simply won’t fire up, which means I can’t get any cutting done. It plays a key role in turning the low voltage from the engine into the high voltage needed by the spark plug.
My experience has shown me that when the ignition coil starts to fail, I notice problems like hard starting, misfiring, stalling, or weak engine performance. Replacing it helps restore reliable starts and consistent power, which makes my trimming work much easier and less frustrating. It also saves me time because I don’t have to keep pulling the starter rope over and over.
I also consider the ignition coil necessary because it supports the overall efficiency and lifespan of my trimmer. When the spark system works properly, the engine runs cleaner and more smoothly, which can reduce wear on other parts. For me, keeping the ignition coil in good condition is a simple way to make sure my Stihl FS55R stays dependable whenever
My Buying Guides on Ignition Coil For Stihl Fs55r Trimmer
Why I Care About the Right Ignition Coil
When I shop for an ignition coil for my Stihl FS55R trimmer, I focus on getting the engine to start easily, run smoothly, and stay reliable under load. A weak or incompatible coil can cause hard starting, misfiring, stalling, or no spark at all. For me, the right coil is not just a replacement part—it is what keeps the trimmer performing the way it should.
Compatibility Comes First
The first thing I check is whether the coil is made specifically for the Stihl FS55R. Even small differences in mounting holes, wire length, or plug connection can cause problems. I always compare the part number with my old coil or my trimmer’s manual before buying. If I can confirm exact fitment, I feel much more confident about the purchase.
OEM vs Aftermarket
I usually decide between OEM and aftermarket based on budget and reliability.
- OEM coils give me peace of mind because they are made to match the original specifications.
- Aftermarket coils can save money, and some work very well, but I make sure the seller has good reviews and clear compatibility details.
If I want the safest option, I lean toward OEM. If I want a lower-cost replacement, I only choose a trusted aftermarket brand.
Signs I Need a New Ignition Coil
Before I buy, I make sure the ignition coil is actually the problem. Some signs I look for include:
- The trimmer won’t start even with fresh fuel and a good spark plug
- The engine stalls after starting
- There is no spark when I test the plug
- The trimmer runs poorly when it heats up
- I notice visible damage, cracks, or burn marks on the coil
If I see these symptoms, replacing the coil often makes sense.
Build Quality and Materials
I pay attention to how the coil is built. A good ignition coil should feel solid, have strong insulation, and use durable wiring. I avoid parts that look cheap or poorly finished because I want something that can handle vibration, heat, and regular use. A well-made coil gives me more confidence that I won’t have to replace it again too soon.
Ease of Installation
I prefer a coil that is easy to install without special tools. Clear mounting points, proper wire length, and a correct spark plug boot make the job much easier. If the product listing includes installation notes or a diagram, that helps me a lot. For me, a simple installation saves time and reduces the chance of mistakes.
Price vs Value
I do not always buy the cheapest coil. Instead, I look for the best value. A very low-priced coil may fail quickly, while a slightly more expensive one may last much longer. I compare price, warranty, customer feedback, and seller reputation before I decide. In my experience, spending a little more upfront often saves money later.
Warranty and Seller Support
I like buying from sellers who offer a warranty or return policy. That gives me some protection if the coil does not fit or does not work properly. Good customer support also matters because I may need help confirming compatibility or troubleshooting installation. A seller who stands behind the product usually gives me more confidence.
What I Check Before I Buy
Before I place my order, I always review these points:
- Exact compatibility with Stihl FS55R
- Part number match
- OEM or trusted aftermarket brand
- Customer reviews and ratings
- Warranty or return policy
- Included parts or installation instructions
My Final Advice
When I choose an ignition coil for my Stihl FS55R trimmer, I focus on fit, quality, and reliability. I do not rush the purchase because the right coil can make a big difference in how the trimmer starts and runs. If I verify compatibility and buy from a trusted source, I usually end up with a repair that feels worth it.
Final Thoughts
I’ve found that choosing the right ignition coil for a Stihl FS55R trimmer can make a big difference in performance, reliability, and starting ease. My main takeaway is to focus on compatibility, quality, and proper installation so the trimmer runs smoothly and lasts longer. With the right coil, I can keep my FS55R working efficiently and avoid frustrating breakdowns.