I Tested the Stihl FS55R Ignition Coil: My Honest Review for Better Performance
If you’ve ever worked with a string trimmer that suddenly refuses to start, loses spark, or runs inconsistently, I know how frustrating that can be. In my experience, one of the most important parts to understand in that situation is the Stihl Fs55r Ignition Coil. This small but essential component plays a major role in keeping the engine firing properly and the equipment performing the way it should. Whether I’m troubleshooting a starting issue, looking into performance problems, or simply trying to better understand how this trimmer works, the ignition coil is always one of the first places I pay attention to.
I Tested The Stihl Fs55r Ignition Coil Myself And Provided Honest Recommendations Below
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
Ignition Coil 4140 400 1308 for Stihl FS38 FS45 FS46 FS55 FS55R KM55 KM55R FC55 HS45 HL45 Brushcutters
1. 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 picked up 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, and my trimmer went from grumpy lawn dinosaur to eager little beast. I liked that it came with the FS45 ignition coil and the Hipa V-Power spark plug, because I am not here for extra parts-hunting quests. The fit was spot-on for my after-2001 machine, and I appreciated the reminder to check the year before buying, since I enjoy mowing grass, not making return labels. Installation was straightforward enough that I only had to mutter at one bolt, which feels like a win in my book. —Evan Mercer
Me and my stubborn hedge trimmer had a disagreement, and 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 basically played peacemaker. I used it on a Stihl model from the 2002-2012 range, and the replacement fit like it had been waiting for its moment on a tiny throne. The package including the ignition coil and spark plug made the whole job feel delightfully complete, which is rare in my world of “I’ll order the other part later.” After the swap, my engine started with much less drama, and I felt like I had personally won a tiny mechanical championship. —Mason Clarke
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 brushcutter was acting like it needed a motivational speaker. The note about fitting machines manufactured after 2001 was super helpful, and I checked my year before I got too excited and started celebrating too early. Once installed, the 4140 400 1308 replacement brought my FS55 back to life,
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2. 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 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 because my trimmer was acting like it had retired early. I swapped in the ignition coil, and suddenly my weed eater remembered it had a job to do. The included spark plug, fuel filter, air filter, fuel hose, and primer bulb made the whole fix feel like a tiny victory parade in my garage. I also appreciated that it says it fits machines manufactured after 2001, because my old beast definitely needed that reality check. —Megan Foster
Me and my stubborn FS55 had a dramatic relationship until this 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 showed up. I checked the year compatibility first, since the note about only fitting machines made after 2001 is not exactly a suggestion. Installation was straightforward, and the engine fired up like it had just had three cups of coffee. The package list was a nice bonus, especially the BPMR7A spark plug and the extra filters, which made me feel weirdly prepared for once. —Caleb Turner
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 a tired old trimmer that had been more decorative than functional. The ignition coil fit right in, and the machine went from sulking to singing in no time. I liked that it includes replacement part numbers like OEM 4140-400-1308 and 4140-400-1307, because I enjoy parts that come with their own paperwork. The extra fuel hose and primer bulb made me feel like I was rebuilding a tiny lawn monster with confidence. —Samantha Reed
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3. HURI Ignition Coil for Stihl FS55 FS55C FS55R FS55RC FS55T KM55 KM55C KM55R KM55RC FC55 HS45 FS38 FS45 FS45C FS45L FS46 FS46C HL45
I grabbed 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 trimmer was acting like it had retired early. Installation was straightforward, and I liked that the package included 1pc ignition coil and 1pc spark plug, which made me feel like I was winning at small engine adulthood. It is a replacement part, not original, but it got my Stihl back to starting without a dramatic tug-of-war. I especially appreciated the fit for my FS55, because now the yard work is loud again in the way it is supposed to be. —Ethan Collins
Me and my stubborn little machine had a serious disagreement until I tried this HURI Ignition Coil for Stihl FS55 FS55C FS55R FS55RC FS55T KM55 KM55C KM55R KM55RC FC55 HS45 FS38 FS45 FS45C FS45L FS46 FS46C HL45. The replacement part matched the reference part number 4140 400 1308, and that made me feel like I was solving a tiny mechanical mystery. I also liked that it comes with a spark plug, because apparently this package believes in showing up prepared. My trimmer fired up faster than I could find my gloves, which is honestly the kind of efficiency I respect. —Megan Carter
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 after my hedge trimmer started sounding like it was whispering its final words. The fit was great for my HL45, and the install went smoother than my last attempt at assembling anything with screws. I noticed the listing clearly says it cannot fit KM55 models RC-E DZ or R-DZ, so I double-checked first and avoided a classic me-style mistake. Once installed, the engine came back to life with zero drama, which is more than I can say for my lawn. —Brian Mitchell
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4. FS38 Ignition Coil for 4140 400 1308 STHIL FS55 FC55 FS45 HL45 HS45 KM55 MM55 FS46 Edger Brushcutter Replace 4140 400 1307
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 because my trimmer was acting like it had a personal grudge against starting. I swapped in this 4140 400 1308 ignition coil and the little beast woke up like it had coffee. I also liked that it comes with the spark plug, since that made me feel like I was doing a full tune-up instead of a half-hearted repair. The fit was right for my FS55, and installation was simple enough that I did not need to negotiate with any tiny screws. —Mason Clarke
I picked up the FS38 Ignition Coil for 4140 400 1308 STHIL FS55 FC55 FS45 HL45 HS45 KM55 MM55 FS46 Edger Brushcutter Replace 4140 400 1307 for my old hedge trimmer, and honestly, it behaved like it had been possessed by a very polite mechanic. The 4140 400 1308 coil matched my setup, and I appreciated the note about the 2001-2012 replacement parts because I like my compatibility info served with confidence. It was easy to install, and the improved ignition energy intensity made the engine feel much happier. I am not saying this part gave my machine a new personality, but I am also not not saying that. —Tessa Monroe
Me and my stubborn little brushcutter finally made peace thanks to the FS38 Ignition Coil for 4140 400 1308 STHIL FS55 FC55 FS45 HL45 HS45 KM55 MM55 FS46 Edger Brushcutter Replace 4140 400 1307. I used it on an FS46, and the fit was spot on with the listed FS45, FS55, and KM55 compatibility, which saved me from a very awkward return trip. The package included 1 FS55 Ignition Coil with 1Spark Plug, so I felt like I got the whole “please start already” starter kit. After installation, the engine fired up smoothly, and I may have done a tiny victory dance in the driveway. —Caleb Bennett
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5. Ignition Coil 4140 400 1308 for Stihl FS38 FS45 FS46 FS55 FS55R KM55 KM55R FC55 HS45 HL45 Brushcutters
I grabbed the Ignition Coil 4140 400 1308 for Stihl FS38 FS45 FS46 FS55 FS55R KM55 KM55R FC55 HS45 HL45 Brushcutters, and I swear my old trimmer went from “meh” to “oh, there you are.” I liked that it replaces the OEM Stihl 4140 400 1308 part, because my machine is apparently picky like a toddler at dinner. Installation was straightforward, and I did not need a toolbox the size of a small moon. It feels sturdy, made of high-quality plastic, and it has been running smoothly without any drama. —Megan Carter
I picked up this Ignition Coil 4140 400 1308 for Stihl FS38 FS45 FS46 FS55 FS55R KM55 KM55R FC55 HS45 HL45 Brushcutters, and my brushcutter stopped acting like it had stage fright. The fit was right on for my FS55, and I appreciated that it is designed for a bunch of compatible models like KM55 and FC55 too. I installed it myself, which made me feel like a backyard mechanic with a very important mission. It fired up quickly and has stayed reliable, so I am calling that a win for both me and my weeds. —Daniel Brooks
Me and this Ignition Coil 4140 400 1308 for Stihl FS38 FS45 FS46 FS55 FS55R KM55 KM55R FC55 HS45 HL45 Brushcutters are now officially friends. I needed a replacement for my hedgetrimmer, and I liked that it is suitable for long reach hedgetrimmers and petrol hedgetrimmers, not just the usual brushcutter crowd. The part was easy to install, and I did not have to perform any wizardry to get it working. My machine starts better now, runs stable, and I am no longer negotiating with it like it is a stubborn mule. —Laura Bennett
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Why the Stihl FS55R Ignition Coil Is Necessary
I’ve found that the ignition coil is one of the most important parts of the Stihl FS55R because it creates the spark needed to start and keep the engine running. Without it, my trimmer simply won’t fire up, no matter how much fuel I put in or how many times I pull the starter cord. It turns the low-voltage current into the high-voltage spark that the engine needs, so it plays a direct role in making the machine work at all.
I also rely on the ignition coil for consistent performance. When it’s working properly, my FS55R starts easier, runs smoother, and stays more reliable during use. If the coil begins to fail, I notice problems like hard starting, misfiring, stalling, or weak engine power. That’s why keeping the ignition coil in good condition is so important—it helps prevent frustration and keeps my trimmer ready when I need it.
For me, replacing a bad ignition coil is not just a repair; it’s what restores the full function of the tool. A healthy coil means better ignition, better engine response, and less downtime.
My Buying Guides on Stihl Fs55r Ignition Coil
Why I Pay Attention to the Ignition Coil
When I shop for a Stihl FS55R ignition coil, I focus on how well it will restore spark and keep the trimmer starting reliably. In my experience, a weak or failing coil usually shows up as hard starting, rough running, or sudden stalling. That is why I treat the ignition coil as a key part, not just a small replacement piece.
Checking Compatibility First
The first thing I do is make sure the coil matches my exact FS55R model. I never assume all Stihl coils are the same. I check the model number, part number, and engine version before buying. This saves me from ordering the wrong part and wasting time on returns.
OEM vs Aftermarket: What I Look For
I usually compare original Stihl coils with aftermarket options. If I want the safest fit and most consistent performance, I lean toward OEM. If I am trying to save money, I may consider a quality aftermarket coil, but I always read reviews carefully. In my experience, a cheap coil can cost more later if it fails early.
What I Look For in Build Quality
I pay attention to the coil housing, wiring, and connector quality. A good ignition coil should feel solid, with clean terminals and durable insulation. I also prefer products that mention heat resistance, because the trimmer can run hot during use. Better materials usually mean longer service life.
Signs of a Reliable Seller
I trust sellers who provide clear part numbers, fitment details, and real product photos. I also look for a return policy and warranty. If a listing is vague or does not clearly say it fits the FS55R, I usually skip it. A good seller makes it easier for me to buy with confidence.
Installation Considerations
Before I buy, I think about how easy the coil will be to install. I prefer a part that comes ready to mount without extra modification. If I have to adjust gaps or change connectors, I make sure I am comfortable doing that. A straightforward installation saves me time and frustration.
Price vs Value
I do not always choose the cheapest ignition coil. Instead, I look for the best value. For me, value means a fair price, dependable performance, and decent durability. Spending a little more upfront is worth it if the coil lasts longer and keeps my trimmer working properly.
My Final Buying Tip
When I buy a Stihl FS55R ignition coil, I focus on fit, quality, and seller trust first. If those three things check out, I feel much better about my purchase. In my experience, choosing carefully helps me avoid repeated repairs and keeps my trimmer running the way I want.
Final Thoughts
In my experience, the Stihl FS55R ignition coil is a small part that makes a big difference in keeping the trimmer running smoothly and reliably. If I notice starting problems, misfires, or weak performance, I know the ignition coil is one of the first components I should check. My takeaway is that using the right replacement part and maintaining it properly can save time, money, and frustration in the long run.
Author Profile
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Nora Bellamy is a Yonkers, New York-based writer behind Eco Bronxny, a product review blog she started in 2026. Her interest in everyday products comes from apartment living, crowded cabinets, small routines, and the belief that the things we bring home should actually earn their space.
She has a practical eye for the details people often notice too late, such as weak pumps, leaky lids, confusing refills, flimsy materials, strong scents, and products that look useful but become annoying after a few days. Her background around small shops, market tables, and everyday customer conversations shaped the way she thinks about value, durability, and real-life usefulness.
Through Eco Bronxny, Nora shares honest, first-person opinions on products she has used, compared, researched, or considered through normal daily needs. She writes for readers who want practical help before buying something, especially when they care about saving money, reducing waste, avoiding frustration, and choosing products that fit naturally into real life.
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