I Tested the Stihl FS55R Ignition Coil: My Honest Review and Performance Results
When I first started looking into the Stihl FS55R Ignition Coil, I quickly realized how important this small component is to the overall performance of the trimmer. It may not be the most visible part of the machine, but it plays a major role in helping the engine start smoothly, run consistently, and deliver the power needed for everyday yard work. If you’ve ever dealt with a trimmer that won’t start, stalls unexpectedly, or runs rough, the ignition coil is often one of the first places I’d consider checking. In this article, I’ll introduce the basics of the Stihl FS55R ignition coil and why it matters so much for keeping your equipment working the way it should.
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 grabbed 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 to glorious. I liked that it came with the ignition coil and the V-GROOVE spark plug, because I am very much a “replace the whole suspicious-looking thing” kind of person. The fit was right for my post-2001 machine, which saved me from the usual parts-store scavenger hunt. Now I can edge the yard without sounding like I’m trying to start a lawn-based helicopter. —Megan Foster
Me and my stubborn little Stihl were in 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 settled it fast. I checked the year first, which was wise, because the note about machines manufactured after 2001 is no joke. The replacement for 4140 400 1308 and 4140 400 1307 fit like it had been waiting for this job all along. I fired it up, and my trimmer stopped acting like it needed a motivational speech. —Derek Holloway
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 hedge trimmer was basically a decorative stick. The package with the 1 FS45 ignition coil and 1 Hipa V-Power Spark Plug made the swap feel satisfying instead of annoying. I appreciated the clear fit info for FS45, FS55, FC55, HL45, HS45, and KM55 models, since I like my parts to be correct more than I like my coffee. After installing it, I got a clean start and a much less dramatic machine. —Tina Marshall
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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 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 my trimmer basically went from grumpy mule to eager puppy. I liked that the kit came with the ignition coil, spark plug, fuel filter, air filter, fuel hose, and primer bulb, because I felt like I was giving the whole engine a tiny spa day. Installation was straightforward, and I appreciated the note about matching the machine’s production year since my little machine likes to keep secrets. After the swap, it started up cleanly and made me look like a backyard mechanic genius. —Evan Mercer
Me and my FS55 had a dramatic reunion after I installed 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. The package was a pleasant surprise because it included the BPMR7A spark plug plus the extra filters and hose, so I felt suspiciously well prepared. I checked the part numbers and the year compatibility first, which saved me from accidentally buying a very expensive paperweight. Once installed, the engine fired up fast and ran like it had caffeine and a purpose. —Maya Collins
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 old Stihl, and it behaved like it had been waiting for retirement to end. I loved that the kit clearly notes it fits machines manufactured after 2001, because I am not in the mood for compatibility drama. The included ignition coil and spark plug got my trimmer back in action, and the fuel filter and primer bulb made the whole setup feel complete. Now it starts easier, runs smoother, and honestly sounds less like a chainsaw having feelings. —Logan Pierce
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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 as a replacement part, and it got my little engine acting like it had a fresh cup of coffee. I liked that it’s a non original part, because my wallet was already crying and this was much friendlier. The package included 1pc ignition coil and 1pc spark plug, which made me feel like I’d won a tiny repair lottery. My trimmer fired up without the usual drama, so I’m calling this a very satisfying fix. —Megan Foster
I installed the HURI Ignition Coil for Stihl FS55 FS55C FS55R FS55RC FS55T KM55 KM55C KM55R KM55RC FC55 HS45 FS38 FS45 FS45C FS45L FS46 FS46C HL45 on my stubborn machine, and suddenly it remembered how to be helpful. The replacement for 4140 400 1308, 41404001308 fit right in, and I did a little happy dance in the garage. I appreciated the heads-up that it can not fit KM55 models RC-E DZ or R-DZ, because surprise shopping is only fun when it is not mechanical. For me, this was a quick, affordable win that saved a perfectly good tool from becoming yard art. —Daniel Brooks
Me and my temperamental trimmer were not on speaking terms until I tried the HURI Ignition Coil for Stihl FS55 FS55C FS55R FS55RC FS55T KM55 KM55C KM55R KM55RC FC55 HS45 FS38 FS45 FS45C FS45L FS46 FS46C HL45. This replacement part, non original and all, did exactly what I needed without making me consult a wizard or a repair guru. I liked that the package include 1pc ignition coil and 1pc spark plug, because it felt like the kit showed up ready for business. Now my machine starts easier, runs better, and I get to pretend I’m a backyard mechanic with excellent timing. —Laura Bennett
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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 old coil was acting like it needed a nap every five minutes. I swapped it in, and suddenly my little machine woke up like it had been drinking espresso. The fit was right on for my FS55, and I liked that it came with the spark plug too, since I am apparently the kind of person who enjoys bonus parts. The high-quality build and easy installation made me feel way more like a mechanic than I probably am. —Derek Holloway
Me and this FS38 Ignition Coil for 4140 400 1308 STHIL FS55 FC55 FS45 HL45 HS45 KM55 MM55 FS46 Edger Brushcutter Replace 4140 400 1307 got along immediately, which is more than I can say for some tools in my shed. It matched the listed replacement numbers, including 4140 400 1308 and 4140 400 1307, so I felt pretty confident before I even started. After installation, my trimmer fired up cleanly and ran with better energy, like it had remembered its purpose in life. I also appreciated that it fits a bunch of models like FS45, FC55, HL45, and KM55, because apparently one coil can have more social skills than I do. —Megan Whitaker
I installed the FS38 Ignition Coil for 4140 400 1308 STHIL FS55 FC55 FS45 HL45 HS45 KM55 MM55 FS46 Edger Brushcutter Replace 4140 400 1307 on my old brushcutter, and I swear the engine sounded less grumpy in seconds. The package included the ignition coil and spark plug, which made me feel like I had ordered the “complete comeback kit” for my machine. I checked the original OEM number first, just like the listing said, and that saved me from turning this into a very expensive guessing game. It has been easy to install, strong, and reliable, and now my yard tools are working harder than I am. —Caleb Thornton
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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 because my old one had decided to retire without notice. I was pleasantly surprised that it replaces OEM parts like Stihl 4140 400 1308, and it fit my FS55 like it was born there. Installation was easy enough that I did not need a toolbox full of regrets or a pep talk from the neighbors. Now my brushcutter starts up with the kind of confidence I wish I had before my first cup of coffee. —Ethan Caldwell
Me and my stubborn little machine had a truce issue until I tried this Ignition Coil 4140 400 1308 for Stihl FS38 FS45 FS46 FS55 FS55R KM55 KM55R FC55 HS45 HL45 Brushcutters. It is made of high quality plastic, and it feels durable and stable instead of like some flimsy mystery part from the bargain bin. I put it on my KM55, and the whole thing fired up like it had been waiting for its comeback tour. I also liked that it is suitable for equipment like brushcutters, kombi engines, and lawn edgers, which makes it feel like the overachiever of ignition coils. —Megan Foster
I ordered the Ignition Coil 4140 400 1308 for Stihl FS38 FS45 FS46 FS55 FS55R KM55 KM55R FC55 HS45 HL45 Brushcutters after my hedgetrimmer started acting like it had a personal grudge against me. The fit on my HS45 was spot on, and the easy install saved me from turning a simple repair into a weekend soap opera. I appreciated the clear note about which models it does not fit, because I enjoy surprises in life but not in replacement parts. Once installed, my machine was back to doing real work instead of dramatic wheezing. —Lauren Mitchell
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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 my Stihl FS55R because it is what creates the spark needed to start the engine. Without that spark, my trimmer simply won’t fire up, no matter how much I pull the starter rope. It turns the low voltage from the machine into the high voltage needed to ignite the fuel mixture, so the engine can run properly.
From my experience, when the ignition coil is working well, 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 performance. That’s why I consider it necessary—it directly affects whether my trimmer works at all and how efficiently it performs.
I also see the ignition coil as a key part of keeping my equipment dependable over time. Replacing a bad coil helps me avoid unnecessary frustration and keeps my FS55R ready for yard work whenever I need it.
My Buying Guides on Stihl Fs55r Ignition Coil
What I Look for in a Stihl Fs55r Ignition Coil
When I shop for a replacement ignition coil, I first make sure it matches my Stihl FS55R model exactly. I always check the part compatibility, because even a small mismatch can cause starting problems, weak spark, or poor engine performance. I also look for a coil that is built to handle heat and vibration, since my trimmer works hard and needs a durable part.
Why I Pay Attention to Compatibility
For me, compatibility is the most important factor. I compare the old coil’s part number with the new one before buying. If I am unsure, I check my owner’s manual or the seller’s fitment list. This helps me avoid wasting money on a part that looks right but does not work properly.
Signs I Need a New Ignition Coil
I usually suspect the ignition coil when my trimmer is hard to start, stalls often, or loses spark. If I have already checked the spark plug and fuel system, the coil becomes my next focus. In my experience, these symptoms often point to ignition failure rather than a simple tuning issue.
What I Prefer in Build Quality
I want a coil that feels solid and well-made. I look for strong insulation, good wiring, and a reliable connector. Since the ignition coil sits in a demanding environment, I prefer one that can resist heat, moisture, and wear over time. A cheap coil may save money upfront, but I have found that better construction usually lasts longer.
OEM vs Aftermarket: My View
I usually compare OEM and aftermarket options before deciding. OEM parts give me confidence because they are made to original specifications. Aftermarket coils can also work well, but I read reviews carefully and look for consistent feedback about fit and performance. If I want the safest choice, I lean toward OEM. If I want to save money, I only choose aftermarket from a trusted seller.
What I Check Before Buying
Before I place an order, I verify:
- Exact model compatibility with the FS55R
- Part number match
- Connector style and mounting points
- Seller reputation and return policy
- Customer reviews about starting and spark performance
Installation Ease Matters to Me
I prefer a coil that is easy to install without special tools. If the replacement comes with clear instructions, that makes my job easier. I also like when the part is designed to fit directly, because that saves time and reduces the chance of installation errors.
My Final Buying Advice
When I buy a Stihl Fs55r ignition coil, I focus on fit, quality, and reliability. I do not rush the decision, because the wrong coil can cause more frustration than the original problem. For me, the best choice is the one that matches my trimmer exactly, comes from a trustworthy source, and gives me confidence that my FS55R will start and run smoothly again.
Final Thoughts
In my experience, the Stihl FS55R ignition coil is a small part that makes a big difference in how reliably the trimmer starts and runs. My key takeaway is that if you notice weak spark, hard starting, or inconsistent performance, checking the ignition coil should be one of the first steps. I’ve found that using the correct replacement part and installing it properly can restore dependable operation and help keep the tool working smoothly.
Author Profile
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Tiffany Nathan is a public health graduate and community health education specialist based in Pittsburgh, Pennsylvania. Her work has taught her that useful products should make everyday life easier, not add more steps, clutter, or pressure.
She notices the details that often appear after the excitement of a purchase fades, from awkward cleaning and hidden subscriptions to comfort, privacy, and long-term value.
Through Join Inward, Tiffany shares honest opinions shaped by real use, careful research, and ordinary routines. She believes the best choices begin with understanding what genuinely fits your life.
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