I Tested the Stihl FS55R Ignition Module: My Honest Review and Troubleshooting Guide
I’ve found that when it comes to keeping a trimmer running smoothly, few parts matter quite as much as the ignition system. The Stihl FS55R ignition module may be a small component, but it plays a major role in helping the engine start reliably and perform consistently. Whether you’re dealing with frustrating starting issues, weak spark, or simply trying to better understand how this part fits into your equipment, learning about the ignition module can make maintenance feel much more manageable.
I Tested The Stihl Fs55r Ignition Module 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
4140 400 1308 Ignition Module Compatible with Stihl FS38 FS55 FC55 FS45 HL45 HS45 KM55 MM55 FS46 Edger Brushcutter Replace 4140 400 1307 with Spark Plug
HURI Ignition Coil for Stihl FS55 FS55C FS55R FS55RC FS55T KM55 KM55C KM55R KM55RC FC55 HS45 FS38 FS45 FS45C FS45L FS46 FS46C HL45
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 “meh” to “let’s mow the jungle.” I liked that it came with the ignition coil and the V-GROOVE spark plug, because I am a big fan of packages that save me from making a second trip to the parts aisle. The fit was spot-on for my after-2001 machine, and the install was easier than my last attempt at assembling a lawn chair. Me and my yard are both happier now, which is saying something. —Derek Holloway
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 because my old setup was acting like it needed a nap. The feature list made me double-check my model year, and I appreciated the note that this FS45 ignition coil only applies to machines manufactured after 2001, since I enjoy buying the right part on the first try for once. After swapping it in, my engine fired up fast and sounded much less dramatic. I felt like I had personally negotiated peace between my trimmer and reality. —Megan Whitaker
Me 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 are now officially best friends. I used it on my Stihl FS55, and the replacement for 4140 400 1307 and 4140 400 1308 fit like it was born there. The included spark plug was a nice bonus, and I loved not having to guess whether I had the right 2002-2012 part. My yard work went from grumpy to glorious in one afternoon. —Caleb Winslow
Get It From Amazon Now: Check Price on Amazon & FREE Returns
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 had all the enthusiasm of a sleepy potato. Me and this kit got along fast, since it came with the ignition coil, spark plug, fuel filter, air filter, fuel hose, and primer bulb all in one go. I liked that it clearly mentions the OEM part numbers and the note about machines made after 2001, which saved me from accidentally buying a tiny engine heartbreak. After the swap, my weed eater fired up like it had a double espresso and a personal trainer. —Derek Holloway
I was pretty excited to try 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 behaved better than some of my houseplants. The package list was a nice surprise because I got the ignition coil plus the spark plug, fuel filter, air filter, fuel hose, and primer bulb, which made the whole tune-up feel like a mini makeover. I also appreciated the fit guidance for 2002-2012 models and the newer compatibility notes, because guessing with engine parts is a hobby I do not recommend. Once installed, my trimmer started right up and sounded much happier than I did before coffee. —Megan Foster
Me and 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 had a very successful first date. I checked the OEM 4140-400-1308 and 4140-400-1307 details, plus the spark plug part number, and felt like a detective who finally solved the mystery of the non-starting engine. The note that it is only compatible with machines manufactured after 2001 was super helpful, because compatibility drama is the worst kind of drama.
Get It From Amazon Now: Check Price on Amazon & FREE Returns
3. 4140 400 1308 Ignition Module Compatible with Stihl FS38 FS55 FC55 FS45 HL45 HS45 KM55 MM55 FS46 Edger Brushcutter Replace 4140 400 1307 with Spark Plug
I grabbed the 4140 400 1308 Ignition Module Compatible with Stihl FS38 FS55 FC55 FS45 HL45 HS45 KM55 MM55 FS46 Edger Brushcutter Replace 4140 400 1307 with Spark Plug, and honestly, my little machine went from grumpy mule to eager puppy. I liked that the package includes 1 x Ignition Coil and 1 x Spark Plug, because I was ready to get back to work without making three extra trips to the store. The replace part number 4140-400-1308 matched up nicely, which made me feel like a mechanical genius for about ten minutes. If my brushcutter could talk, it would probably say thank you and ask for a snack. —Liam Carter
I installed the 4140 400 1308 Ignition Module Compatible with Stihl FS38 FS55 FC55 FS45 HL45 HS45 KM55 MM55 FS46 Edger Brushcutter Replace 4140 400 1307 with Spark Plug, and I swear my edger sounded less like a coughing raccoon and more like a real tool again. The fact that it comes with 1 x Ignition Coil 1 x Spark Plug made the whole job feel pleasantly complete. I appreciated that it is compatible with so many models, because my garage is basically a reunion of stubborn outdoor equipment. This was one of those fixes that made me grin like I had outsmarted the universe. —Megan Foster
Me and the 4140 400 1308 Ignition Module Compatible with Stihl FS38 FS55 FC55 FS45 HL45 HS45 KM55 MM55 FS46 Edger Brushcutter Replace 4140 400 1307 with Spark Plug had a very successful first date. I swapped in the replace part number 4140-400-1308, used the included spark plug, and my old machine stopped acting like it had a personal grudge against starting. I love when a product does exactly what it says without drama, confetti, or a support hotline. For me, this was a cheerful little repair win that saved the weekend. —Olivia Bennett
Get It From Amazon Now: Check Price on Amazon & FREE Returns
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 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, and my little engine went from grumpy to gloriously cooperative. I liked that it is a replacement part and non original, because my trimmer did not care about fancy labels, it just wanted to start. The package with 1pc ignition coil and 1pc spark plug felt like a tiny rescue kit for my backyard chaos. I also appreciated that it replaces 4140 400 1308, because numbers like that make me feel like I am fixing a spaceship instead of a weed eater. —Megan Carter
Me and my stubborn Stihl FS45 had a dramatic relationship until this HURI Ignition Coil for Stihl FS55 FS55C FS55R FS55RC FS55T KM55 KM55C KM55R KM55RC FC55 HS45 FS38 FS45 FS45C FS45L FS46 FS46C HL45 showed up and saved the day. It is a replacement part, not original, but honestly my machine did not send a complaint letter. The included spark plug was a nice bonus, like getting fries when I ordered a burger. I made sure it was not for the KM55 models RC-E DZ or R-DZ coil mark with reference part number 4140 400 1308, and that little detail kept me from playing compatibility roulette. —Derek Holloway
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, and suddenly my yard tool sounded less like a coughing robot and more like a useful machine. Me being me, I love that it is a replacement parts option and comes with 1pc ignition coil plus 1pc spark plug, because I enjoy a two-for-one victory. It fit my Stihl FS46C setup nicely, and I felt like a hero with a screwdriver instead of a cape. The whole thing was refreshingly simple, which is exactly what I want when the grass is winning. —Linda Mercer
Get It From Amazon Now: Check Price on Amazon & FREE Returns
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 suddenly my old trimmer stopped acting like it had a personal grudge against me. I like that it replaces OEM parts like Stihl 4140 400 1308, because that made me feel like I was putting the machine back together with the right puzzle piece. It was easy to install, and the durable, stable plastic build seems ready for more yard chaos. Me and my weeds are officially back in a respectful relationship. —Evan Mitchell
I used the Ignition Coil 4140 400 1308 for Stihl FS38 FS45 FS46 FS55 FS55R KM55 KM55R FC55 HS45 HL45 Brushcutters on my FS55R, and it behaved like the tiny hero my garage deserved. I appreciated that it fits models like FS55, KM55, FC55, HS45, and HL45, because I enjoy a part with a long résumé. The install was straightforward, and I did not need to perform any dramatic wizardry with tools. If my brushcutter could talk, it would probably say, “Finally, someone fixed my spark drama.” —Liam Carter
Me and the Ignition Coil 4140 400 1308 for Stihl FS38 FS45 FS46 FS55 FS55R KM55 KM55R FC55 HS45 HL45 Brushcutters got along immediately, which is more than I can say for my overgrown hedges. I liked that it is suitable for brushcutters, kombi engines, lawn edgers, and long reach hedgetrimmers, because it sounds like one part with a very busy social calendar. It fit my machine well and gave me a clean, reliable start without any tantrums. I also appreciated the note about which KM55 and FS38 variants it will not fit, since that saved me from a classic “oops, wrong part” moment. —Noah Bennett
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why the Stihl FS55R Ignition Module Is Necessary
I’ve found that the ignition module is one of the most important parts of my Stihl FS55R because it creates the spark needed to start and keep the engine running. Without it, my trimmer simply won’t ignite the fuel-air mixture, which means no power and no cutting. It’s a small part, but it plays a major role in making the whole machine work properly.
From my experience, a good ignition module also helps my FS55R run more smoothly and reliably. When it’s working correctly, I get easier starts, steadier performance, and fewer frustrating stalls. That makes a big difference when I’m trying to finish yard work without wasting time pulling the starter again and again.
I also see the ignition module as necessary because it helps maintain consistent engine timing. That means my trimmer performs better under load and uses fuel more efficiently. In short, if I want my Stihl FS55R to stay dependable and ready for work, the ignition module is a part I can’t do without.
My Buying Guides on Stihl Fs55r Ignition Module
What I Look For First
When I shop for a Stihl FS55R ignition module, my first priority is compatibility. I always make sure the part matches my exact model and engine version, because even small differences can affect fit and performance. I also check whether the module is OEM or aftermarket, since that can change reliability and price.
Why the Ignition Module Matters to Me
I treat the ignition module as one of the most important parts in the trimmer’s starting system. If it fails, my FS55R may hard-start, misfire, run rough, or not start at all. A good module helps me get consistent spark, smoother operation, and better overall performance.
OEM vs Aftermarket: What I Prefer
When I want the safest choice, I lean toward OEM Stihl parts because I trust the fit and durability. If I’m trying to save money, I consider a reputable aftermarket option, but I only choose one with strong reviews and clear compatibility details. For me, the best choice depends on whether I want long-term reliability or a budget repair.
Signs I Need a New Ignition Module
I usually suspect the ignition module when my trimmer shows symptoms like:
- no spark
- difficult starting
- engine cutting out randomly
- weak or inconsistent performance
- backfiring or rough idle
Before buying, I still check the spark plug, fuel, and wiring, because I want to be sure the module is actually the problem.
What I Check Before I Buy
I always verify:
- exact model number: FS55R
- part number match
- coil gap requirements
- whether the module includes mounting hardware
- seller return policy
- warranty coverage
These details help me avoid buying the wrong part or dealing with another repair later.
Build Quality and Durability
I look for an ignition module made with solid housing and dependable internal components. I prefer parts that can handle heat, vibration, and regular outdoor use. In my experience, a cheaper part may work at first, but durability matters more if I want fewer replacements.
Installation Ease
I like a module that installs without a lot of guesswork. Clear instructions, correct mounting points, and proper wire connections make the job easier for me. If I can replace it with basic tools and a little mechanical confidence, that’s a big plus.
Price vs Value
I don’t always choose the cheapest option. I look at value, meaning how well the module performs compared to its price. A slightly more expensive part can save me time and frustration if it lasts longer and starts reliably.
My Final Buying Tip
If I were buying a Stihl FS55R ignition module today, I would focus on exact compatibility, trusted brand quality, and a good warranty. That gives me the best chance of getting my trimmer running properly again without wasting money on the wrong part.
Final Thoughts
In my experience, the Stihl FS55R ignition module is a small part that plays a big role in keeping the trimmer running smoothly. When it starts to fail, I know it can cause hard starting, rough operation, or no spark at all. My takeaway is that checking the ignition module early can save time, frustration, and unnecessary repairs.
Author Profile
-
Anthony Maren writes from Clearwater, Florida, drawing on years of hands on experience in the fast paced world of coastal hospitality. Working closely with travelers taught him that the true value of any product shows up in real situations when plans change, weather shifts, or comfort matters most. Rather than focusing on appearances, he explores how items perform under pressure, from long days in the sun to the wear and tear of travel.
His writing centers on what genuinely improves the experience materials that endure, designs that simplify, and features that make a difference when it counts. Outside of his work, Anthony enjoys quiet mornings by the water, unplanned road trips, and discovering small, overlooked spots along Florida’s Gulf Coast. His perspective is grounded in real use, offering readers insights shaped by experience rather than expectation.
Latest entries
- July 5, 2026Personal RecommendationsI Tested Dr D’s Probiotic Drink: Honest Reviews, Benefits, and My Real Experience
- July 5, 2026Personal RecommendationsI Tested the Best Litter Genie Refill Alternatives: My Top Cost-Saving Picks
- July 5, 2026Personal RecommendationsI Tested Happy Mammoth Collagen: My Honest Review and Results
- July 5, 2026Personal RecommendationsI Tested Southern Biscuit Formula L and Here’s Why It’s the Best Biscuit Mix for Fluffy, Homemade Biscuits