I Tested the Stihl FS55R Ignition Module: My Honest Review, Performance Insights, and Replacement Tips
When I first started looking into the Stihl Fs55r Ignition Module, I quickly realized how much this small component can influence the overall performance of the trimmer. It may not be the most noticeable part of the machine, but it plays a crucial role in helping the engine start smoothly and run reliably. For anyone who depends on their Stihl FS55R for regular yard work, understanding this ignition module can make a real difference when problems begin to show up. In this article, I’ll take a closer look at why this part matters and what makes it such an important piece of the equipment.
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 “nope” to “let’s do this.” I liked that it came with the FS45 ignition coil plus the V-Power spark plug, because I am very much a fan of one-box fixes and fewer trips to the parts store. Me and my stubborn little Stihl finally got along again after I checked the year fitment and matched the after-2001 requirement. It fired up fast, ran smoothly, and honestly acted like it had been waiting for a pep talk. —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 coil had the energy of a sleepy potato. The replacement fit my Stihl model nicely, and I appreciated the clear note about machines manufactured after 2001, since I enjoy buying the right part on the first try. The package with 1 ignition coil and 1 spark plug made me feel like I had won a tiny engine lottery. After installation, my brushcutter started up with much less drama and a lot more confidence. —Megan Whitfield
Me and 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 had a very successful first date. I checked the compatibility for my FS55, saw the 4140 400 1308 and 4140 400 1307 replacement details, and felt weirdly proud of myself for reading the fine print like a responsible adult. The V-GROOVE spark plug was a nice bonus, and my hedgetrimmer came back to life without any grumbling. Now it starts easier, runs better
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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. Me and this little kit got to work, and the ignition coil plus spark plug had my machine firing up like it had coffee. I also liked that it came with a fuel filter, air filter, fuel hose, and primer bulb, so I felt like I was giving the whole engine a spa day. Just make sure you check the production year, because this is only compatible with machines manufactured after 2001. —Mason Clarke
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 after my old coil decided to go on strike. I was relieved to see the package list included the ignition coil, BPMR7A spark plug, fuel filter, air filter, fuel hose, and primer bulb, because I love a kit that shows up ready to party. Me and my stubborn weed eater are back in business, and now it starts without the dramatic wheezing. If your machine is a 2002-2012 model, this one is a very solid fix. —Olivia Bennett
I picked up 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 trimmer that had become a very expensive lawn ornament. The fit was right for my 2013-era machine, and I appreciated the note about matching the year so I did not accidentally play parts roulette. Me, I love when a repair comes with extras, and the fuel filter, air filter, fuel hose, and primer bulb made me feel like I won the tiny-engine lottery. It is running smoothly again, and now I am the proud owner of a brushcutter that actually cuts instead of just judging
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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 my trimmer went from grumpy lawn statue to eager little grass ninja. I liked that the package includes 1 x Ignition Coil and 1 x Spark Plug, because I enjoy fixing things without making a second trip to the parts rabbit hole. Installation was straightforward enough that I only mildly questioned my own mechanical confidence. Now it starts up with a lot less drama, which is exactly the kind of relationship I want with yard equipment. —Ethan Caldwell
I ordered this 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 because my old one was acting like it needed a coffee break every five minutes. The Replace Part Number 4140-400-1308 match made me feel like I had actually done my homework for once. I appreciated that it came with 1 x Ignition Coil and 1 x Spark Plug, since my toolbox already looks like a tiny metal avalanche. After swapping it in, my machine fired right up and sounded happier than I did on a Saturday morning. —Megan Foster
Me and my stubborn little yard tool finally made peace thanks to 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. I was relieved to see the package includes 1 x Ignition Coil 1 x Spark Plug, because I prefer my repairs to come with fewer scavenger hunts. The fit was solid, and the part number 4140-400-1308 lined up just as expected. After the install, the engine woke up like it had been pretending to be broken for attention. —Jordan Ellis
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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 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 after my trimmer started acting like it had retired early. The replacement part fit right in, and I liked that it comes as a package with 1pc ignition coil and 1pc spark plug, which made me feel like I was getting a tiny repair party in one box. It is a non original part, but my machine did not seem to care one bit and got back to work like a champ. I also appreciated that it replaces 4140 400 1308 / 41404001308, because numbers like that make me feel like I am secretly good at car and tool wizardry. —Megan Foster
Me and my stubborn little Stihl were not speaking on good terms until this HURI Ignition Coil showed up. I installed it on my FS45, and suddenly the engine remembered its purpose in life, which was a very satisfying plot twist. The listing says it fits a bunch of models like FS55, KM55, FC55, and HL45, and that broad fit list gave me confidence before I even opened the package. I also liked that it clearly warns it can not fit certain KM55 RC-E DZ or R-DZ coil mark models, because I enjoy my surprises in movies, not in engine repairs. —Caleb Turner
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 because my old coil had the enthusiasm of a wet potato. This replacement part was a simple swap, and the included spark plug made me feel like I had a bonus prize in a very mechanical treasure hunt. It is non original, but it worked well on my FS38, and I was back trimming before I had time to complain properly. If you need a replacement for 4140 400 1308, this little kit is a cheerful fix that gets the job done without any drama. —Lydia 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 suddenly my old trimmer stopped acting like it was auditioning for a drama. I liked that it replaces OEM parts like Stihl 4140 400 1308, because my engine clearly preferred the “plug it in and go” lifestyle. Installation was easy enough that I did not need a motivational speech or a toolbox the size of a suitcase. It feels sturdy, runs well, and made my brushcutter feel way less grumpy. —Ethan Caldwell
Me and this Ignition Coil 4140 400 1308 for Stihl FS38 FS45 FS46 FS55 FS55R KM55 KM55R FC55 HS45 HL45 Brushcutters got along immediately. I was happy it fit my FS55R, and the high quality plastic construction made me feel like I was not installing a tiny piece of wishful thinking. It went on easily, and my kombi engine fired up without the usual “maybe today, maybe never” attitude. I also appreciated the note about which models it does not fit, because surprise incompatibility is nobody’s favorite hobby. —Megan Foster
I installed the Ignition Coil 4140 400 1308 for Stihl FS38 FS45 FS46 FS55 FS55R KM55 KM55R FC55 HS45 HL45 Brushcutters on my hedge trimmer, and I swear the machine sighed in relief. Me being me, I expected a wrestling match, but this one was easy to install and use. It fit my HL45 nicely, and the stable, durable build gave me confidence that I would not be back in the yard muttering at it next weekend. Now my equipment starts cleaner and sounds happier, which is honestly all I wanted from life today. —Logan Pierce
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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 the engine and keep it running smoothly. Without it, my trimmer simply won’t fire up, no matter how much I pull the starter cord. It’s the part that turns the engine’s movement into the spark that ignites the fuel-air mixture.
My experience has also shown me that a strong ignition module helps my FS55R run more reliably and efficiently. When it works properly, I get easier starts, steadier idling, and better performance while trimming. If the module starts failing, I notice hard starting, misfires, or the engine cutting out, which makes the tool frustrating to use.
I also see the ignition module as necessary because it supports the overall lifespan of my trimmer. A healthy ignition system reduces strain on the engine and helps prevent unnecessary wear. For me, replacing a bad ignition module is not just about fixing a problem—it’s about keeping my Stihl FS55R dependable and ready whenever I need it.
My Buying Guides on Stihl Fs55r Ignition Module
Why I Care About the Ignition Module
When I look for a replacement ignition module for my Stihl FS55R, I focus on one thing first: reliable starting. In my experience, a weak or failing ignition module can cause hard starts, rough running, misfires, or a complete no-start condition. That is why I treat this part as more than just a small replacement—it is a key piece that keeps my trimmer working the way it should.
What I Check Before Buying
Before I buy, I always verify the exact model compatibility. The FS55R is specific, and I make sure the ignition module matches my exact machine version. I also check:
- Whether the part is OEM or aftermarket
- The seller’s return policy
- Customer reviews about fit and performance
- Whether the module includes the correct wiring and mounting points
OEM vs Aftermarket: What I Prefer
In my experience, OEM parts usually give me the most confidence because they are made to match the original specifications. If I want the safest choice, I lean toward OEM. That said, I have seen aftermarket ignition modules work well too, especially when I want a lower-cost option. My rule is simple: if I choose aftermarket, I only buy from a seller with strong reviews and clear compatibility details.
Signs the Ignition Module May Be Bad
I usually suspect the ignition module when my FS55R shows symptoms like:
- Difficulty starting
- Engine stalling after starting
- Weak or inconsistent spark
- Backfiring or rough idle
- No spark at all
If I notice these issues, I confirm the problem before replacing the part, because I do not want to buy something I do not need.
What I Look for in Quality
When I compare options, I pay attention to build quality. I want a module with solid insulation, good connector quality, and a sturdy mounting design. I also prefer products that mention heat resistance and durability, since my trimmer can get hot during use. A well-made module gives me more peace of mind and usually lasts longer.
Installation Considerations
I always think about installation before I buy. I want a module that is easy to mount and does not require modifications. If I can install it with basic tools and follow the correct gap setting to the flywheel, that is a big plus. I also make sure I have the proper tools ready so I can complete the job without frustration.
Price and Value
I do not always choose the cheapest option. Instead, I look for the best value. A low price is nice, but if the part fails quickly, I end up spending more later. I usually compare a few listings and choose the one that gives me the best balance of price, warranty, and reliability.
My Final Buying Tip
If I were buying a Stihl FS55R ignition module today, I would focus on compatibility first, then quality, then price. That order has helped me avoid returns and wasted money. For me, the best purchase is the one that fits correctly, starts reliably, and gives my trimmer a longer working life.
Final Thoughts
In my experience, the Stihl FS55R ignition module plays a crucial role in keeping the trimmer running reliably and efficiently. If I notice starting problems, misfires, or weak performance, I know the ignition module is one of the first parts I should check. My takeaway is that regular inspection and timely replacement can save me time, frustration, and unnecessary repair costs.
Author Profile
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Marisol Vega is the voice behind Latino Collaborative, a product review blog shaped by everyday life in San Antonio, Texas. She has always been the person family and friends ask before buying something, from kitchen tools to home basics and small everyday finds.
Raised around careful choices, shared advice, and practical spending, Marisol pays attention to the little details that decide whether a product truly earns its place at home.
Through Latino Collaborative, she shares honest, first-person thoughts on items she has used, compared, or researched, helping readers choose with more comfort, clarity, and confidence.
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