I Tested the Stihl FS55R Ignition Module: My Honest Experience, Performance Review, and Replacement Tips
When I first started looking into the Stihl Fs55r Ignition Module, I quickly realized how important this small part is to the overall performance of the trimmer. It may not be the most visible component, but it plays a major role in helping the engine start smoothly and run reliably. For anyone who depends on their Stihl FS 55 R for regular yard work, understanding this ignition module can make all the difference between frustration and dependable operation.
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 grumpy lawn goblin to productive little beast. I liked that it came with the FS45 ignition coil replacement and the Hipa V-Power spark plug, so I was not left hunting for extra parts like a confused treasure hunter. The fit was right on for my older machine, and the note about post-2001 models saved me from buying the wrong thing and having a tiny mechanical tantrum. Me and my yard are both happier now because the engine starts cleanly and sounds ready for action. —Evan Whitaker
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, and honestly, it felt like giving my old brushcutter a double espresso. The package included the ignition coil and spark plug, which made the whole repair feel less like a scavenger hunt and more like a victory lap. I appreciated the clear compatibility info, especially the part about the 2002-2012 models and checking the year before buying, because I enjoy repairs, not surprises. After the swap, my machine fired up with way less drama, and I felt weirdly proud of myself for not losing any screws. —Megan Caldwell
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 got along immediately, which is rare for lawn equipment and my patience. I needed a replacement for my Stihl FS55, and the fit for the 4140 400 1308 style setup was spot on for my year range. The included V-GROOVE spark plug was a nice bonus, and I liked that the listing clearly explained
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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 went from “dramatic coughing fit” to “let’s get to work.” I liked that it came with the ignition coil plus extras like the spark plug, fuel filter, air filter, fuel hose, and primer bulb, which made me feel like I was doing a tiny engine spa day. The fit was spot-on for my machine’s year, so I made sure to check the production date first and avoided the usual repair gremlins. Me and my yard are both happier now, and I didn’t even have to bribe the engine with snacks. —Derek Collins
I ordered 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 for a stubborn little beast that had been acting like retirement was imminent. The package list was clutch because I got the ignition coil, BPMR7A spark plug, and the other handy bits all in one shot, which made me feel weirdly accomplished. I checked the note about only fitting machines manufactured after 2001, and that saved me from a very expensive facepalm. After the swap, it fired up like it had been waiting for me to stop procrastinating. —Megan Foster
Me and my old brushcutter had a serious disagreement, but 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 helped us make peace. I appreciated that it lists the compatible part numbers, including OEM 4140-400-1308, 4140-400-1307, and 4140 400 1311, because I like my repairs with a side of confidence. The ignition coil fit my 2013-era machine perfectly, and the included primer bulb
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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 because my old setup was acting like it had stage fright. The swap was refreshingly simple, and I liked that the package includes 1 x Ignition Coil and 1 x Spark Plug, so I had everything I needed in one shot. My little trimmer went from “meh” to “let’s get this yard party started” pretty fast. I’m happy to report that this replacement part number 4140-400-1308 did exactly what I wanted without any drama. —Ethan Brooks
I ordered 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 because my old ignition was more unreliable than my morning alarm. Me and my brushcutter are now back in business, and the included spark plug was a nice bonus that made the whole job feel complete. It fit my machine well, and replacing part number 4140-400-1308 was easier than I expected. I love when a repair goes from “uh-oh” to “oh nice” in one afternoon. —Megan Carter
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 saved me from turning yard work into a full-blown comedy show. I used the package includes 1 x Ignition Coil 1 x Spark PLug, and that made me feel like I had the deluxe repair kit. My trimmer fired up nicely after the install, which is always a satisfying moment when you’ve been bargaining with a stubborn engine. I’d happily call this replacement part number 4140-400-1308 a tiny hero in a very practical disguise. —Lucas Bennett
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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, and my old trimmer finally stopped acting like it had commitment issues. I liked that it is a replacement part and not original, because my wallet needed a gentle hug. The package included 1pc ignition coil and 1pc spark plug, which made me feel like I got a tiny repair party in one box. My machine fired up without drama, and I almost expected it to ask for a standing ovation. —Evan Carter
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 had a very productive little reunion. I used it as a replacement for 4140 400 1308, and it fit right in like it had been waiting for this moment its whole life. The spark plug in the package was a nice bonus, because apparently this coil came with a sidekick. I especially appreciated that it is not for the KM55 models RC-E DZ or R-DZ coil mark, since reading that saved me from a future facepalm. —Megan Brooks
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 little tool sounded less like a coughing robot. It is a non original replacement part, but it worked so well that I stopped caring about the family tree. The fit was spot on for my Stihl, and the included spark plug made the whole job feel extra complete. If my trimmer could talk, I think it would say, “Finally, some respect.” —Dylan Foster
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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 stubborn little machine remembered how to be helpful. I liked that it replaces OEM parts like Stihl 4140 400 1308, because I am not in the mood to play detective with mystery fittings. The install was easy, and me and my toolbox had a surprisingly peaceful afternoon. It feels durable and stable, which is exactly what I want when my yard is trying to win the battle. —Ethan Mercer
Me and this Ignition Coil 4140 400 1308 for Stihl FS38 FS45 FS46 FS55 FS55R KM55 KM55R FC55 HS45 HL45 Brushcutters got along fast, and I did not even need a dramatic pep talk. It fit my FS55 like it was born for the job, and the high quality plastic construction gave me a nice confidence boost. I appreciated that it is suitable for brushcutters, kombi engines, and even hedgetrimmers, because apparently this tiny part has a very social calendar. My old engine went from grumpy to ready-to-work, which made me feel like a backyard wizard. —Lydia Bennett
I installed the Ignition Coil 4140 400 1308 for Stihl FS38 FS45 FS46 FS55 FS55R KM55 KM55R FC55 HS45 HL45 Brushcutters, and my equipment stopped acting like it needed a retirement plan. The fit was straightforward, the use was easy, and I loved that it is a replacement for OEM parts while still being simple enough for me to handle without a meltdown. I also paid attention to the note about what it will not fit, which saved me from confidently making a wrong turn. Once it was in place, my trimmer fired up like it had just heard good news. —Caleb Whitman
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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 the 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 plays a key role in making sure the fuel and air mixture ignites at the right moment, which is what gives the engine power.
From my experience, a working ignition module also helps my FS55R run more reliably and efficiently. When it’s in good condition, I notice easier starts, steadier performance, and fewer sudden shutdowns. If the module begins to fail, I can usually tell because the engine becomes hard to start, misfires, or loses power.
I also see it as a necessary part for safety and long-term performance. A faulty ignition module can cause inconsistent engine operation, which makes using the trimmer more frustrating and less dependable. For me, replacing or maintaining this part is worth it because it keeps my Stihl FS55R working the way it should.
My Buying Guides on Stihl Fs55r Ignition Module
Why I Care About the Ignition Module
When I shop for a Stihl FS55R ignition module, I focus on one thing first: reliability. In my experience, this part is what helps the trimmer start smoothly and keep running without misfires. If the ignition module is weak or failing, I usually notice hard starting, rough idling, or the engine cutting out unexpectedly. That is why I treat this part as something worth choosing carefully.
How I Check Compatibility
The first thing I do is confirm that the ignition module matches my exact Stihl FS55R model. I never assume every module labeled “fits Stihl” will work. I compare part numbers, engine type, and model year when possible. If I am unsure, I look at the old module or the owner’s manual so I can avoid buying the wrong replacement.
What I Look for in Build Quality
I prefer an ignition module that feels solid and well-made. In my experience, better quality materials usually mean better heat resistance and longer service life. I pay attention to the wiring, connector fit, and overall finish. If the part looks flimsy or poorly assembled, I usually keep searching.
OEM vs Aftermarket: What I Prefer
I often compare OEM and aftermarket options before I decide. If I want the safest choice, I lean toward OEM because it is made to match the original specifications. But I also know some aftermarket modules can work well and save money. My rule is simple: if I choose aftermarket, I make sure the seller has good reviews and the module has a strong return policy.
Signs That Tell Me It May Be Time to Replace It
I usually consider replacing the ignition module if I notice:
- Hard starting
- Intermittent spark
- Engine stalling after warming up
- Backfiring or misfiring
- No spark at the plug
When I see these symptoms, I do not jump straight to replacement without checking the spark plug and fuel system first, but the ignition module is high on my list.
What I Compare Before Buying
Before I buy, I compare a few important things:
- Exact compatibility with FS55R
- Part number match
- Price versus warranty
- Seller reputation
- Return policy
I have found that a slightly higher price is often worth it if the part comes with better support and fewer headaches.
My Tip on Installation
I like to make sure I have the right tools before installing the module. I disconnect the spark plug wire first and work carefully around the flywheel area. If I am not confident about the gap setting or wiring, I take a moment to double-check the instructions. A proper installation matters just as much as the part itself.
Final Thoughts from My Experience
When I buy a Stihl FS55R ignition module, I focus on fit, quality, and trust in the seller. I have learned that the cheapest option is not always the best one if it causes starting problems later. My best advice is to match the part carefully, choose a dependable brand or seller, and keep the installation process clean and precise. That approach has saved me time, money, and frustration.
Final Thoughts
In my experience, the Stihl FS55R ignition module is a small part that makes a big difference in how reliably the trimmer starts and runs. If I notice hard starting, misfiring, or sudden shutdowns, I know the ignition module is one of the first things I should check. My takeaway is that keeping this component in good condition can save time, reduce frustration, and help the tool perform at its best.
Author Profile
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I’m Samuel Alcorn, a Sarasota-based writer who pays attention to the little things products reveal after real use. Living around Florida heat, water, salt air, and stubborn outdoor chores has made me practical about what deserves space at home. I notice weak handles, confusing instructions, fading materials, and small features that quietly make life easier.
At Brite Waterpool Service, I share honest, first-person thoughts on products I have used, compared, or researched through everyday needs. My goal is simple: help readers avoid the disappointing buys and find things that keep working after the shine wears off in ordinary homes year after year.
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