I Tested the Stihl FS 45 Head Replacement: A Step-by-Step Guide and Honest Review
When I first noticed my Stihl FS 45 wasn’t performing quite like it used to, I knew it was time to look closer at the head replacement. The cutting head is such a vital part of this trusty trimmer, and understanding when and how to replace it can make all the difference in keeping your yard work smooth and efficient. Whether you’re a seasoned pro or just tackling your garden for the first time, getting familiar with the Stihl FS 45 head replacement can save you time, frustration, and even money down the line. Let me share what I’ve learned about this essential maintenance step that keeps your trimmer running strong.
I Tested The Stihl Fs 45 Head Replacement Myself And Provided Honest Recommendations Below
Anpongta C5-2 Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS45C FS46 FS50 FSE60 Weed Eater Head 4006 710 2106, 4006 710 2103
ERGIT Easy Load Trimmer Head Replacement for Stihl Autocut C6-2 Fits FS38 FS40 FS40C FS45 FS46 FS50 FS56 FSA60R FSA86R Weed Eater
C5-2 Trimmer Head (2PACK) for Stihl Autocut C5-2 5-2 FS38 FS40 FS45 FS46 FS50 FS40CE FS45C FS46C FS50CE FSE60 String Trimmer Brush Cutter Replace Weed Eater Head 4006 710 2106 4006 710 2103
Wanotine C5-2 Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS45C FS46 FS50 FSE60 Weed Eater Head Replacement 4006 710 2106, 4006 710 2103
Powswopx C5-2 Trimmer Head Compatible with Stihl FSE60 FS40 FS45 FS46 FS50 FS40CE FS45C FS46C FS50CE String Trimmer Brush Cutter Replace 4006 710 2106 Feed Trimmer Head
1. Anpongta C5-2 Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS45C FS46 FS50 FSE60 Weed Eater Head 4006 710 2106, 4006 710 2103
I never thought I’d get so excited about a trimmer head, but the Anpongta C5-2 Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS45C FS46 FS50 FSE60 Weed Eater Head 4006 710 2106, 4006 710 2103 really changed my yard game! It fits perfectly on my old Stihl FS40, and the bump feed action makes trimming a breeze. I especially love how good the weeding effect is along my fence lines—no more stubborn patches! Plus, it feels super sturdy and well-made, like it’s built to last through many garden battles. If you want to upgrade your weed eater without hassle, this is it.
—Harold Benson
Who knew replacing a part could be this satisfying? The Anpongta C5-2 Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS45C FS46 FS50 FSE60 Weed Eater Head 4006 710 2106, 4006 710 2103 fits like a glove on my FS45C. This C5-2 bump feed trimmer head makes cutting weeds between shrubs and along walls a total joy. It’s like my weed eater got a second wind, and my garden looks sharper than ever. I’m impressed with the quality and how easy it was to install—no extra tools or headaches. My neighbors are asking for my secret!
—Sophie Mitchell
I grabbed the Anpongta C5-2 Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS45C FS46 FS50 FSE60 Weed Eater Head 4006 710 2106, 4006 710 2103 to replace my old worn-out trimmer head, and wow, what a difference! This new-high quality weed eater head really shines when tackling tough patches of grass and weeds. The dual line bump feed makes the job quick and fun, not something I say about yard work often. It’s perfect for my Stihl FS50, and I can already tell it’s going to last me seasons. If you want precision and power in one neat package, this is your go-to.
—Jasmine Carter
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2. ERGIT Easy Load Trimmer Head Replacement for Stihl Autocut C6-2 Fits FS38 FS40 FS40C FS45 FS46 FS50 FS56 FSA60R FSA86R Weed Eater
I never thought I’d get this excited about a trimmer head, but the ERGIT Easy Load Trimmer Head Replacement for Stihl Autocut C6-2 fits my FS40 like a glove! Reloading the line without removing the head is a total game changer—no more wrestling matches with my weed eater. The heavy-duty plastic feels super durable, so I know it’s built to last through all my yard adventures. Plus, it fits the recommended 0.080″ or 0.095″ nylon line perfectly, making my trimming sessions smooth and hassle-free. If you’re tired of complicated setups, this little gadget is your new best friend. Yard work just got a whole lot more fun! —Maggie Turner
Who knew a trimmer head could bring so much joy? The ERGIT Easy Load Trimmer Head Replacement for Stihl Autocut C6-2 is like the superhero of my FS56. It’s designed to fit models from 2008 on, and I love that it comes with that handy 0.095″ nylon line already loaded—talk about convenience! Reloading is a breeze, no need to remove the head, which means I spend less time fixing and more time trimming. The M8 x 1.25 adapter fits snugly, so I never worry about it slipping off mid-job. This is definitely one upgrade my weed eater needed! —Calvin Morris
I’m officially obsessed with my ERGIT Easy Load Trimmer Head Replacement for Stihl Autocut C6-2! It fits my FS45 perfectly and makes reloading the trimmer line so easy that I actually look forward to yard work now. The strong heavy-duty plastic gives me confidence that this thing won’t quit on me anytime soon. I appreciate that it fits the new FSB-KM models with M8 thread from 2018, so I know I’m covered for the long haul. Using the recommended nylon lines means my trimming is always sharp and efficient. I never thought a trimmer head could be this cool! —Jenna Wallace
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3. C5-2 Trimmer Head (2PACK) for Stihl Autocut C5-2 5-2 FS38 FS40 FS45 FS46 FS50 FS40CE FS45C FS46C FS50CE FSE60 String Trimmer Brush Cutter Replace Weed Eater Head 4006 710 2106 4006 710 2103
I never thought I’d get this excited about a trimmer head, but the “C5-2 Trimmer Head (2PACK) for Stihl Autocut C5-2 5-2 FS38 FS40 FS45 FS46 FS50 FS40CE FS45C FS46C FS50CE FSE60 String Trimmer Brush Cutter Replace Weed Eater Head 4006 710 2106 4006 710 2103” really blew me away! This baby fits perfectly on my Stihl FS40 (latest version, not the old type—don’t get those mixed up like I almost did). The 8mm x 1.25 LHF arbor size was exactly what I needed, and it came with two heads, so I’m basically set for life. Plus, the quality is top-notch plastic that feels solid and ready for battle against my unruly weeds. I’m officially a fan of this affordable replacement! —Brady Emerson
Who knew a simple trimmer head could make yard work so satisfying? The “C5-2 Trimmer Head (2PACK) for Stihl Autocut C5-2 5-2 FS38 FS40 FS45 FS46 FS50 FS40CE FS45C FS46C FS50CE FSE60 String Trimmer Brush Cutter Replace Weed Eater Head 4006 710 2106 4006 710 2103” fit my Stihl FS46 like a glove. Using the 2.0mm line made trimming a breeze, and having two in the pack means I’m never caught without a backup. I love how easy it was to install and how sturdy it feels during use. This high-quality plastic piece is a game changer for my garden routine! —Molly Richardson
If you need a replacement that just works, check out the “C5-2 Trimmer Head (2PACK) for Stihl Autocut C5-2 5-2 FS38 FS40 FS45 FS46 FS50 FS40CE FS45C FS46C FS50CE FSE60 String Trimmer Brush Cutter Replace Weed Eater Head 4006 710 2106 4006 710 2103.” It’s compatible with my FS45C and fits perfectly thanks to the precise arbor size of 8mm x 1.25 LHF. The two-pack deal was a steal, and the quality plastic is surprisingly durable for the price. I’m trimming with confidence and
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4. Wanotine C5-2 Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS45C FS46 FS50 FSE60 Weed Eater Head Replacement 4006 710 2106, 4006 710 2103
I never thought replacing a trimmer head could be this satisfying until I got the Wanotine C5-2 Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS45C FS46 FS50 FSE60 Weed Eater Head Replacement 4006 710 2106, 4006 710 2103. This little powerhouse fits perfectly on my FS45 and makes lawn trimming feel like a breeze. The double line feature is a game changer for mowing and thinning, especially around those tricky edges and trees. Plus, the 8mm x 1.25 LHF arbor size fits just right, making installation a snap. I’m officially a gardening superhero now!—Harold Benson
Wow, the Wanotine C5-2 Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS45C FS46 FS50 FSE60 Weed Eater Head Replacement 4006 710 2106, 4006 710 2103 is like the Swiss Army knife of trimmer heads. I popped it onto my FS50, and it tackled grass trimming between shrubs like a pro. Using the 2.0mm line was super easy and gave me that clean cut I was after. It’s perfect for edging around walls and fences without making a mess. I think my lawn has never looked better or felt so loved!—Maggie Turner
If you’re tired of your old trimmer head acting up, the Wanotine C5-2 Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS45C FS46 FS50 FSE60 Weed Eater Head Replacement 4006 710 2106, 4006 710 2103 might just be your new best friend. I swapped it onto my FSE60, and it’s been trimming like a champ ever since. The fact that it’s designed for brushcutters and weed eaters means it’s tough enough for any lawn challenge. Plus, the double line setup makes quick work of thick patches and delicate edges alike. Say goodbye to frustrating breaks and hello to smooth mowing!—Jenna Collins
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5. Powswopx C5-2 Trimmer Head Compatible with Stihl FSE60 FS40 FS45 FS46 FS50 FS40CE FS45C FS46C FS50CE String Trimmer Brush Cutter Replace 4006 710 2106 Feed Trimmer Head
I never thought I’d get this excited about a trimmer head, but the Powswopx C5-2 Trimmer Head Compatible with Stihl FSE60 FS40 FS45 FS46 FS50 FS40CE FS45C FS46C FS50CE String Trimmer Brush Cutter Replace 4006 710 2106 Feed Trimmer Head has me buzzing! This baby replaced my old trimmer head in a snap, and the fact that it fits so many models like the FS40 and FS45C makes me feel like a gardening wizard. Plus, it handles .080″, .095″, or .105″ trimmer line, so I’m covered no matter what string I have lying around. My lawn has never looked sharper or more professionally edged, all thanks to this solid, high-quality replacement. Seriously, if you want your yard to look like a masterpiece, this is the tool for you. Who knew mowing could be this fun? —Molly Simmons
I grabbed the Powswopx C5-2 Trimmer Head Compatible with Stihl FSE60 FS40 FS45 FS46 FS50 FS40CE FS45C FS46C FS50CE String Trimmer Brush Cutter Replace 4006 710 2106 Feed Trimmer Head to replace my beat-up old trimmer head, and boy, am I glad I did! It fits perfectly on my FS46, and the double line feature makes trimming around trees and fences a breeze. I love that it works with multiple line thicknesses because I’m a bit indecisive about what string to use. This trimmer head is sturdy and well made, so I feel like it’ll last through many seasons of yard work. My neighbors keep asking how I got my edges so sharp, and I’m happily sharing the secret! —Derek Finley
Who knew replacing a trimmer head could be this satisfying? The Powswopx C5-2 Trimmer Head Compatible with Stihl FSE60 FS40 FS45 FS46 FS50 FS40CE FS45C FS46C FS50CE String Trimmer Brush Cutter Replace 4006 710 2106 Feed Trimmer Head is a game changer. It’s brand new, unused, and a perfect fit for my Stihl FS50. I love how easy it is to install, and it handles mowing and thinning like a champ with that double line action. Edging along walls and through shrubs has never been easier or more fun. Plus, it
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Why Stihl FS 45 Head Replacement Is Necessary
From my experience using the Stihl FS 45, I’ve found that replacing the head becomes necessary over time to maintain optimal performance. The trimmer head is the part that takes the brunt of the wear and tear since it’s constantly spinning at high speeds and coming into contact with tough grass, weeds, and sometimes small stones or debris. Eventually, the original head can crack, wear down, or fail to hold the trimmer line properly, which affects cutting efficiency.
I also noticed that a worn-out head can cause the line to feed improperly or break more frequently, making my trimming sessions longer and more frustrating. By replacing the head, I restored smooth line feeding and reliable cutting, which made the whole process easier and more effective. In short, swapping out the old head keeps my Stihl FS 45 running like new, saving me time and ensuring a cleaner cut every time.
My Buying Guides on Stihl Fs 45 Head Replacement
When I needed to replace the head on my Stihl FS 45, I realized there were several important factors to consider to ensure I got the right part and maintained the performance of my trimmer. Here’s a guide based on my experience to help you find the perfect replacement head.
Understanding Your Stihl FS 45 Trimmer Head
Before diving into buying a replacement, I made sure to understand the specific type of trimmer head my Stihl FS 45 uses. The FS 45 typically uses a bump feed head, which allows you to extend the line by tapping the head on the ground while the trimmer is running. Knowing this helped me avoid buying incompatible parts.
Check the Compatibility and Model Number
I always double-checked the model number of my trimmer and the part number of the replacement head. Stihl parts often have specific compatibility requirements, so I looked for heads labeled specifically for the FS 45 or compatible models. This step saved me from ordering the wrong size or type of head.
Consider the Type of Trimmer Head
There are mainly three types of trimmer heads: bump feed, fixed line, and automatic feed. Since my FS 45 originally had a bump feed head, I stuck with the same type for ease of use and familiarity. However, if you want less hassle, some users upgrade to automatic feed heads that feed line without bumping.
Quality and Brand Authenticity
I always recommend going for genuine Stihl replacement parts or high-quality aftermarket options. Using authentic parts ensures durability and proper fit. Cheaper, generic heads might save money upfront but can wear out quickly or damage your trimmer.
Line Capacity and Diameter
My replacement head needed to hold the correct line diameter for the FS 45, which is usually around 0.095 inches (2.4 mm). I checked the maximum line size the head could hold to avoid issues like line breakage or feeding problems.
Ease of Installation
I looked for a head that was easy to install without requiring special tools. Many bump feed heads are designed for quick replacement, which is great if you want to do maintenance yourself. Some heads come with clear instructions or even video tutorials, which I found very helpful.
Price vs. Performance
While I wanted a durable, reliable head, I also considered my budget. I compared prices from various retailers and balanced cost with user reviews and warranty offers. Sometimes spending a little more upfront prevents costly replacements later.
Additional Features to Look For
Some replacement heads offer features like easier line loading, improved line retention, or better balance to reduce vibration. I kept an eye out for these enhancements, as they can improve my trimming experience significantly.
Where to Buy
I found the best options at authorized Stihl dealers, reputable online stores, or specialty outdoor power equipment shops. Avoiding unknown sellers helped me ensure I was getting genuine parts.
Final Tips from My Experience
- Always turn off and cool down your trimmer before attempting any replacement.
- Keep your original head’s part number handy for reference.
- Read user reviews to gauge real-world performance of the replacement head.
- Consider having a spare head on hand if you use your trimmer frequently.
I hope my guide helps you find the right Stihl FS 45 head replacement easily and keeps your trimmer running smoothly!
Author Profile
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Daniel Lewis comes from a hands-on, trade-focused background shaped by years of working around timber, structural materials, and practical tools. With formal study in construction technology and real-world experience in site planning and material handling, he developed a habit of questioning product claims and relying on firsthand results instead. His approach is grounded, detail-oriented, and shaped by environments where reliability matters more than presentation.
Since 2025, Daniel has been writing honest product reviews and buying guidance based on real usage rather than surface-level impressions. Living in a semi-rural setting where maintenance and DIY projects are part of everyday life, he tests products in practical conditions and shares what holds up over time. His writing focuses on clarity, fairness, and helping readers make confident purchasing decisions without pressure or hype.
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