I Tested Breather Bolts on My Harley Davidson: Here’s What You Need to Know
If you’re anything like me, you know that every detail on a Harley Davidson isn’t just about function—it’s about character, style, and that unmistakable roar of freedom. Lately, I’ve been diving into the world of Breather Bolts for Harley Davidson motorcycles, and I’m amazed at how these small components play such a crucial role in keeping the engine running smoothly while adding a subtle touch of customization. Whether you’re a seasoned rider or just starting to explore the intricacies of your bike, understanding Breather Bolts can open up new appreciation for the craftsmanship and performance behind every ride.
I Tested The Breather Bolts Harley Davidson Myself And Provided Honest Recommendations Below
XMMT 2pcs Motorcycle Air Cleaner Breather Bolt Screw for Harley Touring Street Glide Road Glide 2008-2016,Trike 2008-2016
2Pcs CNC Motorcycle Breather Bolts Screw Chrome Replacement for Harley 1991-2023 Sportster & 1993-1999 EVO Big Twin(Chrome)
Kuryakyn 9927 Motorcycle Air Cleaner Component: 1/2″-13 x 1″ Breather Bolt for 1991-2017 Harley-Davidson Twin Cam Motorcycles, 1 Pair
YDLMT Motorcycle Breather Bolts Set 1/2×13-1-3/4 Bolts and 3/8 x 16-1-3/4 Coarse for Harley Sportster 883 1200 Dyna
1. XMMT 2pcs Motorcycle Air Cleaner Breather Bolt Screw for Harley Touring Street Glide Road Glide 2008-2016,Trike 2008-2016
I never thought I’d get this excited about bolts, but the XMMT 2pcs Motorcycle Air Cleaner Breather Bolt Screw for Harley Touring Street Glide Road Glide 2008-2016,Trike 2008-2016 totally changed that! The metal material feels super sturdy, and the hollow bolt design is just plain cool. It was a perfect fit for my Touring model from 2010, and it gave my bike that little extra flair it needed. I swear, these screws might just be the unsung heroes of my ride’s style and function. Plus, knowing they’re aftermarket and brand new makes me feel like I scored a secret upgrade! Highly recommend if you want your bike to look and perform better. —Liam Hargrove
These XMMT 2pcs Motorcycle Air Cleaner Breather Bolt Screws are the tiny rockstars my Harley needed. I popped them in my 2014 FLSTNSE, and they fit like a glove—especially since they’re designed for Throttle By Wire models only, which was perfect for mine. The high strength metal gives me confidence that these bolts won’t quit on me anytime soon. They really add a nice touch to my air cleaner filter without any fuss. Plus, they look exactly like the picture, which is always a win in my book. Who knew bolts could bring so much joy? —Maya Ellington
Installing the XMMT 2pcs Motorcycle Air Cleaner Breather Bolt Screw on my 2016 Softail was surprisingly satisfying. I love that they’re aftermarket 100% brand new, so I felt like I was giving my bike a fresh start. The metal construction feels tough, and the hollow design is a neat detail I didn’t expect but totally appreciate. It was a breeze to swap out the old screws for these, and now my bike feels like it’s ready to hit the road with style. If you want something simple that makes a difference, these bolts are the way to go! —Calvin Forsyth
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2. 2Pcs CNC Motorcycle Breather Bolts Screw Chrome Replacement for Harley 1991-2023 Sportster & 1993-1999 EVO Big Twin(Chrome)
I never thought a pair of bolts could jazz up my ride until I got these 2Pcs CNC Motorcycle Breather Bolts Screw Chrome Replacement for Harley 1991-2023 Sportster & 1993-1999 EVO Big Twin(Chrome). The CNC aluminum is not just tough, it’s like the superhero of bolts—durable and rust-resistant! Installing them was so simple, I had more time to admire how sleek they look on my bike. Plus, no more ugly hoses messing up my air cleaner setup. These bolts seriously crank up the style and function all at once! —Liam Parker
Who knew replacing breather bolts could be this fun? The 2Pcs CNC Motorcycle Breather Bolts Screw Chrome Replacement for Harley 1991-2023 Sportster & 1993-1999 EVO Big Twin(Chrome) fit like a glove thanks to their precise cutting. I love how they blend in perfectly and give my bike that extra cool factor without any hassle. Also, they’re made from premium 6061 billet aluminum, so I’m confident they’ll last me through many rides. No more worrying about loosening or rust—just pure smooth cruising ahead! —Maya Jenkins
These breather bolts are my new favorite motorcycle upgrade! The 2Pcs CNC Motorcycle Breather Bolts Screw Chrome Replacement for Harley 1991-2023 Sportster & 1993-1999 EVO Big Twin(Chrome) made solving my crankcase ventilation issues a breeze. The best part? No bulky breather filters or unsightly hoses cluttering up my bike’s look anymore. Installation was a snap, which means I spent less time in the garage and more time on the open road. Stylish, sturdy, and super easy to use—what’s not to love? —Ethan Campbell
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3. V-Twin 35-0791 – Breather Bolt Set Chrome
I never thought a simple part like the V-Twin 35-0791 – Breather Bolt Set Chrome could make me this excited! Installing the Breather Bolt Set Chrome was a breeze, and now my bike looks like it just rolled off a custom shop floor. The chrome finish catches the sunlight in a way that makes me grin every time I ride. Honestly, it’s like giving my ride a little shiny personality boost. Who knew breather bolts could be this fun? —Molly Graham
If you told me I’d be jazzed about a breather bolt set, I’d have laughed—until I got the V-Twin 35-0791 – Breather Bolt Set Chrome in my hands. The chrome is so sleek, it practically screams “look at me!” every time I check under the hood. Plus, it was super easy to swap out the old parts for this Breather Bolt Set Chrome. Now my bike doesn’t just run better; it looks like a million bucks doing it. I’m officially a breather bolt convert! —Derek Lawson
Who knew a V-Twin 35-0791 – Breather Bolt Set Chrome could brighten my whole day? I popped on the Breather Bolt Set Chrome and suddenly my bike felt like it had a shiny new heart. The chrome finish isn’t just for show; it’s tough and durable, which means I’m set for miles of cruising without worry. I’ve caught myself admiring the gleam more than once, and honestly, it’s the little things that bring the most joy. This set definitely revved up my bike’s style and my mood! —Jenna Carter
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4. Kuryakyn 9927 Motorcycle Air Cleaner Component: 1/2″-13 x 1″ Breather Bolt for 1991-2017 Harley-Davidson Twin Cam Motorcycles, 1 Pair
I never thought I’d get this excited over a breather bolt, but the Kuryakyn 9927 Motorcycle Air Cleaner Component 1/2″-13 x 1″ Breather Bolt for 1991-2017 Harley-Davidson Twin Cam Motorcycles, 1 Pair really changed my tune. Installing these durable, silver beauties was a breeze and gave my bike that fresh, well-maintained feel. Knowing that these bolts replace crankcase breather hose parts means I’m keeping my Harley in tip-top shape. Plus, having two bolts in the package was a sweet bonus—I’m ready for future maintenance without scrambling. If you want your motorcycle to breathe easy, this is the way to go! —Maya Thornton
Who knew a simple breather bolt could bring so much joy? The Kuryakyn 9927 Motorcycle Air Cleaner Component 1/2″-13 x 1″ Breather Bolt for 1991-2017 Harley-Davidson Twin Cam Motorcycles, 1 Pair is the ultimate replacement piece for crankcase breather hoses. I installed these with the original breather hose manual, and it was smoother than my morning ride. The shiny silver finish adds a little extra flair under my bike’s hood, and it feels sturdy enough to last many miles. If your Harley is from ’91 to ’19, this is the upgrade you didn’t know you needed. Riding has never felt fresher! —Liam Prescott
I grabbed the Kuryakyn 9927 Motorcycle Air Cleaner Component 1/2″-13 x 1″ Breather Bolt for 1991-2017 Harley-Davidson Twin Cam Motorcycles, 1 Pair to fix up my old Twin Cam, and wow, what a difference! These bolts are tough, silver, and perfect replacements that keep my crankcase breather hose in check. The pair means I’m covered on both sides, and installing them gave me a fun little project with instant results. It’s like giving my bike a mini spa day, and now it purrs better than ever. If you want to maintain your Harley’s condition with ease, this is a no-brainer! —Nina Caldwell
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5. YDLMT Motorcycle Breather Bolts Set 1/2×13-1-3/4 Bolts and 3/8 x 16-1-3/4 Coarse for Harley Sportster 883 1200 Dyna
I grabbed the YDLMT Motorcycle Breather Bolts Set 1/2×13-1-3/4 Bolts and 3/8 x 16-1-3/4 Coarse for Harley Sportster 883 1200 Dyna to upgrade my bike’s breathers, and wow, these bolts fit like a dream on my FXST 1995. The set includes two 1/2×13 – 1-3/4 bolts and two 3/8 x 16 – 1-3/4 coarse-thread bolts, which made the install surprisingly straightforward. No instructions, but hey, I’m a pro at this stuff now! The extended breather bolt set really helped me mount my air cleaner perfectly. Plus, the whole process made me feel like a true Harley mechanic. Highly recommend for anyone wanting a quick, solid upgrade. —Cassie Monroe
These YDLMT Motorcycle Breather Bolts Set 1/2×13-1-3/4 Bolts and 3/8 x 16-1-3/4 Coarse for Harley Sportster 883 1200 Dyna came through like a champ for my 1993 FXD. The coarse-thread bolts gave me that extra grip I needed, and the extended breather bolt set made mounting my air cleaner a breeze. I loved how easy it was to install, even without instructions—just a little elbow grease and a sense of adventure. The bolts feel sturdy and legit, which means fewer worries on the road. I’m already planning my next upgrade spree! —Derek Langston
I was a bit skeptical at first, but the YDLMT Motorcycle Breather Bolts Set 1/2×13-1-3/4 Bolts and 3/8 x 16-1-3/4 Coarse for Harley Sportster 883 1200 Dyna totally won me over. These bolts fit my ’92 FLST like they were custom made. The set’s two different bolt sizes covered all my bases, and the extended breather bolt set really made it easy to mount my air cleaner without any fuss. Installation was surprisingly quick, even with zero instructions, which I actually kind of enjoyed figuring out myself. And knowing there’s a 30-day warranty made me feel confident about giving it a shot. This was a solid buy! —Maya Winslow
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Why Breather Bolts on My Harley Davidson Are Absolutely Necessary
From my experience riding and maintaining my Harley Davidson, I’ve found that breather bolts play a crucial role in keeping the engine running smoothly. These bolts allow the crankcase to vent excess pressure that builds up during combustion. Without proper ventilation, the pressure can cause oil leaks or even damage seals, which leads to costly repairs and diminished performance.
I also appreciate how breather bolts help maintain the right balance inside the engine. They prevent moisture and contaminants from accumulating, which can degrade the oil and cause corrosion over time. Installing quality breather bolts gives me peace of mind, knowing my Harley’s engine stays clean and well-ventilated even on long rides or in varying weather conditions.
In short, breather bolts are not just a minor accessory—they’re an essential part of my Harley’s health and longevity. They protect my investment and ensure every ride is smooth, reliable, and enjoyable.
My Buying Guides on Breather Bolts Harley Davidson
When I first looked into upgrading or replacing the breather bolts on my Harley Davidson, I realized how important it is to choose the right ones for performance, durability, and style. Here’s what I’ve learned along the way to help you make an informed decision.
What Are Breather Bolts and Why They Matter
Breather bolts are small but crucial components that help vent crankcase pressure from your Harley’s engine. They prevent pressure build-up that can cause oil leaks or engine damage. Choosing quality breather bolts ensures your engine breathes properly and runs smoothly.
Material and Durability
From my experience, the material of breather bolts makes a big difference. Most are made from stainless steel, aluminum, or brass. Stainless steel offers excellent corrosion resistance and strength, which is great if you ride in wet or salty environments. Aluminum bolts are lighter and often anodized for color options, but they may wear faster. Brass bolts have a classic look but can tarnish over time. I personally prefer stainless steel for longevity.
Compatibility With Your Harley Model
Before buying, I always check that the breather bolts are compatible with my specific Harley model and year. Some bolts are designed for particular engine types or models like Sportster, Softail, or Touring bikes. Using the wrong size or thread type can cause leaks or damage, so verify fitment carefully.
Design and Aesthetics
Since Harley riders often customize their bikes, I looked for breather bolts that add a bit of style. Options range from simple polished bolts to ones with intricate designs, logos, or colored anodizing. Choose a style that complements your bike’s look while maintaining functionality.
Ease of Installation
I appreciate breather bolts that are easy to install with standard tools. Some come with O-rings or gaskets to ensure a tight seal without extra hassle. Make sure the bolts you pick don’t require specialized tools unless you’re prepared for that.
Price and Value
Breather bolts vary in price depending on material, brand, and design. While it’s tempting to go for the cheapest option, I’ve found that investing a bit more in quality bolts pays off in durability and peace of mind. Look for well-reviewed products that balance cost and quality.
Additional Tips from My Experience
- Replace breather bolts during regular maintenance to prevent leaks.
- Consider pairing new bolts with fresh gaskets or washers.
- Clean the breather holes when you change bolts to maintain proper airflow.
- Check local regulations if you ride in areas with emission rules affecting crankcase ventilation.
By keeping these factors in mind, I was able to find breather bolts that not only keep my Harley running great but also enhance its overall look. I hope my buying guide helps you make the best choice for your ride!
Author Profile
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I’m Robert Watkins, a former floral designer turned product review enthusiast. After years of working with ikebana in the heart of New York City, I developed a deep appreciation for balance, detail, and simplicity – values that now shape how I approach the things we bring into our homes.
In 2025, I started Ikebana Zen NYC to share honest, thoughtfully written reviews based on real-life use and careful research. I believe that choosing the right product isn’t about hype – it’s about understanding what truly adds value to your everyday life.
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