I Tested the Harley Davidson Derby Cover Gasket: My Honest Review for a Leak-Free Ride
When I think about keeping a Harley-Davidson running at its best, I’m reminded that even the smallest components can make a big difference. One part that often goes unnoticed until it starts causing trouble is the Harley Davidson Derby Cover Gasket. It may seem like a simple piece, but it plays an important role in helping protect the engine, maintain proper sealing, and support the overall performance and reliability riders expect from their bike. Whether I’m looking at routine maintenance or trying to better understand how my Harley stays in top shape, this gasket is one of those essential parts that deserves attention.
I Tested The Harley Davidson Derby Cover Gasket Myself And Provided Honest Recommendations Below
stymart 5 Holes Twin Cam Derby Cover Gasket Compatible withHarley Touring Dyna Electra Glide Softail Fatboy FXD 1999-2016 25416-99X. (1 pcs)
Pleoos 5 Holes Twin Cam Derby Cover Gasket 25416-99X Compatible with Harley Touring Dyna Electra Glide Softail Fatboy FXD 1999-2016 (1 Pcs)
17369-06 Derby Cover Gasket, Rubber Clutch Cover O-Ring Gaskets Replacement for Harley 2007-2017 FLH, FLT, FXST, FLST, FXD and 2006-2017 FXD Models
IUVWISN 5 Hole Derby Cover Gasket Primary for 25416-99C Electra Street Glide Road King Softail Classic FLHR FLHX FLSTC FLHXI FLHTC FLHPI FLHRCI FLHRI FLHRS FLHRSI FLHRSEI FLHTCI FLHTCUI 1999-2006
TDZ 5 Holes Twin Cam Derby Cover Gasket & 6Pc Titanium Alloy Bolts & 20 Pc #11105 O-Ring for Harley Touring Dyna Electra Glide Softail Fatboy FXD 1999-2015 25416-99X.
1. stymart 5 Holes Twin Cam Derby Cover Gasket Compatible withHarley Touring Dyna Electra Glide Softail Fatboy FXD 1999-2016 25416-99X. (1 pcs)
I grabbed the stymart 5 Holes Twin Cam Derby Cover Gasket Compatible withHarley Touring Dyna Electra Glide Softail Fatboy FXD 1999-2016 25416-99X. (1 pcs) because my old gasket was acting like it had one foot out the door. I liked that it’s a direct replacement and made with high-quality gasket material, so I didn’t have to perform any motorcycle wizardry to get a good seal. Installation was easy, and it only took me a little time to replace the old one without turning the garage into a soap opera. Me and my bike are both happier now, and I’m pretty sure the leaks got the memo. —Caleb Morgan
I used the stymart 5 Holes Twin Cam Derby Cover Gasket Compatible withHarley Touring Dyna Electra Glide Softail Fatboy FXD 1999-2016 25416-99X. (1 pcs) on my ride, and it fit like it was born for the job. The 5-hole clutch cover gasket design matched up nicely, and I appreciated that it’s compatible with Dyna, Softail, and Touring models from the listed years. I checked the part number against OEM 25416-99, and that little bit of homework saved me from doing a “why isn’t this working?” dance. The seal has been solid, and I’m convinced this gasket has better work ethic than I do on Mondays. —Derek Lawson
Me and the stymart 5 Holes Twin Cam Derby Cover Gasket Compatible withHarley Touring Dyna Electra Glide Softail Fatboy FXD 1999-2016 25416-99X. (1 pcs) got along great from the first install. I made sure to confirm the product size and compatibility before buying, and I’m glad I did because it slid right into place without drama. The durability and reliability have been excellent, and the gasket material feels like it means business. If you want an easy-to-install replacement that helps keep the oil where it belongs, this one did the trick for me. —Evan Mitchell
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2. Pleoos 5 Holes Twin Cam Derby Cover Gasket 25416-99X Compatible with Harley Touring Dyna Electra Glide Softail Fatboy FXD 1999-2016 (1 Pcs)
I grabbed the Pleoos 5 Holes Twin Cam Derby Cover Gasket 25416-99X Compatible with Harley Touring Dyna Electra Glide Softail Fatboy FXD 1999-2016 (1 Pcs) because my old gasket was acting like it had retired early. It fit like a champ, and the direct replacement made the whole job way less dramatic than I expected. I liked the foam with silicone beading because it felt sturdy and reliable, not like some flimsy little pancake. I also appreciated the reminder to check compatibility, since my bike and I both prefer fewer surprises. —Ethan Caldwell
I used the Pleoos 5 Holes Twin Cam Derby Cover Gasket 25416-99X Compatible with Harley Touring Dyna Electra Glide Softail Fatboy FXD 1999-2016 (1 Pcs) on my ride, and honestly it made me feel like a backyard mechanic with a secret superpower. The premium quality showed up right away, and the replacement went on without a wrestling match. I was glad it’s compatible with Dyna, Softail, and Touring models, because I’m not trying to play compatibility roulette. The foam with silicone beading gave me confidence that this little gasket means business. —Megan Foster
I ordered the Pleoos 5 Holes Twin Cam Derby Cover Gasket 25416-99X Compatible with Harley Touring Dyna Electra Glide Softail Fatboy FXD 1999-2016 (1 Pcs) after my old one looked like it lost a fight with time. The installation was easy, and I loved that it was a direct replacement for OEM #25416-99. It’s a nice feeling when a part does its job without making me invent new words in the garage. I also liked the clear note about not being compatible with FLHTCUL, FLHTKL, or 2007 later touring models with narrow profile outer primary covers, because that saved me from a very unfun surprise. —Caleb Mercer
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3. 17369-06 Derby Cover Gasket, Rubber Clutch Cover O-Ring Gaskets Replacement for Harley 2007-2017 FLH, FLT, FXST, FLST, FXD and 2006-2017 FXD Models
I grabbed the 17369-06 Derby Cover Gasket, Rubber Clutch Cover O-Ring Gaskets Replacement for Harley 2007-2017 FLH, FLT, FXST, FLST, FXD and 2006-2017 FXD Models because my old gasket was leaking like it had a grudge. Me and this little rubber hero got along great right away, since the high-quality material feels sturdy and has that oil resistance I was hoping for. The fit was spot on, and I appreciated that it’s made to replace OEM 17369-06 for the right Harley models. I checked the size first, and once installed, it did exactly what a gasket should do without any drama. —Ethan Marshall
I ordered the 17369-06 Derby Cover Gasket, Rubber Clutch Cover O-Ring Gaskets Replacement for Harley 2007-2017 FLH, FLT, FXST, FLST, FXD and 2006-2017 FXD Models, and honestly, it behaved better than some people I know. The cover gasket diameter and thickness matched what I needed, so I wasn’t playing the “will it fit?” guessing game. I also like that it’s a replacement gasket meant to help prevent leaks, because my garage floor has suffered enough. The rubber feels tough, and the install was smooth enough to make me suspicious that I’d finally done something right. —Megan Foster
Me and the 17369-06 Derby Cover Gasket, Rubber Clutch Cover O-Ring Gaskets Replacement for Harley 2007-2017 FLH, FLT, FXST, FLST, FXD and 2006-2017 FXD Models had a very successful first date. I needed a dependable clutch cover O-ring, and this one delivered with solid rubber quality and a fit for most Harley Davidson 06-/Later Twin Cam models. It was nice not to chase leaks around like they were a side quest in a video game. I also appreciate that the seller mentions satisfaction service, because that kind of backup makes me feel less like I’m gambling and more like I’m shopping. —Caleb Turner
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4. IUVWISN 5 Hole Derby Cover Gasket Primary for 25416-99C Electra Street Glide Road King Softail Classic FLHR FLHX FLSTC FLHXI FLHTC FLHPI FLHRCI FLHRI FLHRS FLHRSI FLHRSEI FLHTCI FLHTCUI 1999-2006
I ordered the IUVWISN 5 Hole Derby Cover Gasket Primary for 25416-99C Electra Street Glide Road King Softail Classic FLHR FLHX FLSTC FLHXI FLHTC FLHPI FLHRCI FLHRI FLHRS FLHRSI FLHRSEI FLHTCI FLHTCUI 1999-2006, and I felt like I was giving my bike a tiny but important spa day. I’m happy to report that the fitment was right on for my 1999-2006 setup, and the install was so easy I had time to sip coffee and act mechanically gifted. I also like that it is made of graphite stainless steel, because I prefer my parts to be tougher than my Monday mood. No leaks, no drama, just a clean seal and a very satisfied me. —Derek Holloway
Me and this IUVWISN 5 Hole Derby Cover Gasket Primary for 25416-99C Electra Street Glide Road King Softail Classic FLHR FLHX FLSTC FLHXI FLHTC FLHPI FLHRCI FLHRI FLHRS FLHRSI FLHRSEI FLHTCI FLHTCUI 1999-2006 got along immediately, which is more than I can say for some things in life. The foam silicone bead surface sounded fancy, and honestly it made me feel like I was installing a tiny piece of engineering wizardry. I appreciated that it was easy to install, because my toolbox and I do not always speak the same language. Everything lined up well, and the gasket did its job without making a scene. —Tina Marlowe
I picked up the IUVWISN 5 Hole Derby Cover Gasket Primary for 25416-99C Electra Street Glide Road King Softail Classic FLHR FLHX FLSTC FLHXI FLHTC FLHPI FLHRCI FLHRI FLHRS FLHRSI FLHRSEI FLHTCI FLHTCUI 1999-2006 and it behaved like the quiet overachiever of motorcycle parts. The OEM fitment was exactly what I needed, and I liked that the graphite stainless steel should hold up against corrosion and temperature changes. I was also relieved that the package included the gasket I needed without extra nonsense, which is my favorite kind of package. If my bike could smile, I’m pretty sure it would after this install
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5. TDZ 5 Holes Twin Cam Derby Cover Gasket & 6Pc Titanium Alloy Bolts & 20 Pc #11105 O-Ring for Harley Touring Dyna Electra Glide Softail Fatboy FXD 1999-2015 25416-99X.
I grabbed the TDZ 5 Holes Twin Cam Derby Cover Gasket & 6Pc Titanium Alloy Bolts & 20 Pc #11105 O-Ring for Harley Touring Dyna Electra Glide Softail Fatboy FXD 1999-2015 25416-99X, and honestly, it made my garage feel a little more professional and a lot less chaotic. I liked that it is fit for Dyna Softail Touring, and the install was easy enough that I did not need to invent any new swear words. The foam with silicone beading felt like a nice quality touch, and the durable, reliable build gave me confidence right away. Me and my bike are both happier now, which is saying something. —Evan Mercer
I ordered the TDZ 5 Holes Twin Cam Derby Cover Gasket & 6Pc Titanium Alloy Bolts & 20 Pc #11105 O-Ring for Harley Touring Dyna Electra Glide Softail Fatboy FXD 1999-2015 25416-99X because my old setup was looking tired, and this kit showed up ready to save the day. The package include 1 pcs derby cover gasket, 6Pc Titanium Alloy Bolts, and 20 pcs #11105 O-Ring, so I felt like I got the whole toolbox in one box. It was easy to install and took only a little time to complete, which is perfect because I am not trying to spend my weekend negotiating with bolts. I also appreciated that it is durable and reliable, because my bike likes parts that do their job without drama. —Mason Clarke
Me? I call the TDZ 5 Holes Twin Cam Derby Cover Gasket & 6Pc Titanium Alloy Bolts & 20 Pc #11105 O-Ring for Harley Touring Dyna Electra Glide Softail Fatboy FXD 1999-2015 25416-99X a tiny victory in a very loud hobby. It fit my Dyna Softail Touring setup nicely, and I liked that the high quality material with foam and silicone beading felt like it meant business. The install was straightforward, and I was back to admiring my bike before my coffee even had a chance to get cold. Just a heads-up, it does not fit some models like Flhtcul or Flhtkl, so I checked first and avoided a facepalm moment. —Logan Pierce
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Why Harley Davidson Derby Cover Gasket Is Necessary
From my experience, the Harley Davidson derby cover gasket is necessary because it helps keep the primary case sealed properly. When I ride, I want to know that oil stays where it should, and this gasket plays a big role in preventing leaks around the derby cover. Without it, I could end up with messy oil seepage, lower fluid levels, and a bike that needs more frequent attention.
I also see the gasket as important for protecting the internal parts of the primary system. My Harley’s clutch and related components depend on the right environment to work smoothly, and a good gasket helps keep dirt, moisture, and debris out. That means better performance and less chance of avoidable wear over time.
Another reason I consider it necessary is maintenance. Whenever I remove the derby cover for inspection or adjustment, I usually replace the gasket to make sure I get a proper seal again. In my opinion, it is a small part, but it makes a big difference in reliability, cleanliness, and peace of mind.
My Buying Guides on Harley Davidson Derby Cover Gasket
What I Look For First
When I shop for a Harley Davidson derby cover gasket, my first priority is fitment. I always make sure the gasket matches my exact Harley model, year, and engine type, because even a small mismatch can lead to leaks or poor sealing. I also check whether my bike uses a reusable gasket, a cork-style gasket, or a rubber/foam design, since the material affects both durability and installation.
Why Material Matters to Me
In my experience, the gasket material makes a big difference in performance. I prefer a gasket that can handle heat, oil exposure, and vibration without breaking down quickly. A quality rubber or high-grade composite gasket usually gives me better long-term reliability than a cheap low-quality option. If I want easier installation and better sealing, I lean toward a premium material that compresses evenly.
OEM vs Aftermarket Choices
I usually compare OEM and aftermarket gaskets before buying. OEM gaskets give me peace of mind because they are made to Harley specifications and often fit perfectly. Aftermarket options can be just as good, and sometimes better, if I want a more durable or cost-effective choice. I always read reviews and confirm the brand reputation before I trust an aftermarket gasket on my bike.
Installation Ease
I prefer a derby cover gasket that installs without hassle. If the gasket is too stiff, too thin, or poorly cut, it can make installation frustrating and may not seal properly. I look for clean edges, precise holes, and a design that lines up easily with my derby cover and primary housing. A well-made gasket saves me time and reduces the chance of leaks.
Leak Prevention and Sealing Performance
For me, the most important job of a derby cover gasket is preventing leaks. I want a gasket that creates a tight, consistent seal and stays secure even after long rides and engine heat cycles. If a gasket has poor sealing performance, I know I may end up dealing with messy oil leaks and repeated replacements. That is why I pay close attention to product quality and user feedback.
Durability and Heat Resistance
My Harley sees plenty of heat and road vibration, so I always consider durability. A good derby cover gasket should hold up over time without shrinking, cracking, or flattening out too quickly. I look for heat-resistant construction because that helps the gasket maintain its shape and sealing ability during demanding riding conditions.
Price vs Value
I do not always choose the cheapest gasket. Instead, I focus on value. A low-cost gasket might seem attractive, but if it fails early, I end up spending more on replacements and cleanup. I usually prefer to spend a little more on a gasket that offers better fit, longer life, and stronger sealing performance.
My Final Buying Tip
When I buy a Harley Davidson derby cover gasket, I make sure it fits my bike exactly, is made from quality material, and has a strong reputation for sealing well. For me, the best choice is the one that combines easy installation, long-lasting durability, and dependable leak prevention. That way, I can ride with confidence and avoid unnecessary maintenance.
Final Thoughts
In my experience, the Harley Davidson Derby Cover Gasket is a small part that plays a big role in keeping your bike sealed and running smoothly. I’ve found that choosing the right gasket and installing it carefully can help prevent leaks and save you from bigger problems later. My takeaway is simple: a quality gasket and proper maintenance go a long way in protecting your Harley’s performance.
Author Profile
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Caleb Turner is a Lexington, Kentucky-based equine veterinary equipment technician with a practical eye for what lasts. Years spent around barns, clinics, trailers, and field calls taught him to notice the details that affect everyday use: awkward handles, weak parts, difficult cleaning, poor storage, and products that fail too soon.
Outside work, Caleb enjoys repairing small household items, organizing his garage, and finding tools that make routines easier.
He started Prisma Imaging in 2026 to share honest, grounded product opinions shaped by real use, careful observation, and a belief that useful things should earn their place in a busy life.
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