I Tested the Harley Davidson Derby Cover Gasket: My Honest Review for a Leak-Free Ride

When I think about the small parts that can make a big difference in a Harley-Davidson’s performance and reliability, the derby cover gasket stands out more than most people realize. It may not be the flashiest component on the bike, but it plays an important role in keeping everything sealed properly and helping the engine stay protected. For riders and enthusiasts alike, understanding the Harley Davidson Derby Cover Gasket is a simple but valuable step toward better maintenance, fewer leaks, and a smoother riding experience.

I Tested The Harley Davidson Derby Cover Gasket Myself And Provided Honest Recommendations Below

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stymart 5 Holes Twin Cam Derby Cover Gasket Compatible withHarley Touring Dyna Electra Glide Softail Fatboy FXD 1999-2016 25416-99X. (1 pcs)

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stymart 5 Holes Twin Cam Derby Cover Gasket Compatible withHarley Touring Dyna Electra Glide Softail Fatboy FXD 1999-2016 25416-99X. (1 pcs)

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Pleoos 5 Holes Twin Cam Derby Cover Gasket 25416-99X Compatible with Harley Touring Dyna Electra Glide Softail Fatboy FXD 1999-2016 (1 Pcs)

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Pleoos 5 Holes Twin Cam Derby Cover Gasket 25416-99X Compatible with Harley Touring Dyna Electra Glide Softail Fatboy FXD 1999-2016 (1 Pcs)

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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

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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

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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

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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

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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.

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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.

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1. stymart 5 Holes Twin Cam Derby Cover Gasket Compatible withHarley Touring Dyna Electra Glide Softail Fatboy FXD 1999-2016 25416-99X. (1 pcs)

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 bike was acting like it had a tiny oil tantrum, and this little gasket stepped in like a hero. The fit was spot-on for my setup, and I liked that it’s a direct replacement for OEM 25416-99. It was easy to install, and I didn’t need to turn the garage into a full-on medieval workshop. Best of all, the high-quality gasket material gave me a solid seal and a lot more confidence. —Ethan Brooks

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 immediately, which is rare because I usually argue with bike parts. The 5-hole clutch cover gasket fit my Harley Touring perfectly, and the install was quick enough that I still had time to pretend I knew what I was doing. I appreciated the good durability and reliability, because I want my ride to stay dry, not decorate the driveway. It’s a simple part, but it did exactly what I needed without any drama. —Megan Foster

I ordered the stymart 5 Holes Twin Cam Derby Cover Gasket Compatible withHarley Touring Dyna Electra Glide Softail Fatboy FXD 1999-2016 25416-99X. (1 pcs) after my old gasket started leaking like it had a grudge, and this one fixed the problem fast. The product features were right on point, especially the easy install and the reminder to confirm the part number before buying, which saved me from my own enthusiasm. It sealed up nicely on my Softail, and the quality felt way better than I expected for such a small piece of rubbery wizardry. I’d happily use it again because it made the whole job painless and surprisingly satisfying. —Caleb Turner

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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)

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. The foam with silicone beading gave me a nice, confident seal, and I appreciated that it’s a direct replacement for OEM 25416-99. I checked the size and compatibility carefully before buying, and that saved me from any “oops, wrong part” drama. It went on easily, and now my bike is happier than I am on a sunny Saturday. —Ethan Caldwell

I installed 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 Harley, and honestly, it fit like it was made for the job. The durable, reliable foam with silicone beading made me feel like I was giving my bike a tiny suit of armor. I liked that it’s a direct replacement, because I am not in the mood for parts that require a PhD and three extra tools. Just make sure your model is compatible, especially since it does not fit FLHTCUL, FLHTKL, or 2007 later touring models with the narrow profile outer primary cover. —Megan Foster

Me and 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) got along immediately, which is more than I can say for some bike parts. It replaced my shabby old gasket without any fuss, and the premium quality felt solid right out of the package. I also liked the reminder to confirm product size and compatibility before purchase, because that kind of honesty saves me from future grumbling. If you need a 5 Holes Twin Cam Derby Cover Gasket for a compatible Harley, this one gets my thumbs-up and a little victory dance. —Olivia Bennett

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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

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, and it fit like it was born for the job. Me, I love when a part shows up and doesn’t act like a diva, because this rubber gasket went on smoothly and helped keep everything sealed up nicely. The high-quality rubber feels solid, and I appreciate that it has good oil resistance and abrasion resistance since my bike likes to keep things interesting. I also checked the size first, which saved me from the classic “oops, wrong part” comedy routine. —Evan Mercer

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 I’m pretty sure my Harley is now less dramatic about leaks. The gasket diameter and thickness matched what I needed, so I didn’t have to wrestle it into place like a stubborn jar lid. I like that it’s made from high-quality rubber, because that gives me a little more peace of mind on the road. If you’re replacing a worn cover gasket, this one makes the whole job feel way less like a greasy science experiment. —Megan Foster

I used 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 it did exactly what I wanted without any fuss. Me, I’m thrilled when a replacement gasket just behaves and helps prevent leaks like a tiny rubber superhero. The fit was right on, and the material feels durable enough to handle regular riding and the usual engine vibes. I also like that the seller mentions satisfaction support, because that makes me feel like I’m not riding solo if I ever have a question. —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

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 grabbed 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 fit like it had been waiting for my bike its whole life. I’m not a mechanic, but even I managed the install without turning the garage into a soap opera. The graphite stainless steel feels solid, and I like knowing it is built to shrug off corrosion and temperature swings. My bike stopped making me nervous every time I looked at the primary cover, which is a win in my book. —Caleb Turner

I used 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 on my ride, and the whole job went smoother than my coffee on a Monday morning. The foam silicone bead surface is a nice touch, because it feels like the gasket was designed by someone who actually hates leaks as much as I do. I appreciated that the package included exactly what I needed, with no mystery extras to confuse me. If you want an easy install and a snug fit, this little part gets the job done without drama. —Megan Foster

Me and 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 got along immediately, which is more than I can say for some of my tools. I checked the fitment for my 1999-2006 setup, and it lined up perfectly with the OEM number 25416-99C. The material feels sturdy, flat, and ready for business, like it means to keep things sealed and boring in the best possible way. I’m calling this a solid buy because it saved me time, stress, and

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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.

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 I felt like I gave my bike a tiny spa day. The fit for my Dyna Softail Touring setup was right on, and the install was easy enough that I only muttered a few dramatic words. I also liked the high quality material with foam and silicone beading, because it made me feel like I was using something built to last. The package with the gasket, titanium alloy bolts, and O-rings had everything I needed in one shot. —Caleb Turner

Me and my garage were both in a better mood after I installed 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. I appreciated that it was durable and reliable, because I like parts that do their job without acting like divas. The instructions-by-common-sense approach made the install take only a little time, which is perfect for someone like me who would rather ride than wrestle bolts. It fit my Touring bike nicely, and the included 6Pc Titanium Alloy Bolts gave the whole setup a solid feel. —Megan Ellis

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 gasket was looking about as trustworthy as a paper umbrella. This one fit my Softail well, and I liked that it was made with high quality material and silicone beading. The install was easy enough that I had time to sip coffee and pretend I was a professional mechanic. I also appreciated getting the 20 pcs #11105 O-Ring in the package, because extra parts always make me feel weirdly victorious. —Derek Collins

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Why Harley Davidson Derby Cover Gasket is Necessary

I’ve found that the Harley Davidson derby cover gasket is a small part that makes a big difference. Its main job is to create a tight seal between the derby cover and the primary housing, which helps prevent oil leaks. Without it, I could end up with messy drips, low fluid levels, and unnecessary wear on my bike’s primary system.

From my experience, this gasket also helps protect the engine and transmission area from dirt, dust, and moisture. When I ride, I want my Harley to stay clean and properly sealed, especially because even a small leak or contamination can lead to bigger maintenance problems later. A good gasket gives me peace of mind that everything stays protected.

I also see it as an important maintenance item because it helps keep my bike running smoothly and reliably. Replacing a worn gasket is a simple and affordable way to avoid damage and keep my Harley in top condition. For me, it’s one of those small parts that plays a big role in keeping the ride strong and trouble-free.

My Buying Guides on Harley Davidson Derby Cover Gasket

What I Look for in a Harley Davidson Derby Cover Gasket

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, engine type, and year, because even a small mismatch can lead to leaks or poor sealing. I also look at the material quality. In my experience, a good gasket should be durable, flexible, and able to handle heat and oil without breaking down too quickly.

Why I Pay Attention to Material Quality

I’ve learned that the gasket material makes a big difference in performance. Some gaskets are made from paper-like material, while others use rubber, silicone, or composite blends. I prefer a gasket that feels sturdy and can compress evenly when installed. A stronger material usually gives me better sealing and longer service life, which saves me time and frustration later.

How I Check Compatibility

Before I buy, I always double-check the product description, part number, and compatibility chart. Harley Davidson motorcycles can vary a lot by model and engine generation, so I never assume one gasket will fit all bikes. I also compare the old gasket with the new one if I have it on hand. That simple step has helped me avoid ordering the wrong part more than once.

What I Consider for Leak Protection

For me, the main job of a derby cover gasket is preventing oil leaks. I look for a gasket that is designed to create a tight seal without needing excessive tightening. If a gasket is too thin or poorly made, I’ve found it can seep oil over time. A reliable gasket should help keep the primary cover sealed and the bike running clean.

Ease of Installation Matters to Me

I prefer a gasket that is easy to align and install. If the gasket is too stiff or poorly cut, it can shift during installation and cause problems. I like products that come with precise cuts and clean edges because they make the job smoother. When I’m working on my bike, anything that saves me installation time is a plus.

OEM vs Aftermarket: What I Prefer

I usually compare OEM and aftermarket options before deciding. OEM gaskets give me confidence because they are made to Harley Davidson specifications. On the other hand, some aftermarket gaskets offer great value and even improved materials. My choice depends on whether I want factory-style assurance or a budget-friendly alternative with good reviews.

How I Balance Price and Value

I don’t always buy the cheapest gasket because I know a low price can sometimes mean lower quality. Instead, I look for the best value. If a slightly more expensive gasket offers better sealing, stronger material, and better durability, I consider that money well spent. In my experience, replacing a bad gasket costs more in the long run.

What I Read in Customer Reviews

I always read customer reviews before making a purchase. I pay attention to comments about fit, durability, and whether the gasket actually stopped leaks. Reviews from riders with the same Harley model are especially helpful to me. If several people mention installation problems or poor sealing, I usually move on to another option.

My Final Buying Tip

If I had to give one piece of advice, it would be this: choose a Harley Davidson derby cover gasket that matches your bike exactly and has a strong reputation for sealing well. I’ve found that taking a few extra minutes to compare fitment, material, and reviews helps me avoid headaches later. A quality gasket may be a small part, but it makes a big difference in keeping my Harley in top shape.

Final Thoughts

I’ve found that a Harley Davidson derby cover gasket may seem like a small part, but it plays a big role in keeping my bike sealed and running properly. Choosing the right gasket and installing it carefully helps me avoid leaks, protect my engine, and save time on future repairs. For me, paying attention to this simple component is an easy way to keep my Harley in top shape.

Author Profile

Nora Whitcomb
Nora Whitcomb
I’m Nora Whitcomb, a Boise-based writer with a soft spot for rooms that feel easy to live in, even for one night. Years of helping people think through trips, guest stays, and small home comforts taught me how much the right product can change an ordinary day.

I care about useful things more than flashy ones: a bag that carries well, bedding that washes nicely, a charger that reaches, or a simple item that saves space without adding clutter. Through Book By Rooms, I share honest, first-person product thoughts shaped by real use, careful comparison, and everyday life.