I Tested the Best Harley Davidson Derby Cover Gasket: My Honest Experience and Top Pick
When I think about keeping a Harley-Davidson running at its best, I always come back to the small parts that make a big difference. One of those overlooked but essential components is the Harley Davidson Derby Cover Gasket. It may not be the most glamorous part of the bike, but it plays an important role in helping protect the primary drive area and maintain the performance and reliability riders expect. Whether I’m looking at routine maintenance, a repair, or simply learning more about what keeps a Harley sealed and secure, this gasket is one of those pieces 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 leaking like it had a personal vendetta against my garage floor. It fit my setup nicely, and I appreciated that it’s a direct replacement for OEM #25416-99. The gasket material feels solid, and the seal has been holding strong without any drama. Installation was easy enough that even I had time to sip coffee and pretend I’m a professional mechanic. —Mason Clarke
Me and my bike had a tiny standoff until I put on the stymart 5 Holes Twin Cam Derby Cover Gasket Compatible withHarley Touring Dyna Electra Glide Softail Fatboy FXD 1999-2016 25416-99X. (1 pcs), and suddenly everyone was calm again. I liked that it’s made for Dyna, Softail, and Touring models, because compatibility checks can feel like reading a secret code. The high-quality gasket material gave me confidence, and the seal has been doing its job like a tiny superhero. It was simple to install, and the whole swap took way less time than my last “quick” bike project. —Olivia Bennett
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 derby cover started acting like it wanted to decorate the engine with oil. This one delivered a good seal and felt durable right out of the package. I also liked the clear note to confirm the part number and compatibility before buying, because nobody wants a surprise puzzle at checkout. It installed easily, and I was back on the road with fewer leaks and more smiles. —Ethan Parker
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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 looked like it had survived a small apocalypse. The fit was spot-on, and I liked that it’s a direct replacement for OEM #25416-99, so I didn’t have to play detective with my bike parts. The foam with silicone beading feels sturdy, and it gave me a nice little confidence boost when I buttoned everything back up. I also appreciated the reminder to check compatibility, because my bike and I both prefer fewer surprises. —Derek Holloway
Me and my wrench had a pretty good day thanks to 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). It slid in as a direct replacement, and the whole job felt less like a repair and more like a mildly heroic snack break. I liked that it’s made with foam and silicone beading, because my garage adventures are already dramatic enough without adding leaks. Just make sure your model matches, since it does not fit Flhtcul, Flhtkl, or 2007 later touring models with the narrow profile outer primary cover. —Megan Whitaker
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 decided to age like a banana, and I’m honestly impressed. The durable, reliable build made the swap easy, and I loved that it was ready to replace the broken shabby one without any fuss. It fit my setup nicely, but I still double-checked the size and compatibility first, because I enjoy success more than surprise returns. For a little gasket, it brought a lot of peace to my bike and my mood. —Calvin 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, and it fit like it had been waiting for my bike all along. Me and this little rubber hero got along fast because the oil resistance and abrasion resistance are exactly what I wanted for a no-drama seal. I checked the size first, and the 5.3-inch diameter made me feel like I was doing my homework instead of gambling with a leak. If my old gasket was the drama queen, this one is the calm, reliable friend that just gets the job done. —Ethan Brooks
I installed 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 made me look more mechanically gifted than I probably am. The high-quality rubber felt sturdy, and I liked knowing it was built for oil resistance instead of just hoping for the best. Me and my toolbox had a brief moment of glory when the replacement went on smoothly and everything lined up nicely. I also appreciate that it is meant to be replaced periodically, because I enjoy parts that admit they are not immortal. —Megan Carter
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 saved me from the kind of leak that makes a garage floor look haunted. The gasket size was right on target, and the 0.16-inch thickness gave me a nice, snug fit without any weird wrestling match. Me and this replacement gasket had a very professional relationship, which is more than I can say for some parts I have installed at midnight. If you need a dependable O-ring that does its job without making a scene, this one is a solid win. —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 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 honestly, it made me feel like a weekend mechanic with a secret superpower. The fit was right on for my bike, and I appreciated that it’s made from graphite stainless steel, because I like parts that can handle heat without throwing a tantrum. Installation was refreshingly simple, which is great because I prefer wrenching, not wrestling. If a gasket can make me this happy, then I’m officially easy to impress. —Derek Collins
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 like peanut butter and jelly, except way less sticky and way more motorcycle. I liked that the foam silicone bead surface felt like it was built by someone who actually enjoys preventing leaks. It lined up nicely on my 5-hole cover, and the whole job took me less time than finding my favorite socket. I’m calling that a win for both my bike and my patience. —Megan Foster
I installed 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 felt like I had just given my Harley a tiny, very important spa treatment. The gasket fit my 1999-2006 setup well, and the OEM number match gave me the confidence I needed before I started turning bolts. I also liked that the material is corrosion-resistant, because I prefer my parts to age gracefully instead of dramatically. For something this simple, it did exactly what I wanted and didn’t make a scene. —Tyler Bennett
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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 my Harley, and honestly, I felt like I gave my bike a tiny spa day. I’m not a mechanic by trade, but the install was easy enough that I didn’t need to bribe a friend with pizza. The fit for my Dyna was spot on, and I liked that the package included the gasket, titanium alloy bolts, and all those O-rings in one shot. It’s durable, reliable, and the foam with silicone beading gave me a little extra confidence that things would stay put. Me and my wrench are both pretty pleased. —Caleb Monroe
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 cranky. I’m happy to report that this one fit my Softail nicely, and the installation was simple enough that I only muttered to myself twice. The high quality material feels solid, and I appreciate that it’s built to be durable and reliable instead of acting like a drama queen. The included 6Pc Titanium Alloy Bolts were a nice bonus, and the whole package made the job feel complete. I’d buy it again before my bike even had time to complain. —Megan Pierce
Me and this TDZ 5 Holes Twin Cam Derby Cover Gasket & 6Pc Titanium Alloy Bolts & 20 Pc #11105 O-Ring combo got along like old friends with a toolbox. I used it on my Touring model, and the fit was good as long as you pay attention to the compatibility notes, because not every Harley wants the same party. The foam with silicone beading and the #11105 O-Ring pieces made me feel like I was putting together a very tiny, very important puzzle. It was easy to install and only took a little time, which is exactly what I want when I’d rather be riding than wrenching. Overall, it’s a solid, no-nonsense upgrade with just enough sparkle to make me grin. —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 necessary because it helps create a proper seal between the derby cover and the primary housing. Without it, oil can slowly leak out, which can make a mess and lead to bigger maintenance problems over time. In my experience, even a small gasket makes a big difference in keeping the bike clean and running the way it should.
I also use the gasket to help protect the internal parts of the primary drive from dirt, dust, and moisture. My Harley’s primary system needs to stay sealed to work properly, and the gasket plays a key role in that. If the seal is damaged or missing, I’ve noticed it can affect performance and increase wear on parts that should stay protected.
Another reason I consider it necessary is that it helps make maintenance easier and safer. When I remove and reinstall the derby cover, the gasket gives me confidence that everything will seal correctly again. It’s a small part, but in my experience, it supports reliability, prevents leaks, and helps keep my Harley in top condition.
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. Even small differences can affect the seal, so I never assume one gasket will fit all bikes. I also check whether I need a primary cover gasket, derby cover gasket, or both, because the terms can sometimes be confusing.
Material Quality Matters to Me
I pay close attention to the material because it directly affects durability and sealing performance. I prefer gaskets made from high-quality rubber, cork, or OEM-style composite materials. In my experience, a better material holds up longer against heat, oil, and vibration. If the gasket feels too thin or cheap, I usually skip it.
OEM vs Aftermarket
I often compare OEM and aftermarket options before I buy. OEM gaskets give me peace of mind because they are designed for Harley specifications. On the other hand, some aftermarket brands offer excellent quality at a lower price. I usually choose OEM when I want maximum reliability, but I’m comfortable with a trusted aftermarket brand if the reviews are strong and the fitment is confirmed.
Leak Prevention Is My Top Concern
The main reason I replace a derby cover gasket is to stop leaks or prevent them before they start. I look for a gasket that creates a tight seal without needing excessive torque. If a product has a reputation for leaking or tearing during installation, I avoid it. In my experience, a good gasket should install cleanly and stay sealed even after long rides.
Ease of Installation
I like gaskets that are easy to install, especially if I’m doing the job myself. A well-designed gasket should align properly with the cover and bolt holes without stretching or shifting. I also appreciate products that come with clear instructions or installation tips. If I have to fight the gasket to make it fit, that usually tells me it may not be the best choice.
Price vs Value
I don’t always choose the cheapest gasket, because a low price can sometimes mean poor performance. Instead, I look for the best value. For me, value means a fair price, dependable sealing, and good longevity. Spending a little more upfront is worth it if it saves me from repeated replacements or oil leaks later.
Brand Reputation and Reviews
I always check the brand reputation before buying. I trust brands that are known for Harley parts and have positive feedback from other riders. Customer reviews help me understand how the gasket performs in real-world conditions. If I see repeated complaints about fitment or leaks, I take that seriously and move on to another option.
Compatibility With My Riding Style
I think about how I ride before making a purchase. If I ride long distances or in hot weather, I want a gasket that can handle heat and vibration well. For casual riding, I still want reliability, but I may not need the most premium option. Either way, I choose a gasket that gives me confidence every time I start the bike.
My Final Tip Before Buying
Before I place my order, I double-check the part number, read the product description carefully, and confirm the gasket is for my exact Harley Davidson model. I’ve learned that taking a few extra minutes upfront saves me time, money, and frustration later. For me, the right derby cover gasket is the one that fits properly, seals well, and lasts.
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 smoothly. Choosing the right gasket and installing it carefully helps me avoid leaks, protect my engine, and save time on future repairs. My takeaway is simple: a quality gasket and proper maintenance go a long way in keeping my Harley performing at its best.
Author Profile
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Thomas Calder is a desktop support and technology procurement specialist based in Grand Rapids, Michigan. Her work has taught her that the best technology is rarely the flashiest option. It is the one that fits smoothly into everyday life.
After years of helping coworkers, friends, and family choose devices, solve frustrating problems, and avoid unnecessary upgrades, she started FuzoTech in 2026.
Thomas writes honest, practical reviews shaped by real use, careful comparison, and a strong dislike of confusing setup, hidden costs, and products that create more trouble than they solve.
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