✓ VERIFIED
May 16, 2026
not what I needed. description wasn't very clear but not worth sending back. oh well just have to be more careful next time
COMETIC
SKU: 68-9258
Cometic Big Twin Engine Seal 5-Pack - Panhead, Shovelhead, Evolution
$12.25
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About Cometic
Cometic Gasket manufactures multi-layer steel head gaskets and complete gasket kits in Concord, Ohio. On a built V-twin running higher compression or a big-bore kit, the MLS head gasket is what keeps the top end sealed — which is why Cometic is the default spec on so many engine builds.
Keep your classic Harley-Davidson running strong with this Cometic Big Twin Engine Seal 5-Pack. Engineered as an OEM-replacement, these seals are designed for Panhead, Shovelhead, and Evolution Big Twin engines. Ensure a tight, reliable seal where it matters most on your vintage or modern classic.
Why riders pick this
- 5-pack for multiple repairs or spares
- OEM replacement specification for precise fit
- Fits Panhead, Shovelhead, and Evo Big Twin engines
- Helps prevent leaks and maintain engine integrity
When maintaining or rebuilding a Panhead, Shovelhead, or Evolution Big Twin engine, using high-quality seals is paramount for preventing leaks and preserving engine integrity. This Cometic Big Twin Engine Seal 5-Pack provides the precision and durability needed for these iconic V-twin powerplants. Each seal is manufactured to OEM specifications, ensuring a perfect fit and dependable performance, whether you're working on a daily rider or a show bike.
Precision Engineered for Classics
- Convenient 5-pack quantity for multiple service points or spares
- OEM replacement specification for accurate fit and performance
- Designed for Panhead, Shovelhead, and Evolution Big Twin engines
- Helps prevent leaks and maintain proper engine function
Essential for Engine Longevity
Don't compromise on critical engine seals. This Cometic 5-pack ensures you have reliable components on hand for routine maintenance or more extensive rebuilds. It's an indispensable part for anyone dedicated to preserving the performance and longevity of their classic Harley-Davidson Touring, Softail, or Dyna with a Panhead, Shovelhead, or Evo Big Twin engine.
Specifications
- Brand: Cometic
- Manufacturer Part #: C9258
- Quantity: 5 per pack
- Weight: 0.04 lbs
Common questions
How many seals are included in this pack?
This Cometic product is sold as a 5-pack, providing multiple seals for various engine points or spares for future maintenance on your Panhead, Shovelhead, or Evo Big Twin.
Will these seals fit Twin Cam or Milwaukee-Eight engines?
No, these seals are specifically designed for Panhead, Shovelhead, and Evolution Big Twin engines. Twin Cam and Milwaukee-Eight (M8) engines use different seal specifications.
Are these seals genuine OEM Harley-Davidson parts?
Cometic manufactures these seals to meet or exceed OEM specifications as direct replacements for Panhead, Shovelhead, and Evo Big Twin engines, offering aftermarket quality and reliability.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | Cometic |
| TYPE | Gaskets/Seals |
| SKU | 68-9258 |
| WEIGHT | 0.04 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.36
14 RATINGS
5★
11
4★
0
3★
1
2★
1
1★
1
✓ VERIFIED
Mar 8, 2026
Gasket
Working fine was for my brother's bike
✓ VERIFIED
Oct 25, 2024
Works Fine at a lower cost
I usually have an OEM from Harley Davidson, I have used this twice on my 04 Electraglide, no leaks or issues. At a much lower price.
✓ VERIFIED
Jun 8, 2024
A mediocre gasket
I didn’t use this gasket after removing the derby and seeing the Harley gasket that I removed. No comparison in quality. I ended up going to the local dealer and bought an O.E. gasket.
✓ VERIFIED
Jun 6, 2023
A good buy
The gasket fit nicely and no leaks so far . The fitment was spot on .
✓ VERIFIED
May 4, 2023
There is nothing on them indicating they are actually Cometic gaskets. Are they Substitutes?
