✓ VERIFIED
Aug 29, 2025
screw seal and shifter seal came with the kit.. Picture needs update to what is in the kit. Now I have extra screwseals and shifter shaft seal which is always a good thing.
COMETIC
SKU: 68-9447
Cometic Evolution O-Ring 25-Pack - Harley Evolution
$5.19
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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.
Ensure robust sealing across your Harley Evolution engine with this Cometic Evo O-Ring 25-Pack. These OEM-replacement specification O-rings are ideal for comprehensive engine rebuilds and multi-bike service.
Why riders pick this
- 25-pack quantity for multiple engine applications
- OEM replacement specification for reliable fit
- Designed for Evolution and compatible V-twin engines
- Ensures critical seals to prevent fluid leaks
Cometic O-rings are engineered to meet or exceed original equipment specifications, providing dependable sealing for various applications within Evolution and compatible big-twin V-twin engines. This generous 25-pack ensures you have plenty of fresh seals on hand for any task, from routine maintenance to full engine overhauls.
Reliable Sealing for V-Twin Engines
- 25-pack quantity for extensive engine service and inventory
- Manufactured to OEM replacement specifications for a precise fit
- Designed for Evolution and compatible V-twin engines
- Provides a critical seal to prevent leaks and maintain engine integrity
Confidence in Every Rebuild
When working on an Evolution engine, using high-quality sealing components is non-negotiable for long-term reliability. These Cometic O-rings offer the peace of mind that comes with precision manufacturing and materials chosen to withstand the rigors of a V-twin environment. They are an essential item for any builder or enthusiast committed to maintaining their Harley's performance and preventing costly oil leaks.
Specifications
- Brand: Cometic
- Manufacturer Part #: C9447
- Quantity: 25 per pack
- Weight: 0.2985 lbs
Common questions
Why are these O-rings sold in a 25-pack?
This pack quantity is designed to serve shops and builders who perform multiple engine rebuilds or require a convenient way to maintain a spare inventory of common O-rings.
Will this O-ring fit Twin Cam or Milwaukee-Eight engines?
No, this O-ring is specific to Evolution-based engines. Twin Cam and Milwaukee-Eight engines utilize different sealing components. Always confirm fitment for your specific model.
Is this the same quality as an OEM Harley O-ring?
Cometic manufactures these O-rings to OEM specifications, ensuring they function as a direct replacement for genuine Harley seals, offering comparable fit and performance.
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 | 68-9447 |
| WEIGHT | 0.3 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
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10 RATINGS
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✓ VERIFIED
Apr 15, 2020
Nice gasket kit comes with everything you need to do Inner & Outer Primary. Even came with an unexpected shifter seal so, now I've got an extra! Oops! Cometic makes some pretty good gaskets!
✓ VERIFIED
May 3, 2025
Quality
Quality, and complete everything included
✓ VERIFIED
Feb 1, 2024
Wonderful service perfect fit excellent
✓ VERIFIED
Sep 27, 2021
Great gaskets
✓ VERIFIED
Jun 19, 2019
5 Stars
