Good gasket it’ll get five stars
Cometic Milwaukee-Eight Liquid-Cooled Motor Case Plug O-Ring 10-Pack - Harley M8
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 a watertight seal for your liquid-cooled Milwaukee-Eight motor case with this Cometic O-ring 10-pack. These plug O-rings are specifically sized and engineered to meet the demands of modern M8 V-twin engines, providing reliable sealing where it counts.
Why riders pick this
- Specifically for Milwaukee-Eight liquid-cooled motor cases
- OEM-specification sealing for dependable performance
- Withstands demands of modern V-twin engines
- 10-pack ideal for shops or stocking spares
When you're dealing with a liquid-cooled Milwaukee-Eight engine, proper sealing of the motor case is paramount to prevent leaks and maintain system integrity. These Cometic plug O-rings are manufactured to OEM specifications, offering a direct replacement that performs under the heat and pressure of your high-performance V-twin. The convenient 10-pack ensures you have plenty for any service or rebuild.
Precision Sealing for Liquid-Cooled M8s
- Specifically sized for Milwaukee-Eight liquid-cooled motor cases
- OEM-specification sealing for reliable leak prevention
- Engineered to meet modern V-twin performance demands
- Convenient 10-pack for shops or stocking spares
Critical for Liquid-Cooled Engine Maintenance
Maintaining the sealed environment of your liquid-cooled Milwaukee-Eight engine is crucial for its performance and longevity. These Cometic motor case plug O-rings are an essential component for any M8 owner performing engine work or routine maintenance. Trust in their OEM-equivalent quality to keep your V-twin sealed tight and running strong, preventing costly fluid loss and potential engine damage.
Specifications
- Brand: Cometic
- Manufacturer Part #: C10208
- Quantity: 10 per pack
- Length: 7 in
- Width: 6 in
- Height: 0.25 in
- Weight: 0.05 lbs
Common questions
Will these O-rings fit my air-cooled Milwaukee-Eight engine?
No, these Cometic O-rings are specifically designed for liquid-cooled Milwaukee-Eight (M8) motor cases. Please confirm your engine type before ordering.
How many O-rings are included in this pack?
This product comes with a 10-pack of motor case plug O-rings, which is suitable for shops, multi-bike owners, or keeping spares on hand for future service.
Are these O-rings equivalent to the OEM part?
Yes, Cometic manufactures these seals to match Milwaukee-Eight specifications, making them a direct replacement for reliable service on your liquid-cooled M8.
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 | 68-10208 |
| WEIGHT | 0.05 lb |
Great stuff, good price also.