✓ VERIFIED
Jan 16, 2020
Almost identical to OEM. Good fit. I did miss that they are sold as each and not as a pair. Small detail and my fault but it did slow my project down a bit.
COMETIC
SKU: 68-10201
Cometic Milwaukee-Eight Coolant Manifold O-Ring 10-Pack - Harley Milwaukee-Eight
$62.000,00
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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 Milwaukee-Eight engine sealed tight with this 10-pack of Cometic coolant manifold O-rings. Engineered to OEM specifications, these seals are a direct replacement for your Harley-Davidson M8, ensuring proper coolant system function and preventing leaks.
Why riders pick this
- OEM-specification material for reliable sealing
- Direct replacement for Harley-Davidson M8 coolant manifold
- Prevents coolant leaks and maintains system integrity
- Convenient 10-pack for multiple services or spares
When you're servicing the cooling system on your Milwaukee-Eight, don't skimp on the seals. These Cometic O-rings are built to the same exacting standards as the factory part, providing a reliable and long-lasting seal for your coolant manifold. A 10-pack ensures you have plenty on hand for current maintenance or future needs.
Reliable Sealing for Your M8
- Direct replacement for Harley-Davidson OEM part
- Manufactured to OEM specifications for dependable fit and performance
- Ensures proper sealing of the coolant manifold on Milwaukee-Eight engines
- Convenient 10-pack for multiple services or keeping spares
Smart Maintenance for Performance Baggers
Whether you're doing a routine fluid change or a more extensive engine build, having the right gaskets and seals is critical. These Cometic O-rings are essential for maintaining the integrity of your M8's liquid-cooled system. They're a smart choice for shops and riders who demand reliability from every component.
Specifications
- Brand: Cometic
- Manufacturer Part #: C10201
- OEM Part #: 11900090
- Quantity: 10 per pack
- Length: 7 in
- Width: 6 in
- Height: 0.25 in
- Weight: 0.1 lbs
Common questions
Will these O-rings fit my Twin Cam or Evolution engine?
No, these Cometic coolant manifold O-rings are specifically designed for Milwaukee-Eight (M8) engines. Twin Cam and Evolution models require different seals.
How many O-rings are included in this pack?
This product includes a 10-pack of coolant manifold O-rings, ideal for multiple services or stocking up on spares.
Are these O-rings equivalent to the Harley-Davidson OEM part?
Yes, Cometic manufactures these O-rings to meet or exceed OEM specifications, making them a direct replacement for the factory part on your 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 | 68-10201 |
| WEIGHT | 0.1 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.87
15 RATINGS
5★
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✓ VERIFIED
Oct 18, 2021
Great seals and gaskets do the job once when you use quality gaskets
✓ VERIFIED
Sep 26, 2019
Seal good and I haven't had any issues..
✓ VERIFIED
Jun 27, 2025
It worked like it was suppose to, delivery was quick. <br />Pleased.
✓ VERIFIED
Dec 19, 2023
Just what I needed
Needed these when changing out intake manifold. They worked perfect for my ‘03 sporty.
✓ VERIFIED
Jun 12, 2023
Cometic from here on out
These seals are the only ones I'll use. others came close but, for me, these are best.
