✓ VERIFIED
Apr 17, 2025
Gasket quality
Great gasket kit over delivered in the quality of the gasket set great job
COMETIC
SKU: 68-10189
Cometic Milwaukee-Eight Rocker Box O-Ring Gasket Viton 10-Pack - Harley Milwaukee-Eight
$39.000,00
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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.
This Cometic rocker box assembly gasket for Harley Milwaukee-Eight engines features durable Viton O-ring construction, provided in a convenient 10-pack. Designed as a direct OEM replacement, these gaskets ensure reliable sealing for V-Twin applications, especially under elevated temperatures.
Why riders pick this
- Durable Viton O-ring construction
- 10-pack for shops and frequent maintenance
- Specifically for Milwaukee-Eight rocker boxes
- Direct OEM replacement for reliable fitment
When it comes to maintaining the integrity of your Milwaukee-Eight engine, quality O-rings are non-negotiable. Cometic's Viton O-ring gaskets offer superior heat resistance and durability compared to standard materials, providing a long-lasting and leak-free seal for your rocker box assemblies. This 10-pack is an excellent value for shops or riders who perform frequent maintenance.
Superior Viton Sealing
- Features robust Viton O-ring construction
- Includes 10 individual gaskets for multi-use or spares
- Specifically designed for Milwaukee-Eight (M8) rocker box assemblies
- Direct OEM replacement for reliable fitment
Ready for the Road Ahead
Using high-quality sealing components like these Cometic Viton O-rings is crucial for preventing oil leaks and maintaining optimal engine performance. The enhanced material properties of Viton ensure these gaskets can withstand the demanding conditions inside a V-twin engine. Stock up and ride with confidence, knowing your rocker boxes are properly sealed.
Specifications
- Brand: Cometic
- Manufacturer Part #: C10189
- Quantity: 10 per pack
- Material: Viton O-ring
- Length: 7 in
- Width: 6 in
- Height: 0.25 in
- Weight: 0.05 lbs
Common questions
Will this work on Twin Cam engines?
No, this Viton O-ring gasket is specific to Milwaukee-Eight (M8) engines. Twin Cam rocker boxes require different part numbers and gasket types.
Why is it sold in a 10-pack?
The 10-pack quantity is ideal for professional shops, fleet maintenance, and riders who prefer to stock spares for multiple bikes or anticipate future service intervals.
What material is the O-ring?
The O-ring is constructed from Viton, which provides superior heat resistance and durability compared to standard rubber materials, making it ideal for engine applications.
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 | 68-10189 |
| WEIGHT | 0.05 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.67
18 RATINGS
5★
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1
✓ VERIFIED
Jun 3, 2023
DONT FOLLOW PRINTED INSTRUCTIONS!
DON’T FOLLOW THE INSTRUCTIONS ON THE BOX!!! It says recommended torque is 42 lb/ft. You know what happened at 32lb/ft? One of bolts broke! And I was lucky there was long enough piece sticking out to remove it without drilling out! Check photos.
✓ VERIFIED
Feb 21, 2022
Fits well!
✓ VERIFIED
Sep 10, 2021
Quality part great service and got it ahead of time great place
✓ VERIFIED
Jun 7, 2021
No leaks!!<br />Ordering was a breeze. Shipping was fast and I live way out in the middle of the Pacific Ocean, Hawaii. Price was much better than competition.
✓ VERIFIED
Nov 1, 2020
Great gaskets. Bike has been running great ever since I installed these last week, about 270 miles on em, no issues
