✓ VERIFIED
Apr 17, 2025
Gasket quality
Great gasket kit over delivered in the quality of the gasket set great job
COMETIC
SKU: 68-10226
Cometic Milwaukee 8 Rocker Box Rebuild Kit - Harley-Davidson M8
$76.72
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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.
When it's time to service your Milwaukee-Eight top end, trust the Cometic M8 Rocker Box Rebuild Kit to provide all the necessary gaskets and seals. This comprehensive kit ensures a leak-free and reliable reassembly of your Harley-Davidson's rocker boxes.
Why riders pick this
- Complete gasket and seal set for M8 rocker boxes
- Essential for Milwaukee-Eight top-end maintenance
- Ensures a reliable, leak-free reassembly
- Direct replacement for stock components
Maintaining the top end of your Milwaukee-Eight engine is crucial for its long-term performance and reliability. The Cometic M8 Rocker Box Rebuild Kit includes every gasket and seal required to properly service or rebuild your rocker boxes. Whether you're performing routine maintenance, a cam swap, or addressing a leak, this kit provides the precision-engineered components you need for a factory-level seal.
Precision Sealing for Your M8 Engine
- Complete set of gaskets and seals for Milwaukee-Eight rocker boxes
- Designed for direct replacement during top-end service
- Ensures a leak-free seal and reliable engine operation
- High-quality components from a trusted gasket manufacturer
Essential for M8 Top-End Work
This Cometic kit is an indispensable part of any top-end work on your Milwaukee-Eight. It's specifically formulated for the M8 engine platform, guaranteeing proper fitment and performance. Always refer to your Harley-Davidson service manual for correct torque specifications and installation procedures to ensure a successful rebuild. This kit is a must-have for riders performing cam upgrades or any deep engine maintenance.
Specifications
- Brand: Cometic
- Manufacturer Part #: C10226
- Length: 8 in
- Width: 8 in
- Height: 2 in
- Weight: 1 lbs
Common questions
What is included in the Cometic Milwaukee 8 Rocker Box Rebuild Kit?
This kit contains all the necessary gaskets and seals required to service or rebuild the rocker boxes on your Harley-Davidson Milwaukee-Eight engine.
Will this kit fit my Harley-Davidson Twin Cam engine?
No, this Cometic kit is specifically designed for Milwaukee-Eight (M8) engines. Twin Cam engines utilize different gasket sets and this kit will not be compatible.
Do I need any special tools for installing these gaskets?
While standard hand tools are sufficient for much of the process, a gasket scraper for surface preparation and a torque wrench for proper fastener tightening are recommended. Always follow your Harley-Davidson service manual for detailed instructions.
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 | Engine |
| SKU | 68-10226 |
| WEIGHT | 1.0 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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✓ 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
