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 Primary Housing Gasket - Harley Milwaukee-Eight
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 leak-free primary with this Cometic primary housing gasket, specifically designed for Harley-Davidson Milwaukee-Eight engines. This direct OEM replacement provides a precise fit and reliable seal for your primary cover. It's an essential component for any primary service on your M8-equipped Touring, Softail, or Dyna.
Why riders pick this
- Direct OEM replacement for M8 primary housing
- Ensures a reliable, leak-free primary cover seal
- Essential for any primary service or upgrade
- Designed for Milwaukee-Eight Touring, Softail, Dyna
When you're digging into the primary of your Milwaukee-Eight, having a fresh gasket is non-negotiable for a clean, leak-free reassembly. This Cometic primary housing gasket is engineered to be a direct replacement for the OEM part, ensuring it fits perfectly and provides the seal you need. Whether you're upgrading your clutch, swapping out your compensator, or just performing routine fluid changes, a new primary gasket is cheap insurance against costly leaks.
Precision Sealing for Your Primary
- Direct OEM replacement for Milwaukee-Eight primary covers
- Engineered for a precise fit and reliable seal
- Essential for preventing fluid leaks
- Ideal for primary service and upgrades
Maintaining Your M8 Drivetrain
The primary drive system on your Harley is subjected to significant forces and requires robust sealing. This Cometic gasket delivers that reliability, preventing oil from escaping and contaminants from entering. Always replace your primary gasket when the cover is removed to maintain the integrity of your drivetrain. This single-pack gasket is ready for your next project, ensuring your M8 runs as clean as it should.
Specifications
- Brand: Cometic
- Manufacturer Part #: C10211
- OEM Part #: 25700455
- Length: 8 in
- Width: 8.5 in
- Height: 0.25 in
- Weight: 0.15 lbs
Common questions
Will this gasket fit my Twin Cam Harley?
No, this Cometic primary housing gasket is specifically designed for Milwaukee-Eight (M8) engines and will not fit Twin Cam models.
What OEM part number does this gasket replace?
This Cometic gasket is a direct replacement for Harley-Davidson OEM part number 25700455.
Do I need to remove the primary cover to install this?
Yes, the primary cover must be unbolted and removed to properly access and replace the primary housing gasket.
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 | 68-10211 |
| WEIGHT | 0.15 lb |
Great seals and gaskets do the job once when you use quality gaskets
Seal good and I haven't had any issues..
It worked like it was suppose to, delivery was quick. <br />Pleased.
Just what I needed
Needed these when changing out intake manifold. They worked perfect for my ‘03 sporty.
Cometic from here on out
These seals are the only ones I'll use. others came close but, for me, these are best.