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COMETIC
SKU: 68-10170
Cometic Twin Cam EST Gasket Kit 103" Cooled .040" Head Gasket - Harley Twin Cam
$181.15
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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 for a top-end refresh or a full engine overhaul on your Twin Cam 103" cooled engine, this Cometic EST gasket kit provides everything you need. Engineered for precise fitment and lasting durability, it ensures a leak-free seal across all critical areas. This comprehensive kit is essential for maintaining the performance and reliability of your Harley Twin Cam.
Why riders pick this
- Complete engine overhaul gasket kit
- MLS head gaskets for enhanced sealing
- Steel Viton-coated base gaskets included
- Blue Viton valve stem seals for reliability
- Designed for Twin Cam EST 103" cooled engines
This Cometic Twin Cam EST gasket kit is specifically tailored for 103" cooled engines, featuring a .040" thick head gasket and a 3.875" bore. It's a complete overhaul solution, meaning you'll have all the necessary components to properly seal your engine during a rebuild. From the crucial MLS head gaskets to the robust Viton-coated base gaskets and valve stem seals, every piece is designed for high performance and reliability.
Comprehensive Engine Sealing
- Includes MLS head gaskets for superior sealing
- Steel Viton-coated base gaskets for durability
- Blue Viton valve stem seals for optimal performance
- Complete kit with all necessary gaskets, seals, washers, and o-rings
Rebuild with Confidence
A successful engine rebuild hinges on the quality of its sealing components. This Cometic EST gasket kit provides that assurance for your Twin Cam 103" cooled engine. The multi-layer steel head gaskets are particularly important for handling the heat and pressure of a hard-working V-twin. Ensure you verify your engine's exact specifications before ordering to guarantee a perfect fit and a solid foundation for many miles to come.
Specifications
- Brand: Cometic
- Manufacturer Part #: C10170
- Engine: Twin Cam EST 103" cooled
- Head Gasket Thickness: .040"
- Bore: 3.875"
- Length: 9 in
- Width: 7.6 in
- Height: 2.1 in
- Weight: 0.915 lbs
Common questions
What components are included in this Cometic EST gasket kit?
This comprehensive kit includes all gaskets, seals, washers, and o-rings necessary for a complete engine overhaul, such as MLS head gaskets, steel Viton-coated base gaskets, and blue Viton valve stem seals.
Is this gasket kit compatible with all Twin Cam engines?
This specific kit is designed for Twin Cam EST 103" cooled engines with a 3.875" bore. It's crucial to verify your engine displacement, cooling type, and bore size to ensure proper fitment before purchasing.
What are the benefits of MLS head gaskets?
MLS (multi-layer steel) head gaskets provide superior sealing compared to traditional gaskets, especially under the high temperatures and pressures common in performance Twin Cam engines. They offer excellent durability and resistance to leaks.
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 | 68-10170 |
| WEIGHT | 0.91 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.6
15 RATINGS
5★
12
4★
2
3★
0
2★
0
1★
1
✓ VERIFIED
Nov 16, 2022
I've been using cometic gaskets for a number of years. They never fail me they are a great gasket maker
✓ VERIFIED
Feb 7, 2022
Seems to be fine
✓ VERIFIED
Jul 28, 2020
Fit perfectly
✓ VERIFIED
Apr 30, 2020
Good
✓ VERIFIED
Mar 31, 2020
5 Stars
