✓ VERIFIED
May 16, 2026
not what I needed. description wasn't very clear but not worth sending back. oh well just have to be more careful next time
COMETIC
SKU: 68-9155
Cometic Twin Cam EST Complete Engine Gasket Kit - Harley Twin Cam
$73.17
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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.
The Cometic Twin Cam EST Gasket Kit is a comprehensive engine overhaul set designed for Harley-Davidson Twin Cam motors. This kit includes everything you need for a complete gasket replacement, from MLS head gaskets to Viton valve stem seals, ensuring a leak-free and high-performing engine rebuild. It's the ultimate solution for a full top-end or bottom-end refresh.
Why riders pick this
- Complete engine overhaul gasket kit for Twin Cam
- Includes MLS head gaskets and Viton-coated base gaskets
- Features blue Viton valve stem seals for oil control
- All necessary fasteners and O-rings included
- Engineered for superior sealing and durability
When it's time for a complete engine overhaul on your Harley Twin Cam, you need a gasket kit you can trust. The Cometic Twin Cam EST Gasket Kit provides all the critical sealing components required to bring your motor back to peak condition. Featuring advanced MLS (Multi-Layer Steel) head gaskets for superior sealing under extreme conditions, steel Viton-coated base gaskets for durability, and blue Viton valve stem seals for optimal oil control, this kit is engineered for performance and longevity. All AFM material components are included, ensuring every seal point is covered.
Comprehensive Sealing for Your Twin Cam
- Includes advanced MLS head gaskets for superior sealing
- Features steel Viton-coated base gaskets for durability
- Contains blue Viton valve stem seals for oil control
- Complete overhaul kit with all necessary fasteners and O-rings
- Utilizes high-quality AFM material components throughout
Confidence in Your Engine Rebuild
A full engine rebuild is a significant undertaking, and the quality of your gaskets is paramount to its success. The Cometic Twin Cam EST Gasket Kit eliminates guesswork by providing a complete, high-quality solution that meets or exceeds OEM standards. Whether you're chasing more power or simply restoring reliability, this kit ensures a tight, leak-free seal across your entire Twin Cam engine, allowing you to ride with confidence knowing your motor is properly sealed.
Specifications
- Brand: Cometic
- Manufacturer Part #: C9155
- Length: 8.97 in
- Width: 7.4 in
- Height: 2.04 in
- Weight: 0.05 lbs
Common questions
What specific components are included in this Cometic Twin Cam EST Gasket Kit?
This comprehensive kit includes MLS head gaskets, steel Viton-coated base gaskets, blue Viton valve stem seals, AFM material components, and all necessary fasteners and O-rings for a complete engine overhaul.
Will this gasket kit fit my particular Twin Cam engine?
This kit is specifically designed for Harley-Davidson Twin Cam EST motors. We advise verifying your engine designation to ensure it matches this EST variant before placing your order.
Do I need to purchase any additional gaskets or seals separately after buying this kit?
No, Cometic engineered this kit to be a complete overhaul solution, including every gasket, seal, washer, and O-ring needed for a full Twin Cam EST engine rebuild.
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 | 68-9155 |
| WEIGHT | 0.05 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.36
14 RATINGS
5★
11
4★
0
3★
1
2★
1
1★
1
✓ VERIFIED
Mar 8, 2026
Gasket
Working fine was for my brother's bike
✓ VERIFIED
Oct 25, 2024
Works Fine at a lower cost
I usually have an OEM from Harley Davidson, I have used this twice on my 04 Electraglide, no leaks or issues. At a much lower price.
✓ VERIFIED
Jun 8, 2024
A mediocre gasket
I didn’t use this gasket after removing the derby and seeing the Harley gasket that I removed. No comparison in quality. I ended up going to the local dealer and bought an O.E. gasket.
✓ VERIFIED
Jun 6, 2023
A good buy
The gasket fit nicely and no leaks so far . The fitment was spot on .
✓ VERIFIED
May 4, 2023
There is nothing on them indicating they are actually Cometic gaskets. Are they Substitutes?
