✓ 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: 68-9146
Cometic Complete Engine Gasket Kit - Twin Cam EST Harley-Davidson
$457.000,00
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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.
Tackle a full engine overhaul with confidence using the Cometic Twin Cam EST gasket kit. This comprehensive kit provides all the necessary seals, gaskets, and o-rings for a complete rebuild of your Twin Cam-equipped V-twin motorcycle.
Why riders pick this
- Complete kit for Twin Cam EST engine overhaul
- Includes MLS head gaskets for reliable sealing
- Steel Viton-coated base gaskets for durability
- Blue Viton valve stem seals for optimal performance
- All gaskets, seals, and o-rings included
When it's time for a top-to-bottom refresh on your Twin Cam, you need a gasket kit that covers every seal. This Cometic EST gasket kit is assembled with high-quality materials to ensure a leak-free and durable engine rebuild, bringing new life to your V-twin.
Premium Materials for Peak Performance
- Multi-Layer Steel (MLS) head gaskets for superior sealing
- Steel Viton-coated base gaskets resist heat and chemicals
- Blue Viton valve stem seals ensure optimal valve guide sealing
- AFM material components provide robust sealing for various applications
- Complete kit includes all gaskets, seals, and o-rings for an overhaul
The Foundation of a Solid Rebuild
An engine overhaul is a significant undertaking, and the quality of your gaskets is paramount to its success. This Cometic kit provides the peace of mind that comes with using components engineered for performance and longevity. From the cylinders to the rocker boxes, every critical sealing surface is covered, making it an ideal choice for riders and shops performing comprehensive Twin Cam engine work.
Specifications
- Brand: Cometic
- Manufacturer Part #: C9146
- UPC: 191070012977
- Length: 9.3 in
- Width: 8 in
- Height: 2.6 in
- Weight: 0.84 lbs
Common questions
What specific components are included in this gasket kit?
This complete kit includes all gaskets, seals, washers, and o-rings needed for a full engine overhaul, such as MLS head gaskets, steel Viton-coated base gaskets, and blue Viton valve stem seals.
Will this gasket kit fit all Harley-Davidson Twin Cam engines?
This kit is specifically designed for Twin Cam EST engines. It's essential to verify your engine's exact designation to ensure compatibility before ordering.
Do I need to purchase any additional gaskets or seals separately for an overhaul?
No, this is a complete engine overhaul kit intended to provide every gasket, seal, and o-ring required for a comprehensive 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 | 68-9146 |
| WEIGHT | 0.84 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?
