✓ 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: 68-995151
Cometic Twin Cam EST Complete Gasket Kit - Harley Twin Cam
$147.43
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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.
This Cometic Twin Cam EST gasket kit is the ultimate solution for a complete engine overhaul, supplying every gasket, seal, washer, and O-ring needed. Featuring advanced materials like MLS head gaskets and Viton-coated base gaskets, it ensures reliable, leak-free performance for your Harley-Davidson Twin Cam.
Why riders pick this
- Complete overhaul kit for Twin Cam engines
- MLS head gaskets for robust sealing
- Viton-coated base gaskets for durability
- Blue Viton valve stem seals for oil control
- All necessary gaskets, seals, and o-rings included
When performing a complete engine overhaul on your Twin Cam, a comprehensive and high-quality gasket set is crucial for the success and longevity of your build. The Cometic Twin Cam EST gasket kit provides every single component required for a full rebuild, from head gaskets to O-rings. This eliminates the hassle of sourcing individual parts and ensures you have all the right pieces for a professional-grade job.
Extreme Sealing Technology for Peak Performance
- Multi-Layer Steel (MLS) head gaskets for robust sealing under high demands
- Steel Viton-coated base gaskets resist heat and chemical degradation
- Blue Viton valve stem seals ensure superior oil control and longevity
- Utilizes advanced AFM material components throughout the kit
- A complete overhaul kit, including all gaskets, seals, washers, and O-rings
Confidence for Your Twin Cam Rebuild
Whether you're refreshing a high-mileage Twin Cam or building a performance engine, the integrity of your engine's seals is paramount. Cometic's EST technology, featuring premium materials, is designed to meet the rigorous demands of high-performance V-twin engines. This kit ensures that your engine rebuild is sealed properly, providing peace of mind and long-lasting reliability on the road.
Specifications
- Brand: Cometic
- Manufacturer Part #: C9951-051
- Weight: 1.3888 lbs
Common questions
What components are included in this Cometic Twin Cam EST gasket kit?
This kit is a complete engine overhaul set, including MLS head gaskets, steel Viton-coated base gaskets, blue Viton valve stem seals, washers, O-rings, and other AFM material components needed for a full Twin Cam rebuild.
Will this gasket kit fit my specific Twin Cam engine?
This kit is designed for Twin Cam EST models. Given the variations across Twin Cam generations, it's crucial to confirm your engine code and specific model using our Shop by Bike tool for precise compatibility.
Do I need to purchase any additional gaskets or seals separately with this kit?
No, this is a complete overhaul kit. It contains every gasket, seal, washer, and O-ring required for a full engine rebuild, so no additional purchases should be necessary.
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 | 68-995151 |
| WEIGHT | 1.39 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?
