✓ 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: 68-9588
Cometic Twin Cam EST Complete Gasket Kit - Harley Twin Cam
$136.000,00
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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.
When it's time for a full engine overhaul on your Twin Cam, the Cometic Twin Cam EST gasket kit delivers every seal, washer, and O-ring you'll need. This comprehensive kit features MLS head gaskets, Viton-coated base gaskets, and blue Viton valve stem seals, all designed for reliable sealing under the rigors of high-performance V-twin operation. Build with confidence, knowing every critical junction is sealed with Cometic quality.
Why riders pick this
- MLS head gaskets for high-performance builds
- Steel Viton-coated base gaskets for durability
- Blue Viton valve stem seals for oil control
- Complete kit for full engine overhaul
- AFM material for robust sealing
A proper engine build relies on superior sealing at every point, and the Cometic Twin Cam EST gasket kit provides exactly that. This complete overhaul kit is meticulously assembled to include all necessary gaskets, seals, washers, and O-rings for your Twin Cam engine. From Multi-Layer Steel (MLS) head gaskets that excel under high cylinder pressures to steel Viton-coated base gaskets and blue Viton valve stem seals, every component is chosen for its ability to maintain a leak-free, high-performance motor. The inclusion of AFM material further ensures robust sealing across various engine interfaces.
Comprehensive Sealing for Peak Performance
- Includes MLS head gaskets for enhanced durability
- Steel Viton-coated base gaskets provide reliable sealing
- Blue Viton valve stem seals ensure oil control
- AFM material gaskets for superior sealing performance
- Complete overhaul kit with all necessary gaskets and seals
The Foundation for a Strong Twin Cam Build
Whether you're rebuilding a tired engine or pushing the limits with a performance build, this Cometic gasket kit is your foundation for success. The quality of your gaskets directly impacts engine reliability and longevity, making this comprehensive kit an intelligent investment. Ensure your Harley-Davidson Twin Cam performs at its peak, free from leaks and sealing issues, by choosing Cometic's proven engineering.
Specifications
- Brand: Cometic
- Manufacturer Part #: C9588
- UPC: 191070018078
- Weight: 0.38 lbs
- Package Dimensions: 9.4 in L × 7.9 in W × 2.6 in H
Common questions
What components are included in this Cometic 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, blue Viton valve stem seals, and AFM material gaskets.
Will this gasket kit fit my specific Twin Cam engine?
Yes, this Cometic EST gasket kit is specifically designed for Harley-Davidson Twin Cam EST engines. We recommend using our Shop by Bike tool to confirm exact fitment for your model year.
What is the benefit of MLS (Multi-Layer Steel) head gaskets?
MLS head gaskets are known for their superior sealing capabilities, especially under higher boost and cylinder pressures, making them a reliable choice for performance-oriented engine builds.
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 | 68-9588 |
| WEIGHT | 0.38 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?
