✓ 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: 68-9778
Cometic Twin Cam EST Gasket Kit — Harley-Davidson Road King, Road King Classic, Electra Glide (1999-2006)
$280.86
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Cometic Twin Cam EST gasket kit for V-twin motorcycles, containing all gaskets, seals, washers, and o-rings needed for a complete engine overhaul. Features MLS head gaskets, steel Viton-coated base gaskets, and blue Viton valve stem seals designed for high-performance Twin Cam engines.
Features
- MLS head gaskets
- Steel Viton-coated base gaskets
- Blue Viton valve stem seals
- Complete overhaul kit — all gaskets, seals, washers, and o-rings included
- AFM material components
Specifications
- Brand: Cometic
- Manufacturer Part #: C9778F
- Weight: 1.92 lbs
Fitment
Fits V-twin motorcycles, specifically Harley-Davidson Twin Cam EST engines.
Frequently Asked Questions
What's included in this gasket kit?
Every gasket, seal, washer, and o-ring needed for a complete engine overhaul — no additional sealing components required.
Is this a full engine gasket set?
Yes — this is a complete overhaul kit containing all internal engine seals and gaskets.
Will this fit my Twin Cam Harley?
This part is designed for Twin Cam EST engines. Verify your engine designation before ordering to ensure compatibility.
What makes Cometic gaskets different?
Cometic uses MLS head gaskets and Viton seals engineered for high-performance V-Twin engines with improved durability over OEM designs.
| BRAND | Cometic |
| TYPE | Gaskets/Seals |
| SKU | 68-9778 |
| WEIGHT | 1.92 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?
