✓ 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: 68-9780
Cometic Twin Cam EST Gasket Kit — Harley-Davidson Road King, Road King Classic, Electra Glide (1999-2002)
$179.57
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Cometic Twin Cam EST gasket kit provides all seals, gaskets, and o-rings needed for a complete engine overhaul on compatible V-twin motorcycles. Kit includes MLS head gaskets, steel Viton-coated base gaskets, blue Viton valve stem seals, and AFM material components.
Features
- MLS head gaskets
- Steel Viton-coated base gaskets
- Blue Viton valve stem seals
- AFM material components
- Complete overhaul kit — all gaskets and seals included
Specifications
- Brand: Cometic
- Manufacturer Part #: C9780
- Length: 7.7 in
- Width: 9.3 in
- Height: 2.15 in
- Weight: 0.875 lbs
Fitment
Fits V-twin motorcycles with Twin Cam EST engines. Verify compatibility with your specific year and model before ordering.
Frequently Asked Questions
What's included in this gasket kit?
All gaskets, seals, washers, and o-rings needed for a complete engine overhaul — no additional parts required.
Will this fit my Harley with a Twin Cam EST engine?
Yes, if your Harley uses a Twin Cam EST engine. Confirm your model year and engine type before ordering.
What materials are in the head gasket?
MLS (multi-layer steel) head gaskets rated for high-performance V-twin applications.
Are the valve stem seals included?
Yes — blue Viton valve stem seals are included in the kit.
| BRAND | Cometic |
| TYPE | Gaskets/Seals |
| SKU | 68-9780 |
| WEIGHT | 0.88 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?
