✓ 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: 68-9889
Cometic Evo Big Twin EST Gasket Kit - & Seal BIG Twin KIT — Harley-Davidson Electra Glide Classic, Tour Glide Classic, Super Glide (1980-1993)
$98.26
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Cometic Evo Big Twin EST gasket kit supplies every gasket, seal, washer, and o-ring needed for a complete engine overhaul on Harley-Davidson Evo Big Twin models. Features MLS head gaskets, steel Viton-coated base gaskets, blue Viton valve stem seals, and AFM material for reliable sealing under high performance.
Features
- MLS head gaskets
- Steel Viton-coated base gaskets
- Blue Viton valve stem seals
- AFM material components
- Complete gasket kit — all seals included
Specifications
- Brand: Cometic
- Manufacturer Part #: C9889
- Length: 22.9 in
- Width: 13.1 in
- Height: 1.8 in
- Weight: 0.05 lbs
Fitment
Fits Harley-Davidson Evo Big Twin models.
Frequently Asked Questions
What's included in this gasket kit?
Every gasket, seal, washer, and o-ring required for a complete engine overhaul — head gaskets, base gaskets, valve stem seals, and more.
Will this fit my Twin Cam or Milwaukee-Eight engine?
No — this kit is specific to Evo Big Twin engines. Twin Cam and M8 engines require different gasket kits.
Do I need any additional seals or gaskets beyond this kit?
No. The Cometic EST kit is designed as a complete solution with every component needed for an overhaul.
What are MLS head gaskets?
Multi-layer steel gaskets that provide superior sealing and durability compared to single-layer gaskets, especially under high boost or performance engines.
| BRAND | Cometic |
| TYPE | Gaskets/Seals |
| SKU | 68-9889 |
| WEIGHT | 0.05 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?
