✓ 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: 68-9849F
Cometic Evo Big Twin EST Complete Gasket Kit - Harley Evolution Big Twin
$353.56
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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.
For a complete engine overhaul on your Evolution Big Twin, the Cometic Evo Big Twin EST Gasket Kit is the ideal solution. This comprehensive kit includes every gasket, seal, washer, and o-ring required to fully reseal your V-twin with confidence.
Why riders pick this
- Complete engine overhaul kit for Evo Big Twin
- MLS head gaskets for robust, leak-free sealing
- Steel Viton-coated base gaskets resist heat and wear
- Blue Viton valve stem seals for optimal oil control
- AFM material construction for lasting reliability
This Cometic Evo Big Twin EST gasket kit is engineered for modern V-twin performance, featuring Multi-Layer Steel (MLS) head gaskets and steel Viton-coated base gaskets. These advanced materials ensure reliable sealing and durability, crucial for maintaining your engine's integrity and power output.
Premium Sealing for Your Evolution Engine
- MLS head gaskets provide exceptional sealing for high-performance applications
- Steel Viton-coated base gaskets offer robust resistance to heat and chemicals
- Blue Viton valve stem seals ensure consistent oil control and prevent leakage
- AFM material construction for precise fitment and lasting reliability
- Complete overhaul kit includes all gaskets and seals for a full engine rebuild
Invest in Your Evo Big Twin's Longevity
When you're tearing down your Evolution Big Twin, don't compromise on the quality of your replacement gaskets. This Cometic kit offers a complete, high-performance solution to ensure every critical sealing point is addressed. Rebuild your Harley-Davidson Evo Big Twin with the peace of mind that comes from using top-tier Cometic components.
Specifications
- Brand: Cometic
- Manufacturer Part #: C9849F
- Weight: 1.82 lbs
Common questions
What is included in this Evo Big Twin gasket kit?
This complete kit provides every gasket, seal, washer, and o-ring needed for a full engine overhaul on Evo Big Twin EST engines, including MLS head gaskets, Viton-coated base gaskets, and AFM material components.
Is this gasket kit compatible with Twin Cam or Milwaukee-Eight engines?
No, this kit is specifically designed for Evo Big Twin EST engines. Twin Cam and Milwaukee-Eight owners will need different part numbers. Please verify your engine type before ordering using our Shop by Bike tool.
Do I need to purchase additional seals or gaskets separately?
No, this is a complete overhaul kit, meaning all engine gaskets and seals required for a full rebuild are included. No additional purchases are necessary for the primary engine sealing components.
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 | 68-9849F |
| WEIGHT | 1.82 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
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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?
