✓ 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: 68-9848F
Cometic Evo Big Twin EST Complete Gasket Kit - Harley & Indian 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 delivers all the necessary components. This comprehensive kit ensures every sealing surface is addressed with high-quality gaskets and seals, ready for the road.
Why riders pick this
- Complete engine overhaul kit for Evo Big Twin
- Features MLS head gaskets for superior sealing
- Steel Viton-coated base gaskets for durability
- Blue Viton valve stem seals for oil control
- AFM material components included for reliable seals
This Cometic Evo Big Twin EST gasket kit provides every gasket, seal, washer, and o-ring required for a full engine rebuild. Engineered with advanced materials, this kit is designed to deliver reliable sealing and maintain engine integrity, even in high-performance V-twin applications.
Advanced Sealing for Evolution Engines
- Multi-Layer Steel (MLS) head gaskets provide robust sealing for high-performance applications
- Steel Viton-coated base gaskets offer enhanced durability and resistance to leaks
- Blue Viton valve stem seals ensure consistent oil control and extended life
- AFM material components contribute to precise and long-lasting seals
- Complete overhaul kit includes all essential gaskets and seals for a full rebuild
Restore Your Evo Big Twin's Performance
When rebuilding an Evolution Big Twin, using a complete and high-quality gasket set is crucial for long-term reliability. This Cometic kit ensures that every sealing point, from cylinder heads to crankcase, is properly addressed. Invest in the integrity of your engine with components designed to withstand the demands of your Harley-Davidson or Indian Motorcycle Evo Big Twin.
Specifications
- Brand: Cometic
- Manufacturer Part #: C9848F
- Length: 13.14 in
- Width: 22.67 in
- Height: 1.88 in
- Weight: 0.2 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.
Will this kit fit my Harley-Davidson Evolution Big Twin engine?
Yes, this Cometic Evo Big Twin EST gasket kit is designed for Evolution Big Twin EST engines found in Harley-Davidson and Indian Motorcycle models. We recommend using our Shop by Bike tool to confirm exact fitment for your specific model and year.
Why are MLS head gaskets important for performance engines?
MLS (Multi-Layer Steel) head gaskets are critical for performance engines because they offer superior sealing under high cylinder pressures and temperatures, preventing leaks and maintaining optimal compression.
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 | 68-9848F |
| WEIGHT | 0.2 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?
