✓ VERIFIED
Jan 16, 2020
Almost identical to OEM. Good fit. I did miss that they are sold as each and not as a pair. Small detail and my fault but it did slow my project down a bit.
COMETIC
SKU: 68-10219
Cometic Milwaukee-Eight EST Gasket Kit 4.075" Bore - Harley Milwaukee-Eight
$238.10
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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.
When rebuilding or performing top-end work on your Milwaukee-Eight, a reliable gasket kit is crucial for optimal performance and a leak-free engine. This Cometic EST (Extreme Sealing Technology) kit provides all the essential components for a secure and durable seal. Engineered specifically for M8 engines with a 4.075-inch bore, it ensures precise fitment.
Why riders pick this
- Complete engine overhaul gasket set
- MLS head gaskets for high-compression applications
- Steel Viton-coated base gaskets included
- Blue Viton valve stem seals for valve train
- AFM material for a thorough engine seal
- Designed for Milwaukee-Eight 4.075" bore
This Cometic Milwaukee-Eight EST Gasket Kit is tailored for Harley-Davidson V-twin engines with a 4.075-inch bore. It’s a complete overhaul package, supplying every gasket, seal, washer, and o-ring needed for a full engine rebuild. The kit includes advanced MLS (Multi-Layer Steel) head gaskets and steel Viton-coated base gaskets, designed to withstand the demands of a high-performance M8 powerplant.
Superior Sealing Performance
- MLS head gaskets provide robust sealing under extreme engine conditions
- Steel Viton-coated base gaskets resist oil and fuel degradation
- Blue Viton valve stem seals ensure consistent valve guide lubrication and oil control
- AFM material components for comprehensive sealing throughout the motor
Precision for Your M8 Rebuild
Whether you’re addressing a high-mileage engine or upgrading internal components, this Cometic EST gasket kit offers the quality and precision required for a successful rebuild. It's designed as a direct replacement for Milwaukee-Eight engines, ensuring compatibility and reliable performance. Always verify your engine's bore size before purchasing to guarantee the correct fitment for your specific Harley-Davidson M8 model.
Specifications
- Brand: Cometic
- Manufacturer Part #: C10219
- Engine Displacement: 114 cu
- Bore Size: 4.075"
- Head Gasket Thickness: .040"
- Length: 9 in
- Width: 7 in
- Height: 1.25 in
- Weight: 0.95 lbs
Common questions
Which Milwaukee-Eight engines does this gasket kit fit?
This Cometic EST gasket kit is designed for Milwaukee-Eight (M8) engines with a 4.075-inch bore, commonly found in 114 cubic inch applications. It is not compatible with other bore sizes or non-M8 engines.
What types of gaskets are included in this kit?
The kit is a complete overhaul package, featuring MLS head gaskets, steel Viton-coated base gaskets, blue Viton valve stem seals, and various AFM material components, along with all other necessary seals and o-rings.
Is this a direct replacement for OEM gaskets?
Yes, this Cometic EST gasket kit is engineered as a direct replacement for your Milwaukee-Eight engine, providing enhanced durability and sealing performance over standard OEM components. Always confirm bore size.
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 | 68-10219 |
| WEIGHT | 0.95 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.87
15 RATINGS
5★
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✓ VERIFIED
Oct 18, 2021
Great seals and gaskets do the job once when you use quality gaskets
✓ VERIFIED
Sep 26, 2019
Seal good and I haven't had any issues..
✓ VERIFIED
Jun 27, 2025
It worked like it was suppose to, delivery was quick. <br />Pleased.
✓ VERIFIED
Dec 19, 2023
Just what I needed
Needed these when changing out intake manifold. They worked perfect for my ‘03 sporty.
✓ VERIFIED
Jun 12, 2023
Cometic from here on out
These seals are the only ones I'll use. others came close but, for me, these are best.
