✓ 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: 68-10217
Cometic Milwaukee 8 EST Gasket Kit - M8 3.937" 107cu .040"h/G Oe#25700729 — Harley-Davidson (2017-2019)
$238.10
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Cometic Milwaukee 8 EST gasket kit for Harley-Davidson M8 engines, featuring MLS head gaskets, steel Viton-coated base gaskets, blue Viton valve stem seals, and AFM material. Complete overhaul package includes every gasket, seal, washer, and o-ring needed for a full engine rebuild.
Features
- MLS head gaskets
- Steel Viton-coated base gaskets
- Blue Viton valve stem seals
- AFM material components
- Complete overhaul kit — all gaskets, seals, washers, and o-rings included
Specifications
- Brand: Cometic
- Manufacturer Part #: C10217
- Engine: Milwaukee 8 (M8) 107cu
- Bore Size: 3.937 inch
- Head Gasket Height: 0.040 inch
- Kit Dimensions: 9 in L x 7 in W x 1.25 in H
- Weight: 0.95 lbs
Fitment
Fits Harley-Davidson motorcycles equipped with the Milwaukee 8 (M8) engine.
Frequently Asked Questions
What's included in this kit?
Every gasket, seal, washer, and o-ring needed for a complete Milwaukee 8 engine overhaul — head gaskets, base gaskets, valve stem seals, and more.
Will this fit my Twin Cam or older Harley engine?
No — this kit is specific to Milwaukee 8 (M8) engines. Twin Cam and earlier models require different gasket kits.
Is professional installation required?
Engine gasket kits are typically installed by experienced technicians or builders. If you're new to engine work, have a shop handle the installation.
What materials are used in these gaskets?
The kit features MLS head gaskets, steel Viton-coated base gaskets, blue Viton valve stem seals, and AFM material for durability and sealing performance.
| BRAND | Cometic |
| TYPE | Gaskets/Seals |
| SKU | 68-10217 |
| 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★
13
4★
2
3★
0
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1★
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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.
