✓ 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: 68-10205
Cometic Milwaukee 8 Intake/Exhaust Gasket - O-Ring M8 Repl 10pk Oe#91800058-B — Harley-Davidson (2017-2019)
$14.88
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Cometic Milwaukee 8 intake and exhaust manifold gasket with O-ring seal, sold in a 10-pack as a direct replacement for Harley OE# 91800058-B. Purpose-built for M8 engines with modern gasket technology to seal consistently under heat and pressure.
Features
- 10-pack quantity
- O-ring seal design
- Direct OEM replacement (91800058-B)
- Fits Milwaukee-Eight engines
Specifications
- Brand: Cometic
- Manufacturer Part #: C10205
- OE Reference: 91800058-B
- Length: 7 in
- Width: 6 in
- Height: 0.25 in
- Weight: 0.05 lbs
Fitment
Fits Harley-Davidson and Indian Motorcycle V-twin models with Milwaukee-Eight (M8) engines.
Frequently Asked Questions
Will this work on Twin Cam or Twin Cam 103 engines?
No — this gasket is specific to Milwaukee-Eight (M8) engines. Twin Cam models require a different part number.
Why are these sold in 10-packs?
Ten-pack quantity is ideal for shops, multi-bike fleets, and riders maintaining multiple motorcycles or keeping spares.
Is this a direct replacement for the OEM gasket?
Yes — Cometic C10205 is engineered to replace Harley OE# 91800058-B with the same fit and sealing performance.
Do I need new gaskets every time I remove the manifold?
Cometic gaskets are single-use. Replace them whenever the intake or exhaust manifold is removed for service.
| BRAND | Cometic |
| TYPE | Gaskets/Seals |
| SKU | 68-10205 |
| WEIGHT | 0.05 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.87
15 RATINGS
5★
13
4★
2
3★
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2★
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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.
