COMETIC SKU: 68-10205

Cometic Milwaukee-Eight Intake/Exhaust Gasket O-Ring 10-Pack - Harley M8

$47.000,00
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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.

Ensure a superior seal for your Milwaukee-Eight's intake and exhaust manifolds with this Cometic O-ring gasket 10-pack. These gaskets are engineered with an O-ring seal design and built to OEM specifications, providing a reliable and leak-free connection for your Harley-Davidson M8 engine.

Why riders pick this

  • O-ring seal design for superior sealing
  • Direct OEM replacement for Milwaukee-Eight engines
  • Withstands high temperatures and pressures
  • 10-pack ideal for shops or stocking spares

When it comes to sealing your M8's intake and exhaust, a robust gasket is paramount for optimal performance and preventing leaks. These Cometic gaskets feature an O-ring seal design, purpose-built to handle the heat and pressure of a V-twin engine. As a direct replacement for the factory part, you can trust them to maintain a consistent seal, whether you're performing routine maintenance or installing new performance components.

Advanced Sealing for M8 Performance

  • Features an O-ring seal design for enhanced sealing performance
  • Direct OEM replacement, engineered to match factory specifications
  • Designed to withstand high temperatures and pressures of M8 engines
  • Convenient 10-pack for shops, multiple bikes, or keeping spares

Critical for Engine Health and Power

An airtight intake and exhaust system is fundamental to your Milwaukee-Eight's power and efficiency. These Cometic O-ring gaskets are an essential upgrade or replacement for any M8 owner. They ensure that all your engine's gases are directed exactly where they should be, supporting consistent performance and preventing costly issues down the road. Perfect for any M8 build or service.

Specifications

  • Brand: Cometic
  • Manufacturer Part #: C10205
  • OE Reference: 91800058-B
  • Length: 7 in
  • Width: 6 in
  • Height: 0.25 in
  • Weight: 0.05 lbs

Common questions

Are these O-ring gaskets compatible with Twin Cam engines?

No, these Cometic intake and exhaust O-ring gaskets are specifically designed for Milwaukee-Eight (M8) engines. Twin Cam models require a different part number.

Why are these gaskets sold in a 10-pack?

The 10-pack quantity is ideal for professional shops, riders with multiple bikes, or those who prefer to keep spares on hand for future maintenance.

Are these a direct replacement for the OEM Harley gasket?

Yes, Cometic C10205 gaskets are engineered to directly replace Harley OE# 91800058-B, offering the same fit and sealing performance for your M8.

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.
BRANDCometic
TYPEGaskets/Seals
SKU68-10205
WEIGHT0.05 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★ 0
2★ 0
1★ 0
✓ 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.

— Anonymous
✓ VERIFIED
Oct 18, 2021

Great seals and gaskets do the job once when you use quality gaskets

— Anonymous
✓ VERIFIED
Sep 26, 2019

Seal good and I haven't had any issues..

— Anonymous
✓ VERIFIED
Jun 27, 2025

It worked like it was suppose to, delivery was quick. <br />Pleased.

— Lloyd S
✓ VERIFIED
Dec 19, 2023

Just what I needed

Needed these when changing out intake manifold. They worked perfect for my ‘03 sporty.

— Carlos L
✓ 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.

— Vincent S