COMETIC SKU: 68-10242-030

Cometic Milwaukee-Eight 0.030" RC Gen2 Embossing Base Gasket - Harley & Indian V-Twin

$98.000,00
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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.

Achieve a robust and reliable seal for your Milwaukee-Eight engine with the Cometic .030" RC Gen2 Embossing base gasket. This gasket is engineered to provide superior sealing at the cylinder base, critical for maintaining engine integrity.

Why riders pick this

  • Gen2 Embossing PR construction for superior seal
  • Durable 0.030" thickness
  • Steel with Viton coating for longevity
  • Resists oil degradation and maintains compression
  • Direct replacement for Milwaukee-Eight engines

This Cometic Milwaukee-Eight base gasket features a .030" thickness and Gen2 Embossing PR construction, specifically designed for V-twin motorcycle engines. Its steel construction with a Viton coating ensures exceptional durability and resistance to oil degradation, maintaining a reliable compression seal across various operating conditions. This gasket is a direct replacement for Milwaukee-Eight applications, providing a precise fit for your Harley-Davidson or Indian Motorcycle.

Advanced Sealing for M8 Engines

  • Gen2 Embossing PR construction for enhanced sealing
  • Durable 0.030" thickness
  • Steel Viton coated for superior durability and oil resistance
  • Direct replacement for Milwaukee-Eight base applications

Critical for Engine Health

A high-quality base gasket is fundamental to the long-term health and performance of your Milwaukee-Eight engine. This Cometic gasket ensures a tight seal between the cylinder and crankcase, preventing leaks and maintaining consistent compression. Whether you're performing routine maintenance or a performance build, trust Cometic to provide the reliability your V-twin demands.

Specifications

  • Brand: Cometic
  • Manufacturer Part #: C10242-030
  • Thickness: 0.030 in
  • Length: 8 in
  • Width: 8.5 in
  • Weight: 0.5 lbs

Common questions

What is the thickness of this base gasket?

This Cometic base gasket has a thickness of 0.030 inches with Gen2 Embossing PR construction, engineered for reliable sealing on Milwaukee-Eight engines.

Will this gasket fit Twin Cam or older Harley engines?

No, this gasket is specific to Milwaukee-Eight (M8) engines. Twin Cam and older V-twin platforms require different base gaskets due to design variations.

Is this a complete gasket set or just the base gasket?

This product is a single base gasket only. Cometic offers complete engine gasket kits that include all seals and o-rings for a full motor overhaul.

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
SKU68-10242-030
WEIGHT0.5 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