COMETIC SKU: 68-10179-2

Cometic Milwaukee-Eight Rocker Box Gasket .020" Thick 2-Pack - Harley Milwaukee-Eight

$78.000,00
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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.

This Cometic Milwaukee-Eight rocker box assembly gasket is a genuine OEM-replacement seal, precisely engineered for Harley-Davidson and Indian Motorcycle V-twin engines. This 2-pack ensures you have the necessary gaskets to maintain a reliable seal between the rocker box and cylinder head, preventing oil leakage and preserving engine performance.

Why riders pick this

  • Includes two rocker box assembly gaskets
  • Precision .020 inch thickness for optimal fitment
  • Direct OEM replacement for Milwaukee-Eight engines
  • Ensures a reliable seal, preventing oil leaks

When performing maintenance or upgrades on your Milwaukee-Eight, it's critical to use high-quality gaskets that meet or exceed factory specifications. Cometic delivers with these rocker box gaskets, crafted for a precise fit and long-lasting durability. The convenient 2-pack is perfect for servicing both rocker boxes on your M8 engine.

Essential Sealing for M8 Rocker Boxes

  • Includes two rocker box assembly gaskets
  • Features .020 inch thickness for precise fitment
  • Direct OEM replacement specification for Milwaukee-Eight engines
  • Ensures a reliable seal to prevent oil leaks

Maintain Peak Engine Performance

Rocker box gaskets are vital for keeping your Milwaukee-Eight engine sealed and performing as it should. These Cometic gaskets provide the peace of mind that comes with using components designed for the demands of a V-twin. Whether you're doing routine service or a performance build, trust Cometic for a proper seal every time.

Specifications

  • Brand: Cometic
  • Manufacturer Part #: C10179-2
  • Quantity: 2 per pack
  • Length: 8.95 in
  • Width: 10.1 in
  • Height: 0.3 in
  • Weight: 0.05 lbs

Common questions

What's included in this 2-pack?

This 2-pack includes two rocker box assembly gaskets, which is typically enough for servicing both rocker boxes on a complete Milwaukee-Eight engine.

Is this the same as OEM Harley part #25700372?

Yes, Cometic manufactures this gasket to OEM specifications, making it a direct replacement for Harley's factory part #25700372.

Will this fit Indian Motorcycle M8 engines?

Yes, this gasket is designed for Milwaukee-Eight (M8) rocker box assemblies on both Harley-Davidson and Indian Motorcycle V-twin engines.

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
SKU68-10179-2
WEIGHT0.05 lb
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.67
18 RATINGS
5★ 16
4★ 0
3★ 1
2★ 0
1★ 1
✓ VERIFIED
Apr 17, 2025

Gasket quality

Great gasket kit over delivered in the quality of the gasket set great job

— Randy M
✓ VERIFIED
Jun 3, 2023

DONT FOLLOW PRINTED INSTRUCTIONS!

DON’T FOLLOW THE INSTRUCTIONS ON THE BOX!!! It says recommended torque is 42 lb/ft. You know what happened at 32lb/ft? One of bolts broke! And I was lucky there was long enough piece sticking out to remove it without drilling out! Check photos.

— Roman B
✓ VERIFIED
Feb 21, 2022

Fits well!

— Anonymous
✓ VERIFIED
Sep 10, 2021

Quality part great service and got it ahead of time great place

— Anonymous
✓ VERIFIED
Jun 7, 2021

No leaks!!<br />Ordering was a breeze. Shipping was fast and I live way out in the middle of the Pacific Ocean, Hawaii. Price was much better than competition.

— Anonymous
✓ VERIFIED
Nov 1, 2020

Great gaskets. Bike has been running great ever since I installed these last week, about 270 miles on em, no issues

— Anonymous