✓ VERIFIED
Apr 17, 2025
Gasket quality
Great gasket kit over delivered in the quality of the gasket set great job
COMETIC
SKU: 68-10179
Cometic Milwaukee-Eight Rocker Box Gasket .020" Thick 10-Pack - Harley Milwaukee-Eight
$113.10
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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 engineered as an OEM-replacement seal, designed specifically for Harley-Davidson M8 engines. Provided in a convenient 10-pack, these gaskets ensure a reliable seal for your rocker boxes, crucial for preventing oil leaks and maintaining engine integrity.
Why riders pick this
- 10-pack for shops and multi-bike owners
- Precision .020 inch thickness matches OEM spec
- Direct replacement for Milwaukee-Eight rocker boxes
- Engineered for a secure, leak-free seal
When servicing or rebuilding your Milwaukee-Eight engine, proper sealing of the rocker box is paramount. Cometic gaskets are known for their quality and precision, offering a direct fit that matches factory specifications. This 10-pack is ideal for shops, frequent builders, or riders who like to keep spares on hand for multiple bikes or future maintenance.
Reliable Sealing for M8 Rocker Boxes
- Contains 10 individual rocker box assembly gaskets
- Precision .020 inch thickness matches OEM specifications
- Direct replacement for Harley-Davidson M8 engines
- Engineered for a secure, leak-free seal
Built for Durability and Convenience
Cometic manufactures these rocker box gaskets to high standards, ensuring they can withstand the heat and pressure of a performance V-twin. The multi-pack quantity provides excellent value and convenience, ensuring you always have a fresh gasket available when performing top-end work. Trust Cometic to keep your Milwaukee-Eight running clean and strong.
Specifications
- Brand: Cometic
- Manufacturer Part #: C10179
- OEM Part #: 25700372
- Thickness: 0.020"
- Quantity: 10 per pack
- Length: 8 in
- Width: 8.5 in
- Weight: 0.5 lbs
Common questions
Is this the correct gasket for my M8 Harley?
Yes, this Cometic gasket is specifically designed for Milwaukee-Eight (M8) engines, matching OEM specifications for rocker box assembly gaskets.
Why is this gasket sold in a 10-pack?
The 10-pack quantity is ideal for professional shops, individuals working on multiple bikes, or riders who prefer to stock spare parts for future maintenance needs.
Will this gasket fit Twin Cam engines?
No, this gasket is specific to Milwaukee-Eight (M8) engines. Twin Cam rocker boxes require a different gasket part number.
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.
| BRAND | Cometic |
| TYPE | Gaskets/Seals |
| SKU | 68-10179 |
| WEIGHT | 0.5 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
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1★
1
✓ 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.
✓ VERIFIED
Feb 21, 2022
Fits well!
✓ VERIFIED
Sep 10, 2021
Quality part great service and got it ahead of time great place
✓ 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.
✓ 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
