✓ VERIFIED
Apr 17, 2025
Gasket quality
Great gasket kit over delivered in the quality of the gasket set great job
COMETIC
SKU: 68-10189
Cometic Milwaukee 8 Rocker Box Assembly Gasket - O-Ring M8 Viton 10pk Oe#119001… — Harley-Davidson (2017-2019)
$12.57
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Cometic rocker box assembly gasket for Harley Milwaukee-Eight engines, featuring Viton O-ring construction in a 10-pack. Direct OEM replacement designed for V-Twin applications requiring reliable sealing at elevated temperatures.
Features
- Viton O-ring construction
- 10-pack quantity
- Milwaukee-Eight (M8) rocker box assembly gasket
- OEM replacement specification
Specifications
- Brand: Cometic
- Manufacturer Part #: C10189
- Quantity: 10 per pack
- Material: Viton O-ring
- Length: 7 in
- Width: 6 in
- Height: 0.25 in
- Weight: 0.05 lbs
Fitment
Fits V-Twin motorcycles with Milwaukee-Eight (M8) rocker box assemblies, including Harley-Davidson and Indian Motorcycle models.
Frequently Asked Questions
Will this work on Twin Cam engines?
No — this gasket is specific to Milwaukee-Eight (M8) engines. Twin Cam rocker boxes require different part numbers.
Why is it sold in a 10-pack?
Pack quantity is ideal for shops, fleet maintenance, and riders stocking spares for multiple bikes or future service intervals.
What material is the O-ring?
Viton construction provides superior heat resistance and durability compared to rubber compounds in high-temperature rocker box applications.
Is this an OEM-equivalent part?
Yes — Cometic manufactures this gasket to OEM specifications as a direct replacement for Harley and Indian rocker box assemblies.
| BRAND | Cometic |
| TYPE | Gaskets/Seals |
| SKU | 68-10189 |
| WEIGHT | 0.05 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.67
18 RATINGS
5★
16
4★
0
3★
1
2★
0
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
