✓ VERIFIED
Apr 17, 2025
Gasket quality
Great gasket kit over delivered in the quality of the gasket set great job
COMETIC
SKU: 68-9174
Cometic Twin Cam Transmission Gasket Kit - Harley Softail Twin Cam
$99.53
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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.
Keep your Twin Cam transmission sealed tight with this Cometic Gasket Kit. Engineered for the demands of modern high-performance engines, it ensures a leak-free seal between the transmission cover and case. This kit provides the reliability serious riders expect from their V-twin.
Why riders pick this
- Complete kit for Twin Cam transmission cover and case
- Engineered to seal against leaks in high-performance engines
- Direct replacement for hassle-free installation
- Critical for reliable transmission operation
When you're pushing your Twin Cam, the last thing you need is a transmission leak. This Cometic gasket kit is purpose-built to handle the heat and vibration of performance V-twin engines, providing a robust seal where it matters most. It's an essential component for any transmission service or rebuild on your Harley Softail.
Engineered for Performance and Durability
- Complete gasket set for Twin Cam transmission cover and case
- Designed to prevent leaks under high-performance conditions
- Constructed from durable, high-quality sealing materials
Installation and Maintenance Notes
Replacing transmission gaskets is a critical step in preventing fluid loss and maintaining component integrity. This kit is designed as a direct replacement, fitting precisely as the factory intended. Always refer to your service manual for proper installation procedures and torque specifications to ensure optimal sealing and longevity.
Specifications
- Brand: Cometic
- Manufacturer Part #: C9174
- Weight: 0.25 lbs
Common questions
What parts are included in this gasket kit?
This kit includes all the necessary gaskets and seals for the Twin Cam transmission cover and case. It's a comprehensive set for this specific area.
Is this gasket kit a direct replacement for OEM gaskets?
Yes, Cometic designs these gaskets to meet or exceed OEM specifications, ensuring a direct and reliable fit for your Twin Cam transmission.
Do I need to use additional sealant with these gaskets?
While Cometic gaskets are designed for excellent sealing, it's always best to consult your specific model's service manual for recommended installation practices. Some riders opt for a light anaerobic sealant on the case gasket.
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 | 68-9174 |
| WEIGHT | 0.25 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
