✓ VERIFIED
Apr 1, 2024
keeps them lookin shiny
keeps the oil on the right side
COMETIC
SKU: 68-9179F1
Cometic Evo Big Twin/Twin Cam Primary Housing Gasket - Harley Big Twin
$139.000,00
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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.
Ensure a leak-free primary housing on your Harley Big Twin with this Cometic Gasket. Designed for both Evo and Twin Cam engines, this OEM-quality replacement gasket is engineered to withstand engine vibration and heat cycles. It provides a reliable seal to keep your primary fluids contained.
Why riders pick this
- OEM-quality primary housing gasket
- Fits Evo Big Twin and Twin Cam engines
- Designed to seal against vibration and heat
- Prevents primary fluid leaks
A leaking primary can be a messy and frustrating issue for any Harley rider. This Cometic primary housing gasket is specifically designed to provide a tight, dependable seal between your primary cover and engine case. Its robust construction ensures it can handle the unique demands of Evo Big Twin and Twin Cam powerplants, preventing fluid loss and keeping your drivetrain components protected.
Reliable Primary Sealing for Your Harley
- OEM-specification gasket material for a precise fit
- Designed for Evo Big Twin and Twin Cam engines
- Resists engine vibration and temperature fluctuations
- Helps prevent oil leakage from the primary housing
Essential for Maintenance and Rebuilds
Whether you're performing routine maintenance, upgrading your clutch, or rebuilding your engine, replacing the primary housing gasket is a critical step. This Cometic gasket is a direct replacement, simplifying installation and ensuring proper sealing. Always consult your service manual for torque specifications and any recommended sealants for your specific Harley-Davidson model.
Specifications
- Brand: Cometic
- Manufacturer Part #: C9179F1
- Length: 23 in
- Width: 13.5 in
- Height: 0.4 in
- Weight: 0.05 lbs
Common questions
Will this gasket fit my Evo Big Twin engine?
Yes, this Cometic gasket is specifically designed for Evo Big Twin and Twin Cam primary housings on Harley-Davidson models.
Is this a direct replacement for the original equipment gasket?
Yes, Cometic manufactures this gasket to OEM specifications, ensuring it is a direct-fit replacement for your primary housing seal.
Do I need to use sealant with this gasket?
Always consult the primary cover service manual for your specific engine and model year. Some applications may benefit from a light bead of gasket sealant during assembly to ensure optimal sealing.
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 | 68-9179F1 |
| WEIGHT | 0.05 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.71
14 RATINGS
5★
11
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✓ VERIFIED
Dec 4, 2023
Easy to install. Good quality and price. Does what it is supposed to do
✓ VERIFIED
Apr 9, 2019
Very good quality/value for the price, I would buy them again.
✓ VERIFIED
May 1, 2016
Good gasket, I like these because they are the same thickness as factory, and do not change the end play on the cam and breather
✓ VERIFIED
Apr 29, 2015
Decent gasket. Sticks out of the nosecone cover a bit at the top as it doesn't follow the nose cone shape precisely. Seals well.
✓ VERIFIED
Jun 22, 2014
easy to replace just like oem
