✓ VERIFIED
Sep 28, 2024
Great kit
Works really well. I recommend this for your HD big twin.
COMETIC
SKU: 68-9145F1
Cometic Primary Housing Gasket - Harley Evo Big Twin & Twin Cam
$139.000,00
Free shipping on orders $99+ · Best value guarantee
affirm
From $11.583,33/mo with Affirm.
See if you prequalify
IN STOCK
— Ships within 24 hours
Free Shipping on orders $99+
Best Value Guarantee
30-Day Returns — see policy
Authorized Dealer — sourced direct
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 primary sealed tight with this Cometic primary housing gasket, an OEM-grade replacement designed for Harley Evo Big Twin and Twin Cam engines. This essential seal prevents oil weeping at the engine-to-primary interface, maintaining the integrity of your drivetrain.
Why riders pick this
- OEM-grade replacement for Evo Big Twin and Twin Cam
- Prevents oil weeping at the primary housing
- Ensures a reliable and secure seal
- Engineered for precise fitment
When you're wrenching on your Harley's primary, a fresh gasket is cheap insurance against leaks. This Cometic primary housing gasket is engineered to meet or exceed OEM specifications, providing a reliable barrier to keep your primary oil where it belongs.
Engineered for a Dependable Seal
- OEM-grade replacement for consistent performance
- Designed specifically for Evo Big Twin and Twin Cam V-twin engines
- Helps prevent oil seepage at the primary housing interface
- Ensures a secure and long-lasting seal
Smart Maintenance for Your V-Twin
Whether you're performing routine maintenance or diving into a clutch service, replacing the primary housing gasket is a critical step. This single-pack gasket is ideal for a one-time service, ensuring a clean, leak-free reassembly. Pair it with fresh primary fluid for complete peace of mind.
Specifications
- Brand: Cometic
- Manufacturer Part #: C9145F1
- UPC: 191070001650
- Length: 13.2 in
- Width: 0.05 in
- Height: 0.3 in
- Weight: 0.24 lbs
Common questions
Is this gasket compatible with my Twin Cam engine?
Yes, this Cometic primary housing gasket is specifically designed for both Evo Big Twin and Twin Cam V-twin engines.
Do I need to replace this gasket every time I remove the primary cover?
While not always strictly necessary for a simple oil change if the old gasket is in perfect condition, it is highly recommended to replace it any time the primary cover is removed to ensure a leak-free seal.
Is this an OEM Harley-Davidson part?
No, this is an aftermarket primary housing gasket manufactured by Cometic to meet or exceed OEM specifications for Harley-Davidson Evo Big Twin and Twin Cam 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.
| BRAND | Cometic |
| TYPE | Gaskets/Seals |
| SKU | 68-9145F1 |
| WEIGHT | 0.24 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.75
4 RATINGS
5★
3
4★
1
3★
0
2★
0
1★
0
✓ VERIFIED
Apr 15, 2024
Everything fit the way it should
✓ VERIFIED
Apr 6, 2023
Good deal
high quality gaskets, fixed the leak
✓ VERIFIED
Apr 26, 2021
works
does what it claims. while i had to wait for a factory gasket, this one is working fine and has been for 6 months
