✓ VERIFIED
Oct 4, 2025
Rocker gaskets
Great qualities to these gaskets. Have used them extensively!
COMETIC
SKU: 68-9150
Cometic Evo Big Twin/Twin Cam Primary Housing Gasket - & Seal BIG Twin KIT — Harley-Davidson (2006-2017)
$120.35
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Cometic primary housing gasket and seal kit for Evo Big Twin and Twin Cam V-twin engines. Engineered to seal the primary cover with precision tolerances and modern gasket materials designed for high-performance applications.
Features
- Primary housing gasket and seal kit
- For Evo Big Twin and Twin Cam engines
- Precision gasket design for primary cover sealing
Specifications
- Brand: Cometic
- Manufacturer Part #: C9150
- UPC: 191070019334
- Length: 22.7 in
- Width: 13.2 in
- Height: 1.9 in
- Weight: 1.05 lbs
Fitment
Fits Evo Big Twin and Twin Cam V-twin engines used in Harley-Davidson and Indian Motorcycle models.
Frequently Asked Questions
Will this fit my Evo Big Twin engine?
Yes — this gasket kit is specifically designed for Evo Big Twin primary housings.
Does this work on Twin Cam engines?
Yes — this kit covers both Evo Big Twin and Twin Cam engine platforms.
What's included in the kit?
The primary housing gasket and seals needed to reseal the primary cover assembly.
Is this an OEM gasket or aftermarket?
Cometic is an aftermarket manufacturer of precision gaskets engineered to OEM standards for V-twin engines.
| BRAND | Cometic |
| TYPE | Gaskets/Seals |
| SKU | 68-9150 |
| WEIGHT | 1.05 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.73
11 RATINGS
5★
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✓ VERIFIED
Sep 29, 2025
Cometic gaskets
I used james gaskets before i got cometic and they didn’t last long and had to pay someone to replace them again so I went with cometic and so far so good im going to stick with this brand from now on
✓ VERIFIED
Mar 18, 2024
Magical
This gasket worked perfectly! ALTHOUGH, it would not have been needed had the James Engine gasket set had the correct gasket. The bolt holes were large on the set(I suppose fore different engine applications) which introduced an oil leak issue after I rebuilt my engine. <br />The COMETIC GASKET fit my 103 perfectly and ...tada!..magically...no leaks!
✓ VERIFIED
Jul 7, 2019
Fits, works, looks like good material. Would use again if needed.
✓ VERIFIED
Apr 18, 2016
Great product. No extra material necessary and no leaks after using.
✓ VERIFIED
Oct 31, 2015
Great gaskets worked perfect. Prefer James gaskets but they were not available. Theses got the job done.
