Your cart is empty
Start ShoppingCometic C9199F1 AFM Primary Housing Gasket - Durable Replacement for Harley-Davidson Big Twin
Fits your
May not fit your
Description
Upgrade your Harley-Davidson Big Twin's sealing performance with Cometic's advanced AFM Primary Housing Gasket. Engineered to outperform traditional paper gaskets, this durable solution ensures reliable compression and leak-free operation for power sports enthusiasts.
Key Features
- AFM Aluminum Foam Core: Provides exceptional heat resistance and structural integrity for long-lasting performance
- Chemically Blown Nitrile Coating: Creates a flexible, impermeable seal that adapts to irregular housing surfaces
- Reusable Design: Eliminates the need for re-torquing after installation for hassle-free maintenance
- Warped Housing Compatibility: Specialized formulation seals imperfect surfaces without requiring sealant or excessive pressure
- USA-Made Precision: Manufactured in the United States for quality control and performance reliability
Why Choose This Product
Cometic's C9199F1 gasket is the preferred choice for riders demanding maximum durability and leak prevention. Its unique AFM technology combines the strength of aluminum foam with the flexibility of nitrile rubber, creating a seal that withstands extreme engine temperatures and vibrations. Unlike paper gaskets, this reusable solution maintains its integrity over time, reducing maintenance costs and downtime. Perfect for Harley-Davidson Big Twin owners seeking a premium replacement that delivers consistent performance without compromising on quality.
Delivery
Checking availability...
Estimated arrival
Order within to ship today
Orders ship
Shipping to
Enter your ZIP code for delivery estimate
Price Match Guarantee
Found it cheaper?
Log in to submit a price match request.
Price
Quantity
Free Shipping $100+
14-Day Returns
Secure Checkout
Price Match
Complete the Build
This item
$29.99
In Cart
Upgrade your Harley-Davidson Big Twin's sealing performance with Cometic's advanced AFM Primary Housing Gasket. Engineered to outperform traditional paper gaskets, this durable solution ensures reliable compression and leak-free operation for power sports enthusiasts.
Key Features
- AFM Aluminum Foam Core: Provides exceptional heat resistance and structural integrity for long-lasting performance
- Chemically Blown Nitrile Coating: Creates a flexible, impermeable seal that adapts to irregular housing surfaces
- Reusable Design: Eliminates the need for re-torquing after installation for hassle-free maintenance
- Warped Housing Compatibility: Specialized formulation seals imperfect surfaces without requiring sealant or excessive pressure
- USA-Made Precision: Manufactured in the United States for quality control and performance reliability
Why Choose This Product
Cometic's C9199F1 gasket is the preferred choice for riders demanding maximum durability and leak prevention. Its unique AFM technology combines the strength of aluminum foam with the flexibility of nitrile rubber, creating a seal that withstands extreme engine temperatures and vibrations. Unlike paper gaskets, this reusable solution maintains its integrity over time, reducing maintenance costs and downtime. Perfect for Harley-Davidson Big Twin owners seeking a premium replacement that delivers consistent performance without compromising on quality.| SKU | GMFF67793B |
|---|---|
| MPN | C9199F1 |
| Brand | Cometic |
| Category | Gaskets/Seals |
0.0
0 reviews
0
Log in to write a review.
Reviews
No reviews yet. Be the first to review this product!
Featured Review
| Make | Model | Years |
|---|---|---|
| Harley-Davidson | Big Twin models (Evo and Shovelhead with 3- and 5-speed) | 1970-1998 |
| Harley-Davidson | Twin Cam (except 2006 Dyna) | 1999-2006 |
Frequently Asked Questions
It is designed for Evo Big Twin and many Twin Cam 5‑speed primary housings. Verify by checking that your bike uses the 1970‑1998 style Big Twin / 1999‑2006 5‑speed primary cover and by comparing to the outline of your OEM gasket or your dealer’s microfiche.
Yes. Cometic’s AFM primary gaskets are designed to be reusable if removed carefully and not damaged during disassembly.
In most applications, no sealant is required. Install it clean and dry on oil‑free surfaces. If the factory manual calls for a dab of sealant at specific joints (case halves, etc.), follow the OEM instructions.
The AFM construction is more conformable than paper and often seals minor imperfections better, but it cannot compensate for severely warped or damaged covers or housings.
Use the primary chaincase lubricant or transmission/primary fluid specified in your Harley-Davidson service manual for your exact year and model.
Installation Guide
Difficulty
Medium
Est. Time
1 hr 0 min
Tools Required
- Harley-Davidson service manual for your model
- Socket set (SAE)
- Allen/hex key set (SAE)
- Torque wrench (inch‑lb and ft‑lb, depending on model)
- Primary drain pan
- Scraper or plastic razor blade for old gasket removal
- Brake cleaner or similar solvent for cleaning surfaces
- Shop rags
Pro Tips
- Clean both mating surfaces until they are bare metal and oil‑free before installing the Cometic gasket.
- Loosely install all primary cover bolts, then torque in a crisscross pattern to factory spec.
- Do a visual check around the entire perimeter to confirm the gasket has not shifted or pinched.
- Refill primary with the correct type and quantity of primary fluid and check for leaks after the first ride.
- Because Cometic AFM gaskets are reusable, carefully remove and store if you must pull the primary again soon.
Common Mistakes to Avoid
- Not fully draining primary fluid before cover removal
- Reusing damaged or crushed primary cover screws and sealing washers
- Leaving old gasket material stuck to the primary or cover, causing leaks
- Over‑torquing primary cover bolts and warping the cover
- Using excessive RTV or silicone which can squeeze into the primary
Comparison vs Stock/OEM
Compared to OEM paper or fiber primary gaskets, the Cometic AFM gasket offers better conformability, improved sealing on minor surface imperfections, and is typically reusable.
Improvements
- No re‑torque required due to AFM material’s ability to maintain clamp load
- More resistant to seepage and weeping around fastener holes
- Reusable if removed carefully, reducing long‑term maintenance cost
Considerations
- More expensive than a basic paper gasket
- Severely warped or damaged housings still require repair or replacement for proper sealing
Durability & Warranty
Expected Lifespan
Intended to last the full service life of the primary service interval and often through multiple removals if undamaged.
Warranty
Backed by Cometic’s standard gasket manufacturing warranty against defects in materials and workmanship (details vary by seller).
Maintenance
Inspect for cuts, deformation, or permanent compression set whenever the primary cover is removed; replace if damaged or if persistent leaks occur.
What Others Are Saying
Reviews from across the web
