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Start ShoppingCometic C9448 O-Ring - High-Quality Sealing Solution for Harley-Davidson V-Twin Engines
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Description
Ensure optimal engine performance and longevity with Cometic's C9448 O-Ring, designed specifically for Harley-Davidson V-twin engines. This high-quality sealing solution provides durable protection against oil, fuel, and heat exposure, keeping your classic bike running smoothly.
Key Features
- High-Quality Elastomer Material: Engineered to withstand extreme temperatures and chemical exposure, ensuring long-lasting performance.
- Exact Fit for Harley-Davidson Models: Precision-designed for Sportster, Panhead, and Shovelhead engines (confirm dimensions in Cometic catalog for exact application).
- Resistant to Oil and Fuel: Built to handle harsh engine environments without degradation or leakage.
- Convenient Packaging: Sold individually or in small packs for easy storage and replacement.
Why Choose This Product
Cometic's C9448 O-Ring offers unmatched reliability for classic Harley-Davidson engines. Its advanced elastomer compound resists breakdown from heat and fuel exposure, reducing the risk of costly leaks and engine damage. Perfect for riders who demand precision and durability in their restoration or maintenance projects. Always verify exact dimensions and application specifics from the Cometic catalog or retailer listing to ensure proper installation.
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Ensure optimal engine performance and longevity with Cometic's C9448 O-Ring, designed specifically for Harley-Davidson V-twin engines. This high-quality sealing solution provides durable protection against oil, fuel, and heat exposure, keeping your classic bike running smoothly.
Key Features
- High-Quality Elastomer Material: Engineered to withstand extreme temperatures and chemical exposure, ensuring long-lasting performance.
- Exact Fit for Harley-Davidson Models: Precision-designed for Sportster, Panhead, and Shovelhead engines (confirm dimensions in Cometic catalog for exact application).
- Resistant to Oil and Fuel: Built to handle harsh engine environments without degradation or leakage.
- Convenient Packaging: Sold individually or in small packs for easy storage and replacement.
Why Choose This Product
Cometic's C9448 O-Ring offers unmatched reliability for classic Harley-Davidson engines. Its advanced elastomer compound resists breakdown from heat and fuel exposure, reducing the risk of costly leaks and engine damage. Perfect for riders who demand precision and durability in their restoration or maintenance projects. Always verify exact dimensions and application specifics from the Cometic catalog or retailer listing to ensure proper installation.| SKU | GM7FB72CAE |
|---|---|
| MPN | C9448 |
| Brand | Cometic |
| Category | Gaskets/Seals |
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| Make | Model | Years |
|---|---|---|
| Harley-Davidson | Sportster / Panhead / Shovelhead family | All Years |
Frequently Asked Questions
The description indicates use on Harley-Davidson Sportster, Panhead, and Shovelhead engines, but the exact years and engine locations vary. Always cross-reference Cometic C9448 with Cometic’s official catalog or a retailer fitment table for your exact year, model, and engine before ordering.
Cometic sells many O-rings both individually and as components in full gasket kits. C9448 appears as a stand‑alone part number, but the exact quantity per package must be confirmed on the product listing or directly with Cometic.
In most engine applications, O-rings are designed to seal without additional RTV or sealant. Typically you only clean the surfaces and lightly lubricate the O-ring with clean oil. Use sealant only if the factory service manual specifically calls for it for that joint.
Reusing O-rings on critical engine sealing points is not recommended. Heat, age, and compression set can reduce sealing effectiveness. For best reliability and to avoid leaks, install a new Cometic C9448 each time that joint is opened.
Cometic designs its engine O-rings to be compatible with typical modern engine oils and fuels used in Harley-Davidson V-twins. However, if your application involves non-standard fluids or race fuels, confirm chemical compatibility with Cometic or a knowledgeable dealer.
Installation Guide
Difficulty
Easy
Est. Time
10 min
Tools Required
- Basic hand tools appropriate to the component the O-ring seals (e.g., Allen/hex keys, sockets, or wrenches)
- Clean shop towels or lint-free rags
- Non-chlorinated parts cleaner or brake cleaner (for cleaning sealing surfaces)
- Light lubricant or clean engine oil (to lightly coat the O-ring during installation)
Pro Tips
- Clean both mating surfaces completely and remove all old gasket material, sealant, and debris before fitting the new O-ring.
- Lightly coat the new O-ring with clean engine oil (or the fluid it will be sealing) so it seats smoothly and is less likely to twist or pinch.
- Hand-start all fasteners and tighten in a crisscross or even pattern to ensure even compression on the O-ring.
- Inspect the sealing groove and mating surface for scratches, pitting, or burrs; repair or replace damaged components to prevent leaks.
- After installation, run the engine to operating temperature and then inspect carefully for any seepage or drips around the sealed area.
Common Mistakes to Avoid
- Re-using a flattened, cracked, or hardened old O-ring instead of replacing it
- Installing the O-ring dry, which can cause pinching or rolling during assembly
- Trapping dirt, old gasket material, or sealant under the new O-ring
- Over-tightening fasteners on the mating component, which can deform or cut the O-ring
- Using harsh picks or sharp tools that nick or slice the new O-ring during removal/installation
Comparison vs Stock/OEM
Functionally similar to OEM O-rings, with Cometic’s emphasis on quality and consistency for performance and rebuild applications.
Improvements
- Aftermarket availability and clear part numbering simplify sourcing during rebuilds.
- Often included in matched gasket sets to ensure all seals are refreshed together.
- Cometic is widely trusted in performance and racing circles, which can provide confidence compared to generic aftermarket seals.
Considerations
- Always verify that the Cometic C9448 directly supersedes your OEM part number for the intended location.
- If your engine has been modified (aftermarket covers, custom machining), confirm dimensionally that this O-ring still matches the groove and sealing surface.
Durability & Warranty
Expected Lifespan
Comparable to OEM engine O-rings when installed correctly and used with appropriate fluids; typically many years of normal street use.
Warranty
Cometic generally warranties products against manufacturing defects; exact terms and claim procedures should be confirmed with Cometic or the retailer.
Maintenance
No ongoing maintenance beyond periodic inspection for leaks during routine service; replace if any seepage, cracking, flattening, or hardening is observed.
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