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Start ShoppingCometic C9312 Ironhead Sportster Charging/Starting Gasket Kit - High-Performance Sealing Solution
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Description
Keep your Ironhead Sportster running smoothly with Cometic's C9312 charging/starting gasket kit. This high-performance solution delivers exceptional sealing for critical electrical systems, preventing leaks and ensuring long-term reliability for classic Harley-Davidson engines.
Key Features
- Premium Material Construction: Advanced fiber/composite and paper-style gaskets with rubber seals withstand extreme temperatures and engine vibrations.
- Precision Engineering: Engineered for perfect fitment on Ironhead Sportster models, matching original factory specifications for optimal sealing.
- Comprehensive Kit: Includes all necessary gaskets and seals for primary/charging systems, eliminating guesswork during installation.
Why Choose This Product
Upgrade your maintenance routine with Cometic's trusted gasket kit. Its durable materials resist degradation from heat and oil, while precise engineering ensures leak-free performance. Perfect for riders seeking reliable sealing solutions without compromising engine efficiency or longevity.
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Keep your Ironhead Sportster running smoothly with Cometic's C9312 charging/starting gasket kit. This high-performance solution delivers exceptional sealing for critical electrical systems, preventing leaks and ensuring long-term reliability for classic Harley-Davidson engines.
Key Features
- Premium Material Construction: Advanced fiber/composite and paper-style gaskets with rubber seals withstand extreme temperatures and engine vibrations.
- Precision Engineering: Engineered for perfect fitment on Ironhead Sportster models, matching original factory specifications for optimal sealing.
- Comprehensive Kit: Includes all necessary gaskets and seals for primary/charging systems, eliminating guesswork during installation.
Why Choose This Product
Upgrade your maintenance routine with Cometic's trusted gasket kit. Its durable materials resist degradation from heat and oil, while precise engineering ensures leak-free performance. Perfect for riders seeking reliable sealing solutions without compromising engine efficiency or longevity.| SKU | GM20041577 |
|---|---|
| MPN | C9312 |
| UPC/GTIN | 191070019495 |
| Brand | Cometic |
| Category | Gaskets/Seals |
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Frequently Asked Questions
C9312 is cataloged as an Ironhead Sportster charging/starting gasket kit. Because specific year and model coverage is not clearly published in the sources available here, you should confirm by cross-referencing Cometic’s official catalog or a retailer’s detailed fitment tool using your exact year and model before purchase.
It is a dedicated charging/starting gasket set for Ironhead Sportster primary/charging components, typically including the main primary/outer cover gasket and related small gaskets and seals. Exact piece list is not clearly listed in accessible sources, so check the kit contents description or product photo from the seller before ordering if you need specific pieces.
Most Cometic primary/cover gaskets are designed to seal dry on clean, flat, oil-free surfaces. A very light smear of non-hardening sealant is sometimes used at known problem joints, but heavy RTV use is not recommended. Follow the service manual and Cometic’s guidance.
Charging/starting and primary cover gaskets are generally considered single-use. Once compressed and exposed to heat and oil, they may not reseal reliably if reused, so plan to replace them when the cover is removed.
No. C9312 is an aftermarket Cometic Gasket kit designed to replace factory gaskets on compatible Ironhead Sportster models.
Installation Guide
Difficulty
Medium
Est. Time
1 hr 0 min
Tools Required
- basic SAE hand tools (sockets and wrenches)
- Allen/hex keys (for primary/cover fasteners, depending on year)
- torque wrench (in ft-lb and/or in-lb range)
- gasket scraper or plastic razor scraper
- parts cleaner or brake cleaner
- shop rags
- drain pan (for primary/trans fluid)
Pro Tips
- Dry-fit each gasket on the cover or case half before applying any sealant to ensure correct orientation and hole alignment
- Use only a very light, thin smear of non-hardening sealant (if at all) on problem areas; most Cometic gaskets are designed to be installed dry on clean, flat surfaces
- Chase and clean threads and use a torque wrench in a crisscross pattern to factory torque specs to prevent leaks
- After first heat cycle, inspect around covers for any weeping and re-torque fasteners if required by the service manual
Common Mistakes to Avoid
- Reusing old, damaged, or oil-soaked gaskets instead of installing all new pieces in the kit
- Over-tightening cover bolts and distorting the gasket or warping the cover
- Not cleaning old gasket material fully from mating surfaces before reassembly
- Installing a gasket backwards and partially blocking an oil passage
- Failing to check for nicks or burrs on aluminum surfaces that can cut into the new gasket
Comparison vs Stock/OEM
Cometic C9312 is an aftermarket replacement for OEM Harley-Davidson Ironhead Sportster charging/starting gaskets.
Improvements
- High-quality gasket materials designed for oil sealing and heat cycling
- Comprehensive kit approach so related gaskets are replaced together
- Generally competitive price compared to ordering multiple OEM gaskets separately
Considerations
- Exact piece shapes and thicknesses should be verified against your original parts or a fitment guide for your year and model
- Always follow OEM torque specs and procedures when installing aftermarket gaskets
Durability & Warranty
Expected Lifespan
Typical lifespan is comparable to OEM charging/primary gaskets when installed on clean, flat surfaces and torqued correctly; often many years of normal street use.
Warranty
Standard aftermarket gasket warranty from Cometic (details vary by seller; usually limited warranty against manufacturing defects).
Maintenance
No direct maintenance; visually inspect for leaks at service intervals and replace gaskets if covers are removed or any seepage develops.
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