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Start ShoppingCometic C9290 High-Temperature Intake/Exhaust Gasket – Durable Engine Sealing Solution
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Description
Ensure optimal engine performance with Cometic's C9290 intake/exhaust gasket, engineered for high-temperature durability and leak-proof sealing in powersports applications.
Key Features
- Multi-Layer Composite Construction: Combines fiber and metal fire ring for exceptional heat resistance and sealing integrity.
- Single-Use Design: Recommended for replacement whenever the manifold is removed to maintain performance standards.
- High-Temperature Resistance: Built to withstand extreme engine heat without warping or degradation.
- Universal Compatibility: Fits various powersports engines requiring intake/exhaust sealing solutions.
Why Choose This Product
Cometic's C9290 gasket delivers unmatched durability and reliability for powersports enthusiasts. Its advanced material composition ensures long-lasting performance in high-heat environments, while the single-use design prevents compression leaks and engine damage. Trusted by mechanics and riders alike, this gasket provides peace of mind with every installation.
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Ensure optimal engine performance with Cometic's C9290 intake/exhaust gasket, engineered for high-temperature durability and leak-proof sealing in powersports applications.
Key Features
- Multi-Layer Composite Construction: Combines fiber and metal fire ring for exceptional heat resistance and sealing integrity.
- Single-Use Design: Recommended for replacement whenever the manifold is removed to maintain performance standards.
- High-Temperature Resistance: Built to withstand extreme engine heat without warping or degradation.
- Universal Compatibility: Fits various powersports engines requiring intake/exhaust sealing solutions.
Why Choose This Product
Cometic's C9290 gasket delivers unmatched durability and reliability for powersports enthusiasts. Its advanced material composition ensures long-lasting performance in high-heat environments, while the single-use design prevents compression leaks and engine damage. Trusted by mechanics and riders alike, this gasket provides peace of mind with every installation.
| SKU | GMC12B6756 |
|---|---|
| MPN | C9290 |
| Brand | Cometic |
| Category | Gaskets/Seals |
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Frequently Asked Questions
In most applications, Cometic intake/exhaust gaskets are designed to be installed dry on clean, flat surfaces. Follow your service manual and Cometic’s guidance; adding RTV where it’s not specified can interfere with proper sealing.
Re‑use is not recommended. Intake and exhaust gaskets are typically single‑use items; once compressed and heat‑cycled, they may not reseal reliably. For best results, replace the gasket every time the mating surface is disturbed.
Cometic gaskets are generally considered high quality aftermarket replacements and often match or exceed OEM sealing performance and temperature resistance, but the exact advantage versus OEM depends on the specific vehicle and OEM material used.
Usually you only need to remove the section of the exhaust or intake manifold that interfaces with the gasket. On many motorcycles and ATVs that means loosening/removing the header flange bolts and any mid‑pipe mounts to gain enough clearance.
Common signs are ticking noises at the exhaust port on cold start, visible soot around the flange, exhaust smell where it shouldn’t be, poor idle or popping on decel, or in the case of intake leaks, hanging idle and lean running symptoms.
Installation Guide
Difficulty
Easy
Est. Time
20 min
Tools Required
- basic metric or SAE socket set (depending on vehicle)
- ratchet and extensions
- torque wrench (recommended)
- scraper or plastic razor blade for old gasket removal
- brake cleaner or contact cleaner and shop towels
Pro Tips
- Clean both mating surfaces thoroughly, removing all old gasket material and carbon deposits before installing the new gasket.
- Dry‑fit the gasket and manifold first to verify orientation and alignment of ports and bolt holes.
- Use a calibrated torque wrench and follow the factory service manual torque spec and tightening sequence (usually from center outward in a criss‑cross pattern).
- If exhaust hardware is rusty, pre‑soak with penetrating oil and allow time to work to avoid snapped studs.
- After the first heat cycle, re‑check torque on accessible fasteners as some settling can occur.
Common Mistakes to Avoid
- Reusing old intake/exhaust gasket instead of replacing it
- Not fully cleaning old gasket material from mating surfaces, leading to leaks
- Over‑torquing or unevenly torquing manifold bolts, which can warp the flange or crush the gasket
- Using RTV or sealant where the gasket is designed to be installed dry (can cause squeeze‑out and improper sealing)
- Cross‑threading or stripping exhaust studs/bolts
Comparison vs Stock/OEM
Cometic is a well‑regarded performance gasket manufacturer; their intake/exhaust gaskets generally equal or exceed OEM quality with consistent thickness and material, providing reliable sealing for high‑heat and high‑vibration engines.
Improvements
- High‑quality materials engineered for motorsports applications
- Good resistance to heat cycling and vibration
- Consistent thickness and port alignment for proper sealing
Considerations
- Must match the exact OEM part number/application; using the wrong pattern or thickness can cause leaks or port misalignment.
- Not typically a performance‑increasing part by itself; its benefit is reliability and reduced chance of leaks compared to worn or low‑grade gaskets.
Durability & Warranty
Expected Lifespan
Designed to last the normal service life of the intake/exhaust assembly when installed correctly; often many seasons of normal use unless removed or subjected to abnormal heat or misalignment.
Warranty
Cometic generally offers a limited warranty against defects in materials and workmanship; check with your distributor or Cometic’s official policy for specific terms.
Maintenance
No ongoing maintenance is needed for the gasket itself; inspect for exhaust soot, noise, or intake leak symptoms during routine service, and replace the gasket any time the manifold is removed.
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