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Start ShoppingCOMETIC C9260 MLS Head Gasket - Durable Seal for Panhead/Shovelhead/Evo Big Twins
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Description
Upgrade your engine's reliability with the COMETIC C9260 MLS head gasket, engineered for high-performance Harley-Davidson engines. This durable solution ensures optimal sealing, preventing leaks and maintaining peak engine efficiency.
Key Features
- Multi-layer steel (MLS) construction: Durable MLS design withstands extreme heat and pressure for long-lasting performance.
- 3.437 in. (87.30 mm) bore size: Precision-engineered to fit Panhead/Shovelhead/Evo Big Twin engines perfectly.
- 0.040 in. thickness: Optimal compression and sealing without compromising engine integrity.
- Head Gasket type: Designed for high-performance applications with enhanced durability and heat resistance.
- 0.2 lbs (approx.) weight: Lightweight yet robust, ensuring easy installation and minimal strain on engine components.
Why Choose This Product
Whether you're restoring a classic or riding a modern Big Twin, the COMETIC C9260 delivers unmatched reliability. Its MLS construction prevents blowouts and maintains compression, while its precise fit ensures seamless integration with your engine's design. Trust Cometic for a gasket that combines performance, durability, and rider confidence.
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Upgrade your engine's reliability with the COMETIC C9260 MLS head gasket, engineered for high-performance Harley-Davidson engines. This durable solution ensures optimal sealing, preventing leaks and maintaining peak engine efficiency.
Key Features
- Multi-layer steel (MLS) construction: Durable MLS design withstands extreme heat and pressure for long-lasting performance.
- 3.437 in. (87.30 mm) bore size: Precision-engineered to fit Panhead/Shovelhead/Evo Big Twin engines perfectly.
- 0.040 in. thickness: Optimal compression and sealing without compromising engine integrity.
- Head Gasket type: Designed for high-performance applications with enhanced durability and heat resistance.
- 0.2 lbs (approx.) weight: Lightweight yet robust, ensuring easy installation and minimal strain on engine components.
Why Choose This Product
Whether you're restoring a classic or riding a modern Big Twin, the COMETIC C9260 delivers unmatched reliability. Its MLS construction prevents blowouts and maintains compression, while its precise fit ensures seamless integration with your engine's design. Trust Cometic for a gasket that combines performance, durability, and rider confidence.
| SKU | GMCC264D95 |
|---|---|
| MPN | C9260 |
| Brand | Cometic |
| Category | Gaskets/Seals |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Harley-Davidson | Panhead Big Twin | 1948-1984 |
| Harley-Davidson | Shovelhead Big Twin | 1966-1984 |
| Harley-Davidson | Evolution Big Twin | 1984-1999 |
Frequently Asked Questions
No, this is for Big Twin Evolution models only. Sportsters use different part numbers.
0.040 inches standard thickness.
Designed for 3.437" (87.30mm) stock bore. Cometic offers other sizes for big bore kits.
Recommended to check head and cylinder flatness (max 0.004" warpage).
Installation Guide
Difficulty
Medium
Est. Time
1 hr 0 min
Tools Required
- torque wrench
- gasket scraper
- socket set
- feel gauge
Pro Tips
- Clean head and cylinder surfaces meticulously
- Follow Harley torque specs exactly
- Use assembly lube on bolts
- Check for flatness before install
Common Mistakes to Avoid
- Not cleaning mating surfaces thoroughly
- Incorrect torque sequence
- Over-torquing bolts
Comparison vs Stock/OEM
MLS construction vs. OEM composite/paper gasket
Improvements
- Superior sealing under high compression
- Better heat resistance
- Handles higher boost/nitrous
- Reusable if undamaged
Considerations
- Requires precise torque and flat surfaces
Durability & Warranty
Expected Lifespan
Engine life if installed properly
Warranty
1 year Cometic manufacturer defect warranty
Maintenance
Inspect during top-end service; reusable if flat
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