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Start ShoppingCometic C9266F MLS Head Gasket Kit for Harley Panhead/Shovelhead Big Twins - Durable & Reliable
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Description
Upgrade your Harley engine's reliability with Cometic's premium MLS head gasket kit. Engineered for Panhead, Shovelhead, and Big Twin models, this full gasket system delivers unmatched sealing performance and durability for power sports enthusiasts.
Key Features
- Multi-Layer Steel (MLS) Construction: 3-layer design provides superior sealing under extreme heat and pressure, preventing oil leaks and coolant loss.
- Viton Coating: High-temperature resistant coating ensures long-lasting performance and compatibility with modern engine fluids.
- One-Piece Design: Simplifies installation and ensures even compression for consistent sealing across all engine surfaces.
- Full Gasket Kit: Includes all necessary components for complete engine sealing without compatibility issues.
- Model Compatibility: Specifically engineered for Harley-Davidson Panhead, Shovelhead, and Big Twin engines.
Why Choose This Product
Cometic's C9266F gasket kit offers exceptional durability and leak prevention for high-performance engines. The MLS construction handles extreme operating conditions, while the Viton coating resists degradation from engine fluids. This full kit ensures proper sealing without the risk of cross-threading or improper fit, making it a trusted choice for riders demanding reliability and performance.
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Upgrade your Harley engine's reliability with Cometic's premium MLS head gasket kit. Engineered for Panhead, Shovelhead, and Big Twin models, this full gasket system delivers unmatched sealing performance and durability for power sports enthusiasts.
Key Features
- Multi-Layer Steel (MLS) Construction: 3-layer design provides superior sealing under extreme heat and pressure, preventing oil leaks and coolant loss.
- Viton Coating: High-temperature resistant coating ensures long-lasting performance and compatibility with modern engine fluids.
- One-Piece Design: Simplifies installation and ensures even compression for consistent sealing across all engine surfaces.
- Full Gasket Kit: Includes all necessary components for complete engine sealing without compatibility issues.
- Model Compatibility: Specifically engineered for Harley-Davidson Panhead, Shovelhead, and Big Twin engines.
Why Choose This Product
Cometic's C9266F gasket kit offers exceptional durability and leak prevention for high-performance engines. The MLS construction handles extreme operating conditions, while the Viton coating resists degradation from engine fluids. This full kit ensures proper sealing without the risk of cross-threading or improper fit, making it a trusted choice for riders demanding reliability and performance.| SKU | GM4233616D |
|---|---|
| MPN | C9266F |
| 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 |
| Harley-Davidson | Twin Cam 88 | 1999-2006 |
Frequently Asked Questions
Yes, C9266F MLS gaskets handle up to 12.5:1 compression ratios safely.
Recommended to use ARP head studs/bolts. Stock bolts can be reused if in good condition and torqued properly.
Yes, includes head gaskets, base gaskets, exhaust gaskets, rocker box gaskets, and O-rings.
0.040" is standard replacement thickness. 0.030" for builds needing more compression.
Absolutely, excellent upgrade over stock paper gaskets for any rebuild.
Installation Guide
Difficulty
Medium
Est. Time
2 hr 0 min
Tools Required
- Torque wrench
- Socket set (3/8" drive)
- Cylinder base torque wrench
- Gasket scraper
- Torque specs chart for specific model
- Engine stand (recommended)
Pro Tips
- Clean all surfaces with brake cleaner, no residue
- Follow Harley torque specs exactly
- Use ARP head studs for best results
- Apply light oil to cylinder studs
- Check for flatness with straightedge before install
Common Mistakes to Avoid
- Not cleaning surfaces completely
- Incorrect torque sequence
- Over-torquing MLS gaskets
- Reusing old head bolts
Comparison vs Stock/OEM
Multi-layer steel vs single-layer paper/composite
Improvements
- 100% better sealing reliability
- Handles higher cylinder pressures
- Re-usable multiple times
- Resists head lift and blowout
Considerations
- Higher cost
- Requires precise torque procedure
Durability & Warranty
Expected Lifespan
Rebuild to rebuild (20,000+ miles)
Warranty
1 year manufacturer defect warranty
Maintenance
Inspect during every major service, reusable if flat
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