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Start ShoppingCometic C9188 MLS Top-End Gasket Kit for Harley Panhead/Shovelhead Models – Durable, Leak-Proof Seals
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Description
Upgrade your Harley engine's sealing system with Cometic's C9188 top-end gasket kit. Designed for Panhead, Shovelhead, Evo Big Twin, and Twin Cam models, this MLS gasket delivers unmatched durability and reliability for high-performance riding.
Key Features
- Multi-Layer Steel (MLS) Construction: Reinforced steel layers with nitrile rubber coating provide superior sealing under extreme temperatures and pressures.
- 0.040 in. (1.02mm) Thickness: Optimal compression for perfect fitment and leak-free operation in vintage and modern Harley engines.
- Top-End Gasket Kit: Complete set for cylinder heads, valve covers, and oil pans – eliminates the need for multiple parts.
- 0.3 lbs Weight: Lightweight design reduces strain on engine components while maintaining structural integrity.
Why Choose This Product
Cometic's C9188 gasket kit is engineered for riders who demand precision and longevity. The MLS construction resists compression set and oil leakage, ensuring consistent performance through thousands of miles. Its compatibility with multiple Harley engine types makes it a versatile upgrade for classic and contemporary bikes. The nitrile rubber coating withstands high temperatures and fuel exposure, preventing degradation and maintaining a perfect seal. Whether you're restoring a vintage Panhead or modifying a Twin Cam, this gasket kit offers peace of mind with its durable, leak-proof design.
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Upgrade your Harley engine's sealing system with Cometic's C9188 top-end gasket kit. Designed for Panhead, Shovelhead, Evo Big Twin, and Twin Cam models, this MLS gasket delivers unmatched durability and reliability for high-performance riding.
Key Features
- Multi-Layer Steel (MLS) Construction: Reinforced steel layers with nitrile rubber coating provide superior sealing under extreme temperatures and pressures.
- 0.040 in. (1.02mm) Thickness: Optimal compression for perfect fitment and leak-free operation in vintage and modern Harley engines.
- Top-End Gasket Kit: Complete set for cylinder heads, valve covers, and oil pans – eliminates the need for multiple parts.
- 0.3 lbs Weight: Lightweight design reduces strain on engine components while maintaining structural integrity.
Why Choose This Product
Cometic's C9188 gasket kit is engineered for riders who demand precision and longevity. The MLS construction resists compression set and oil leakage, ensuring consistent performance through thousands of miles. Its compatibility with multiple Harley engine types makes it a versatile upgrade for classic and contemporary bikes. The nitrile rubber coating withstands high temperatures and fuel exposure, preventing degradation and maintaining a perfect seal. Whether you're restoring a vintage Panhead or modifying a Twin Cam, this gasket kit offers peace of mind with its durable, leak-proof design.| SKU | GM3A2F94E1 |
|---|---|
| MPN | C9188 |
| 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 Big Twin | 1999-2017 |
Frequently Asked Questions
Yes, C9188 fits 1999-2017 Twin Cam Big Twin models excluding CVO. Confirm your bore size (typically 3.875"-4.000").
Yes, includes head gaskets, base gaskets, exhaust gaskets, O-rings, and cylinder-end plugs.
C9188 is standard 0.040" thickness. The -040 suffix explicitly denotes the thickness; same kit.
Yes, MLS construction handles high compression and boosted applications well.
Yes, includes .020" base gaskets for stock deck height.
Installation Guide
Difficulty
Medium
Est. Time
1 hr 0 min
Tools Required
- torque wrench
- socket set
- gasket scraper
- engine assembly lube
Pro Tips
- Clean all surfaces with brake cleaner before install
- Follow Harley torque specs exactly
- Apply thin layer of copper gasket sealant if needed
Common Mistakes to Avoid
- Not cleaning mating surfaces thoroughly
- Incorrect torque sequence
- Over-torquing head bolts
Comparison vs Stock/OEM
Multi-layer steel vs. single-layer composite; superior sealing under high heat/pressure
Improvements
- Better heat resistance
- No burn-through
- Reusable if undamaged
- Handles higher compression ratios
Considerations
- Requires precise torque; more expensive than OEM
Durability & Warranty
Expected Lifespan
Engine rebuild lifespan (50,000+ miles with proper torque)
Warranty
1 year manufacturer defect warranty
Maintenance
Re-torque head bolts after 500 miles initial run-in; inspect during valve checks
What Others Are Saying
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