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Start ShoppingCOMETIC C9147 Twin Cam EST Gasket Kit - MLS Head Gasket Kit for Enhanced Sealing Technology
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Description
Upgrade your Twin Cam engine's sealing integrity with COMETIC's C9147 EST Gasket Kit. This full gasket solution combines advanced materials and Enhanced Sealing Technology to deliver unmatched durability and performance for high-output powerplants.
Key Features
- Multi-Layer Steel (MLS) Head Gaskets: Constructed from high-strength MLS materials for superior sealing under extreme temperatures and pressures.
- Permatorque Silicone Gaskets: Provides flexible sealing for oil and coolant passages while resisting degradation from engine fluids.
- Brass Ring Carrier: Ensures precise alignment and long-lasting performance in critical sealing applications.
- 0.040 in. Thickness: Standard bore thickness for easy installation and compatibility with existing engine components.
- 4.000 in. Bore Size: Precision-engineered for Twin Cam engines requiring exact fitment and performance optimization.
Why Choose This Product
Engineers and riders rely on COMETIC's EST technology to prevent leaks, reduce maintenance, and maximize engine efficiency. This comprehensive gasket kit is specifically designed for Twin Cam engines, offering reliable sealing for high-performance applications. The combination of MLS, silicone, and brass components ensures long-term durability while maintaining engine integrity under demanding conditions. Whether you're modifying your powerplant or maintaining factory specifications, this kit provides the sealing reliability needed for consistent performance and peace of mind.
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Upgrade your Twin Cam engine's sealing integrity with COMETIC's C9147 EST Gasket Kit. This full gasket solution combines advanced materials and Enhanced Sealing Technology to deliver unmatched durability and performance for high-output powerplants.
Key Features
- Multi-Layer Steel (MLS) Head Gaskets: Constructed from high-strength MLS materials for superior sealing under extreme temperatures and pressures.
- Permatorque Silicone Gaskets: Provides flexible sealing for oil and coolant passages while resisting degradation from engine fluids.
- Brass Ring Carrier: Ensures precise alignment and long-lasting performance in critical sealing applications.
- 0.040 in. Thickness: Standard bore thickness for easy installation and compatibility with existing engine components.
- 4.000 in. Bore Size: Precision-engineered for Twin Cam engines requiring exact fitment and performance optimization.
Why Choose This Product
Engineers and riders rely on COMETIC's EST technology to prevent leaks, reduce maintenance, and maximize engine efficiency. This comprehensive gasket kit is specifically designed for Twin Cam engines, offering reliable sealing for high-performance applications. The combination of MLS, silicone, and brass components ensures long-term durability while maintaining engine integrity under demanding conditions. Whether you're modifying your powerplant or maintaining factory specifications, this kit provides the sealing reliability needed for consistent performance and peace of mind.
| SKU | GM4A39ACAF |
|---|---|
| MPN | C9147 |
| Brand | Cometic |
| Category | Gaskets/Seals |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Harley-Davidson | Twin Cam 96/103 Dyna, Softail, Touring | 2007-2017 |
| Harley-Davidson | FLH, FLT, FXD, FXST | 2007-2017 |
Frequently Asked Questions
Designed for 4.000" standard bore Twin Cam engines. Available in other thicknesses/bore sizes.
Yes, complete kit includes MLS head gaskets, base gaskets, exhaust gaskets, and all necessary seals.
Yes, MLS construction handles high compression well. Verify thickness matches your build.
C9147 is for stock 4.000" bore. Cometic offers kits for 4.060", 4.125" etc.
Installation Guide
Difficulty
Medium
Est. Time
2 hr 0 min
Tools Required
- torque wrench
- socket set
- gasket scraper
- engine stand or hoist
- feeler gauges
Pro Tips
- Clean all mating surfaces meticulously
- Follow Harley torque specs exactly
- Use assembly lube on bearings
- Check piston-to-valve clearance after install
Common Mistakes to Avoid
- Not cleaning surfaces thoroughly
- Incorrect torque sequence
- Over-torquing head bolts
Comparison vs Stock/OEM
Replaces paper/composition stock gaskets with multi-layer steel construction
Improvements
- Superior sealing under high heat/pressure
- Better durability
- Handles higher compression
- Repeated reuse possible
Considerations
- Higher cost
- Requires precise installation
Durability & Warranty
Expected Lifespan
Engine rebuild lifespan (50,000+ miles with proper install)
Warranty
1 year manufacturer defect warranty
Maintenance
Inspect during valve adjustments; reusable if undamaged
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