COMETIC C9114 Twin Cam EST MLS Head Gasket Kit - High-Performance Gaskets for Twin Cam Engines

Description

Upgrade your Twin Cam EST engine's reliability with Cometic's C9114 MLS head gasket kit. Engineered for high-performance applications, this comprehensive gasket set ensures flawless sealing, prevents compression leaks, and extends engine life for riders demanding precision and durability.

Key Features

  • Multi-Layer Steel (MLS) Head Gasket: Superior heat resistance and sealing integrity for high-output engines.
  • Graphite Base Gasket: Ensures smooth sealing surfaces and prevents warping under extreme temperatures.
  • Brass Embossed Gaskets: Enhanced durability and precision fit for critical sealing applications.
  • 4.000" Bore Compatibility: Perfectly sized for Twin Cam EST engines with 4.000" bore specifications.
  • 0.040" Compressed Thickness: Optimized sealing pressure for reliable performance under high compression.
  • Complete Top-End Kit: Includes cylinder head, base, exhaust, intake, and valve cover gaskets for full engine coverage.

Why Choose This Product

Cometic's C9114 kit is the trusted choice for riders seeking unmatched sealing reliability. The MLS design withstands high temperatures and pressures, while the combination of graphite and brass materials ensures long-term durability. This comprehensive set eliminates the need for multiple purchases, saving time and effort during engine rebuilds. Perfect for performance enthusiasts and professional mechanics, this kit guarantees a leak-free, high-performance engine that meets the demands of aggressive riding and racing applications.
SKU: GM0D6E879C
MPN: C9114
Category: Gaskets/Seals
Brand: Cometic
Stock: In Stock
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Upgrade your Twin Cam EST engine's reliability with Cometic's C9114 MLS head gasket kit. Engineered for high-performance applications, this comprehensive gasket set ensures flawless sealing, prevents compression leaks, and extends engine life for riders demanding precision and durability.

Key Features

  • Multi-Layer Steel (MLS) Head Gasket: Superior heat resistance and sealing integrity for high-output engines.
  • Graphite Base Gasket: Ensures smooth sealing surfaces and prevents warping under extreme temperatures.
  • Brass Embossed Gaskets: Enhanced durability and precision fit for critical sealing applications.
  • 4.000" Bore Compatibility: Perfectly sized for Twin Cam EST engines with 4.000" bore specifications.
  • 0.040" Compressed Thickness: Optimized sealing pressure for reliable performance under high compression.
  • Complete Top-End Kit: Includes cylinder head, base, exhaust, intake, and valve cover gaskets for full engine coverage.

Why Choose This Product

Cometic's C9114 kit is the trusted choice for riders seeking unmatched sealing reliability. The MLS design withstands high temperatures and pressures, while the combination of graphite and brass materials ensures long-term durability. This comprehensive set eliminates the need for multiple purchases, saving time and effort during engine rebuilds. Perfect for performance enthusiasts and professional mechanics, this kit guarantees a leak-free, high-performance engine that meets the demands of aggressive riding and racing applications.
SKU GM0D6E879C
MPN C9114
Brand Cometic
Category Gaskets/Seals
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Reviews

Make Model Years
Harley-Davidson Twin Cam 96/103 (various models including Softail, Dyna, Touring) 2007-2017
Harley-Davidson FLH/FLT Touring 2007-2017
Harley-Davidson FXD Dyna 2007-2017
Harley-Davidson Softail (FLS, FXS, etc.) 2007-2017

Frequently Asked Questions

Yes, C9114 fits 2007-2017 Twin Cam 96/103 models at stock 4.000" bore. Confirm your exact model.

Designed for stock 4.000" bore; Cometic offers oversized kits for big bore applications.

EST features rubber-coated steel for better sealing on imperfect surfaces common in Harley top ends.

No, 0.040" thickness is for stock compression; adjust for custom builds.

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; use Cometic assembly lube on head gasket; torque in stages following Harley sequence

Common Mistakes to Avoid

  • Not cleaning surfaces thoroughly
  • Incorrect torque sequence
  • Over-compressing MLS gaskets

Comparison vs Stock/OEM

MLS construction vs. OEM composite; superior sealing under high heat/pressure

Improvements

  • Better heat resistance
  • Improved durability
  • Eliminates common Harley top end leaks

Considerations

  • Higher cost; requires precise torque specs

Durability & Warranty

Expected Lifespan Engine rebuild lifespan (100,000+ miles with proper install)
Warranty 1 year Cometic manufacturer defect warranty
Maintenance Inspect during valve adjustments; no specific maintenance needed

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