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Start ShoppingCOMETIC C9146 Twin Cam EST Gasket Kit - MLS Head Gaskets for High-Performance Engines
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Description
Upgrade your Twin Cam EST engine's reliability with Cometic's C9146 gasket kit, engineered for maximum performance and long-term durability. This premium solution ensures perfect sealing and optimal engine efficiency for riders demanding top-tier power and reliability.
Key Features
- Multi-Layer Steel (MLS) Head Gaskets: Provide superior sealing and heat resistance for high-performance engines.
- One-Piece Steel Cylinder Base Gasket: Ensures precise alignment and long-lasting durability under extreme conditions.
- Brass Head Bolt Washers: Offer corrosion resistance and even pressure distribution for secure fastening.
- 4.000" Bore Size Compatibility: Perfect fit for Twin Cam engines with standard bore dimensions.
- EST (Engine Stress Tested) Design: Built to withstand high stress and thermal cycling for enhanced engine longevity.
Why Choose This Product
Cometic's C9146 kit combines advanced materials with precision engineering to deliver unmatched sealing performance. The MLS design prevents compression leaks and coolant seepage, while the steel base gasket ensures structural integrity. Ideal for riders seeking reliable power delivery and reduced maintenance intervals. With its EST construction, this kit is engineered to handle the rigors of high-performance engines, making it a must-have for serious riders.
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Upgrade your Twin Cam EST engine's reliability with Cometic's C9146 gasket kit, engineered for maximum performance and long-term durability. This premium solution ensures perfect sealing and optimal engine efficiency for riders demanding top-tier power and reliability.
Key Features
- Multi-Layer Steel (MLS) Head Gaskets: Provide superior sealing and heat resistance for high-performance engines.
- One-Piece Steel Cylinder Base Gasket: Ensures precise alignment and long-lasting durability under extreme conditions.
- Brass Head Bolt Washers: Offer corrosion resistance and even pressure distribution for secure fastening.
- 4.000" Bore Size Compatibility: Perfect fit for Twin Cam engines with standard bore dimensions.
- EST (Engine Stress Tested) Design: Built to withstand high stress and thermal cycling for enhanced engine longevity.
Why Choose This Product
Cometic's C9146 kit combines advanced materials with precision engineering to deliver unmatched sealing performance. The MLS design prevents compression leaks and coolant seepage, while the steel base gasket ensures structural integrity. Ideal for riders seeking reliable power delivery and reduced maintenance intervals. With its EST construction, this kit is engineered to handle the rigors of high-performance engines, making it a must-have for serious riders.| SKU | GM2A52D657 |
|---|---|
| MPN | C9146 |
| UPC/GTIN | 191070012977 |
| Brand | Cometic |
| Category | Gaskets/Seals |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Harley-Davidson | Twin Cam 88/96/103/110 | 1999-2017 |
Frequently Asked Questions
Designed for 4.000 inch bore Twin Cam engines.
Suitable for both; MLS gaskets handle high compression and boost.
Yes, full EST kit includes head, base, valve cover, and intake gaskets.
No, this is specifically for Twin Cam 1999-2017.
Installation Guide
Difficulty
Medium
Est. Time
2 hr 0 min
Tools Required
- torque wrench
- socket set
- gasket scraper
- engine hoist or stand
Pro Tips
- Clean all mating surfaces meticulously
- Follow Harley torque specs exactly (typically 50-60 ft-lbs in sequence)
- Use assembly lube on bearings and seals
Common Mistakes to Avoid
- Not cleaning surfaces thoroughly
- Incorrect torque sequence
- Over-torquing head bolts
Comparison vs Stock/OEM
Multi-layer steel vs. stock composite; superior sealing under high heat/pressure
Improvements
- Better durability
- Handles higher compression/boost
- Reduced blow-by
Considerations
- Requires precise torque; more expensive than OEM
Durability & Warranty
Expected Lifespan
50,000+ miles with proper install; indefinite with maintenance
Warranty
1 year limited manufacturer warranty
Maintenance
Inspect during valve adjustments; re-torque head bolts after 500 miles
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