Specifications
- Brand
- Cometic Gasket
- Part #
- C9146
- UPC
- 191070012977

Cometic Harley-Davidson 03-Up Twin Cam Std Bore T/E w/ New Hat Valve Seal
$153.44
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Cometic Gasket Top End EST Gasket Kit for Harley-Davidson Twin Cam engines. Made in USA with no additional sealer needed.
Key Features
- Fits 2003 and later Harley-Davidson Twin Cam models.
- Top End EST Gasket Kit with a 3.750-inch bore.
- Includes hat-style valve seals.
- No additional sealer is needed for installation.
- Gaskets are proudly made in the USA.
- Designed to handle high cylinder pressures and extreme temperatures.
⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more
Product Details
Cometic Gasket is known for making gaskets for a wide range of powersports applications, including Harley-Davidson V-Twin engines. This Top End EST Gasket Kit is designed for 2003 and later Twin Cam models with a standard 3.750-inch bore. It includes the necessary gaskets and seals to rebuild the top end of your engine, ensuring a proper seal under demanding conditions.
These gaskets are proudly made in the USA using materials manufactured domestically. They are designed to handle the increased horsepower, higher cylinder pressures, and extreme temperatures common in modern, high-performance engines. A notable feature is that no additional sealer is needed, simplifying the installation process. The kit includes a hat-style valve seal for added reliability.
This kit fits a wide variety of Harley-Davidson models, including popular bikes like the Road King, Electra Glide, Street Glide, and Fat Boy. If you're working on the top end of your Twin Cam Harley-Davidson, this Cometic gasket kit offers a well-built solution.
Specifications
- Brand
- Cometic Gasket
- Manufacturer Part #
- C9146
- UPC
- 191070012977
Frequently Asked Questions
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Cometic Harley-Davidson 03-Up Twin Cam Std Bore T/E w/ New Hat Valve Seal



