Cometic C9951-018 HD '99-UP "EST" 1550 BIG BORE T/C .018" H/G TOP END

The Cometic C9951-018 is a high-performance head gasket designed for 1999 and newer Harley-Davidson Twin Cam engines with 1550cc big bore cylinders. This premium gasket features Cometic's Extreme Sealing Technology (EST) with an .018" compressed thickness, engineered to handle the demands of high-performance and modified engines.

Key Features:

• Multi-Layer Steel (MLS) construction with proprietary EST coating for superior sealing
• .018" compressed thickness provides optimal compression ratio for big bore applications
• Designed specifically for 1550cc big bore cylinder kits on Twin Cam engines
• Handles extreme cylinder pressures and temperatures in performance applications
• Precision-machined to OEM specifications with enhanced sealing properties
• Eliminates the need for additional sealants or retorquing

Cometic gaskets are manufactured in the USA using advanced materials and processes trusted by professional engine builders and racers worldwide. This top-end gasket is an essential component when rebuilding or upgrading your Harley-Davidson Twin Cam engine with big bore cylinders.