Cometic C9238-030 Twin Cam Top End Gasket Kit Bore Head Gasket - 4.250 030

The Cometic C9238-030 is a complete top end gasket kit designed for 1999 and newer Harley-Davidson Twin Cam engines with a 4.250" bore size. This heavy-duty EST (Extreme Sealing Technology) kit includes a .030" thick Multi-Layer Steel (MLS) head gasket and .020" base gasket with Teflon coating for exceptional sealing performance.

Key Features:

• Multi-Layer Steel head gasket construction with .030" thickness for superior sealing and durability
• Base gasket features .020" thickness with Teflon coating to prevent oil leaks
• Designed for 4.250" cylinder bore (approximately 103-107 cubic inch engines)
• EST (Extreme Sealing Technology) provides enhanced compression sealing under high-performance conditions
• Complete top end kit includes all necessary gaskets for head and base installation
• Precision-manufactured to OEM specifications for exact fit and reliable performance

Cometic gaskets are engineered for both stock and high-performance applications, making this kit ideal for engine rebuilds, big bore conversions, or performance upgrades on Twin Cam motors. The MLS head gasket design allows for minor surface imperfections while maintaining a superior seal, and the Teflon-coated base gasket ensures long-lasting reliability.