Cometic C9951-040 HD Big Bore Top End Gasket Kit MLS Head Gasket - 1550cc 040

The Cometic C9951-040 is a premium heavy-duty top end gasket kit designed for 1999 and newer Harley-Davidson Twin Cam engines with 1550cc big bore cylinders. This comprehensive kit features Cometic's renowned Multi-Layer Steel (MLS) head gaskets with a .040" compressed thickness, engineered to handle the increased cylinder pressures of big bore applications.

Key Features:

• Multi-Layer Steel (MLS) head gasket construction for superior sealing and durability
• .040" compressed gasket thickness for precise deck height control
• Designed specifically for 1550cc (95ci) big bore cylinder kits
• Fits 1999 and newer Harley-Davidson Twin Cam engines
• Complete top end gasket set includes all necessary gaskets and seals
• Exceeds OEM specifications for high-performance and modified engines
• Made in USA with premium materials and precision manufacturing

Cometic gaskets utilize advanced MLS technology with multiple layers of stainless steel and elastomeric coatings to provide maximum sealing under extreme conditions. This gasket kit is essential for engine rebuilds, big bore conversions, and performance upgrades where reliability and precision are critical.