COMETIC Top End Gasket Kit - 68 mm - Honda C3171-EST

A quality top end gasket kit is non-negotiable if you're serious about engine reliability and peak performance. Cometic's EST gasket technology delivers superior sealing on high-boost and naturally aspirated engines by distributing combustion pressure evenly, reducing bore distortion, and maximizing piston ring seal for consistent power output. This complete kit includes everything needed for a proper top end rebuild—no guessing, no missing components.

Key Technical Features:

• 68 mm fitment (Honda-specific)
• Multi-layered steel construction
• MLS head gasket design
• Embossed stainless steel gaskets
• Proprietary Viton rubber coating
• Extreme Sealing Technology (EST)
• Even torque load distribution
• Reduced bore distortion
• Enhanced piston ring seal
• Heat dissipation across surface
• Eliminates hot spot failure
• 4-stroke engine rated
• Naturally aspirated compatible
• Forced induction rated
• Includes base gasket
• Includes head gasket
• Includes cylinder O-rings
• Includes rocker gaskets
• Complete R&R kit
• Made in USA
• MPN: C3171-EST