Cometic C9690 Head Gasket Big Bore 3-5/8" .030" Thickness

The Cometic C9690 is a high-performance Multi-Layer Steel (MLS) head gasket designed for big bore engine applications with a 3-5/8" (3.625") bore diameter and .030" compressed thickness. Cometic gaskets are engineered using advanced materials and manufacturing processes to provide superior sealing performance in high-performance and racing applications.

Key Features:

• Big bore design with 3-5/8" bore diameter for stroker and performance builds
• .030" compressed thickness for precise compression ratio tuning
• Multi-Layer Steel construction provides excellent durability and reusability
• Engineered to withstand extreme cylinder pressures and temperatures
• Superior torque retention and combustion sealing compared to traditional composite gaskets
• Ideal for turbocharged, supercharged, and high-compression naturally aspirated engines

Cometic MLS head gaskets feature multiple layers of stainless steel with a Viton rubber coating that allows the gasket to conform to imperfections in the sealing surfaces. This design provides maximum sealing capability while maintaining the structural integrity needed for high-performance applications. The precision-machined construction ensures consistent thickness and proper compression characteristics.