Cometic C5330-067 MLS Cylinder Head Gasket for Chevrolet Big Block Mark IV Bore - V8 4.540

The Cometic C5330-067 is a premium Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for Chevrolet Mark IV Big Block V8 engines with a 4.540-inch bore diameter. This gasket features a .067-inch compressed thickness, providing excellent sealing performance for high-performance and racing applications.

Key Features:

• Multi-Layer Steel (MLS) construction for superior durability and heat resistance
• .067-inch (67 thousandths) compressed thickness for precise deck height control
• 4.540-inch bore diameter optimized for big block Chevrolet applications
• Advanced coating technology ensures consistent seal under extreme cylinder pressures
• Designed to withstand high combustion temperatures and pressures in performance engines
• Eliminates the need for additional sealants when surfaces are properly prepared

Cometic MLS gaskets feature multiple layers of stainless steel with elastomeric coatings that accommodate surface imperfections while maintaining optimal sealing force. This design makes them ideal for forced induction applications, high compression builds, and engines producing elevated cylinder pressures. Proper surface preparation with a minimum 50 RA finish is recommended for optimal performance.