Cometic C5329-089 MLS Cylinder Head Gasket Chevy Big Block Mark IV Bore - for 4.375

The Cometic C5329-089 is a premium Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for Chevrolet Mark IV Big Block V8 engines with a 4.375-inch bore diameter. This gasket features a compressed thickness of .089 inches, providing excellent sealing performance for high-performance and race applications.

Key Features:

• Multi-Layer Steel (MLS) construction for superior durability and reusability
• .089-inch compressed thickness for precise deck height control
• 4.375-inch bore diameter designed for Chevrolet Mark IV Big Block V8 engines
• Embossed stainless steel layers with advanced coating technology
• Handles extreme cylinder pressures in boosted and naturally aspirated applications
• Accommodates thermal expansion and engine movement for reliable sealing
• Suitable for street performance, racing, and high-compression builds

Cometic MLS gaskets are the industry standard for performance engine builders, offering exceptional combustion sealing and long-term reliability. The multiple layers of stainless steel with specialized coatings create micro-sealing that adapts to imperfections in the head and block surfaces, while maintaining consistent clamping pressure across the entire gasket surface.