Cometic C5433-051 MLS Cylinder Head Gasket Chevy Big Block Bore - for V8 4.570

The Cometic C5433-051 is a high-performance Multi-Layer Steel (MLS) cylinder head gasket engineered for Chevrolet Mark-IV and GM Gen-V/VI Big Block V8 engines. Featuring a 4.570-inch bore diameter and .051-inch compressed thickness, this gasket delivers exceptional sealing performance for high-compression and forced induction applications.

Key Features:

• Multi-Layer Steel construction provides superior conformability and torque retention
• 4.570-inch bore diameter accommodates performance builds
• .051-inch compressed thickness allows for precise compression ratio tuning
• Undersized water ports designed for aftermarket cylinder heads, allowing custom port matching
• Compatible with Chevrolet Mark-IV, GM Gen-V, and Gen-VI Big Block V8 engines
• Ideal for street performance, racing, and custom engine builds

Cometic's MLS gasket technology uses multiple layers of stainless steel with specialized coatings to create a superior seal that withstands extreme cylinder pressures and temperatures. The undersized water ports provide flexibility for custom machining to match your specific aftermarket heads, ensuring optimal coolant flow and sealing.