Cometic C5333-066 GM Gen V/VI Big Block MLS Cylinder Head Gasket Bore - V8 4.540

The Cometic C5333-066 is a high-performance Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for GM Generation V and VI Big Block V8 engines. This precision gasket features a 4.540-inch bore diameter and .066-inch compressed thickness, designed to provide superior sealing performance in demanding applications.

Key Features:

• Multi-Layer Steel (MLS) construction for maximum durability and reliability
• 4.540-inch bore diameter for proper cylinder sealing
• .066-inch (1.68mm) compressed thickness
• Engineered for GM Gen V/VI Big Block V8 engines
• Embossed stainless steel outer layers with steel inner layer
• Superior rebound characteristics maintain consistent seal pressure
• Handles extreme cylinder pressures in high-performance and racing applications

Cometic MLS gaskets utilize multiple layers of stainless steel with special coatings to accommodate engine movement and thermal expansion while maintaining an optimal seal. The embossed design ensures proper load distribution around combustion chambers, oil passages, and coolant ports. This gasket is ideal for performance builds, boosted applications, and engine rebuilds requiring precise compression control.