Cometic C5333-038 GM Gen V/VI Big Block MLS Head Gasket Bore - V8 4.540

The Cometic C5333-038 is a Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for GM Generation V and Generation VI Big Block V8 engines. This precision gasket features a 4.540-inch bore diameter and a compressed thickness of .038 inches, providing an optimal seal for high-performance and racing applications.

Key Features:

• Multi-Layer Steel construction with multiple layers of stainless steel for superior strength and durability
• 4.540-inch bore diameter accommodates standard and slightly overbored cylinders
• .038-inch compressed thickness allows for precise compression ratio tuning
• Embossed sealing beads around combustion chambers, coolant passages, and oil return holes
• Viton rubber coating on outer layers provides enhanced sealing and resistance to fluids
• Designed to withstand extreme cylinder pressures in boosted and naturally aspirated applications
• Compatible with GM Mark IV, Mark V, and Mark VI Big Block engines

Cometic MLS gaskets are the preferred choice for engine builders and racers who demand reliable sealing under extreme conditions. The multi-layer design allows the gasket to conform to imperfect sealing surfaces while maintaining structural integrity, making it ideal for aluminum heads on iron blocks or aluminum-to-aluminum applications.