Cometic C5330-089 MLS Cylinder Head Gasket for Chevrolet Big Block Mark IV Bore - V8 4.540

The Cometic C5330-089 is a high-performance Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for Chevrolet Mark IV Big Block V8 engines. This precision gasket features a 4.540-inch bore diameter and a compressed thickness of .089 inches, providing optimal sealing for high-performance and racing applications.

Key Features:

• Multi-Layer Steel (MLS) construction for superior durability and reusability
• 4.540-inch bore diameter accommodates standard and slightly overbored Mark IV applications
• .089-inch compressed thickness allows for precise compression ratio tuning
• Stainless steel core with FKM (Viton) rubber sealing layers
• Exceptional resistance to heat, pressure, and combustion gases
• Accommodates block and head movement in high-output engines
• Sold individually (order quantity needed for complete engine)

Cometic MLS gaskets are a top choice for engine builders working with turbocharged, supercharged, and naturally aspirated performance engines. The multi-layer design with elastomeric coating provides consistent sealing even as engine components expand and contract during operation, while the stainless steel core prevents gasket failure under extreme cylinder pressures.